LBZ Glow plug recall. Please read before posting [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: LBZ Glow plug recall. Please read before posting

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Max Payne

03-28-2006, 10:12 AM

OK Guys, this is the official LBZ Glow Plug Recall. Please read this before starting any new threads about LBZ Glow Plugs. There are many, many threads already posted concerning glow plugs. Please use the search feature to locate information, rather than cluttering up the forum with redundant questions and concerns. Thanks, The Staff:)

Subject: Product Emission-Engine Glow Plug System Concern-Reprogram Glow Plug Control Module #06522 - (03/24/2006)

Models: 2006 CHEVROLET SILVERADO, EXPRESS, KODIAK

2006 GMC SIERRA, SAVANA, TOPKICK

EQUIPPED WITH 6.6L V8 (RPO LLY (http://www.dieselplace.com/forum/autolink.php?id=21&script=showthread&forumid=140)

--------------------------------------------------------------------------------

Condition
Certain 2006 Chevrolet Silverado, Express, Kodiak; and 2006 GMC Sierra, Savana, Topkick model trucks equipped with a 6.6L V8 (RPO LLY (http://www.dieselplace.com/forum/autolink.php?id=21&script=showthread&forumid=140) - VIN 2 or RPO LBZ (http://www.dieselplace.com/forum/autolink.php?id=22&script=showthread&forumid=140) - VIN D) Duramax Diesel engine, may have a condition in which the engine glow plugs are overstressed electronically, causing glow plug failure and engine damage in some cases.

Correction
Dealers are to reprogram the Glow Plug Control Module (GPCM).

Vehicles Involved
Involved are certain 2006 Chevrolet Silverado, Express, Kodiak; and 2006 GMC Sierra, Savana, Topkick model trucks equipped with a 6.6L V8 (RPO LLY (http://www.dieselplace.com/forum/autolink.php?id=21&script=showthread&forumid=140) - VIN 2 or RPO LBZ (http://www.dieselplace.com/forum/autolink.php?id=22&script=showthread&forumid=140) - VIN D) Duramax Diesel engine and built within these VIN breakpoints:

Year
Division
Model
From
Through

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

2006
Chevrolet
Express
61100002
61221358

2006
Chevrolet
Kodiak
6F400002
6F422129

2006
GMC
Sierra
6E100003
6E232523

6F100002
6F216758

2006
GMC
Savana
61100022
61221125

2006
GMC
TopKick
6F400010
6F904910

Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the system below. Not all vehicles within the above breakpoints may be involved.

-- GM dealers should use GMVIS.

For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided through the applicable system listed below. Dealers will not have a report available if they have no involved vehicles currently assigned.

-- US GM - GM DealerWorld Recall Information

-- Canadian GM - GMinfoNet Recall Reports

-- Export dealers - sent directly to dealers

The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this recall.

Parts Information
Do not attempt to order the calibration number from GMSPO. The calibration numbers are programmed into Control Modules via a Techline Tech 2 scan tool and the Techline Information System (TIS) 2000 terminal with the calibration update. Use data version 3.5 for 2006 or later, broadcast to dealers, and available on TIS2WEB, March 19, 2006 (US), March 22, 2006 (Canada); and on TIS CD-ROM version 4.0 / 2006, which will be mailed to dealers by April 18, 2006. To complete this service procedure, the Tech 2® must also be updated to release 26.002 or greater. If you cannot access the calibration, call the Techline Customer Support Center at 1-800-828-6860 (English) or 1-800-503-3222 (French) and it will be provided.

Service Procedure
Glow Plug Control Module Reprogramming

Notice: Before reprogramming, please check the battery condition to prevent a reprogram error of the Glow Plug Control Module due to battery discharge. If the vehicle battery is not fully charged, ensure that it is fully charged prior to performing the reprogramming procedure.

The ignition switch must be in the proper position. The Tech 2 prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the programming procedure, unless instructed to do so.

Make certain all tool connections are secure, including the following components and circuits:

• The RS-232 communication cable port

• The connection at the data link connector (DLC)

• The voltage supply circuits

DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections are secure and the TIS terminal operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.

Tech 2 Remote Programming
Use the normal "request method" through "Service Programming System" to request information from the vehicle.
At the Techline Terminal enter TIS SPS programming system.
Select Tech 2 from the "Select Diagnostic Tool" window.
Select Reprogram ECU from the "Select Programming Process" window.
Select Vehicle from the "Select ECU Location" window.
Select Next to go to the "Preparing for Communication" instruction Screen.
Select Next to view the "Validate Vehicle ID Number" screen. If the Vehicle ID Number does not appear on the screen, manually insert the VIN into the VIN window of the "Validate Vehicle ID Number" screen.
Select Next to view the "Supported Controllers" screen.
Select Glow Plug Control Module from "Supported Controllers" window.
Select Next to view the "Select Programming Type" window.
Select Normal from the "Select Programming Type" window.
Select Next to view the "Service Programming System Calibration Selection" screen.
Select Next to view "Summary" screen.
Verify that current and selected calibration information is displayed on the "Summary" screen.
Select Next to download the calibration to the Tech 2.
Back at the vehicle enter "Service Programming Systems".
Select "Program ECU" and follow on screen instructions.
Make sure to turn OFF the ignition for 30 seconds after the "Programming is Complete". Clear diagnostic trouble codes (http://www.dieselplace.com/forum/autolink.php?id=37&script=showthread&forumid=140) (DTCs), if required.
CALIFORNIA, MASSACHUSETTS, MAINE, & VERMONT VEHICLES ONLY: Install a Recall Identification Label. Also, for California vehicles complete a "Proof of Correction

Max Payne

03-28-2006, 10:22 AM

All recent glow plug related threads have been merged into one: http://dieselplace.com/forum/showthread.php?t=73488

Again, thanks for keeping things organized.

TTA89

03-28-2006, 02:19 PM

I don't understand the VIN range for the Silverado.

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

What does that mean? The first set overlaps the second set.

And just for reference mine was built 01/06 and is 6E211543. So it looks as if all of us are going to have this done.

RayMich

03-28-2006, 02:27 PM

I don't understand the VIN range for the Silverado.

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

What does that mean? The first set overlaps the second set.The first set of VINs with the "E" is for trucks built at the Pontiac assembly plant. These are the Extended Cab trucks.

The second set with the "F" is for trucks built at the Flint Assembly plant. These are the Crew Cab trucks.

Duramaxed06

03-28-2006, 08:18 PM

Got mine reflashed today, took about 30 min.

TACOTOWER

03-28-2006, 09:41 PM

I also drove into the dealer this morning with all the recall info and asked for the re-flash and much to my surprise they re-flased my truck in 30 min.
I have had 5k problem free miles and hope for many many more. Thanks to this board for alerting me to this recall:ro)

MKAH

03-28-2006, 10:49 PM

file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/moz-screenshot.jpgfile:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/moz-screenshot-1.jpgfile:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/moz-screenshot-2.jpgMax Payne,

I stopped at the dealer this afternoon and they did not know anything about the recall. Should I wait for a letter from GM or go back down to the dealership and ask for the update again.

Thanks

torozmaster

03-28-2006, 11:25 PM

Take the TSB number and call them up. If the service advisors do not know, ask for the shop foreman. They have the TSBs generally. MyGMLink sent me an email saying there is an open recall for my truck. So GM knows, just have to find the tech who does. IF still no one knows, then print off the instructions from the top of the page. Take it in and they should be smart enough to figure it out from that.

MKAH

03-29-2006, 12:04 AM

Cool, thanks for the advise, I will do that ASAP.

Glamisboy

03-29-2006, 01:03 AM

Had mine done today. Called them yesterday about the recall, they had no knowledge but were eager to find out. Called me back & made arrangements to have it done today. Not sure how long it took because they had the stupid truck over half a day!! Anyway it's done.

I was concerned because my Check engine light popped up last week. They said it was due to the glow plug issue, but no further details. So I'm a little concerned, but the truck has always ran fine. So I guess we'll see.

Thanks guys :thumb:

RichLockyer

03-29-2006, 01:46 AM

I was concerned because my Check engine light popped up last week. They said it was due to the glow plug issue, but no further details.
There are two types of GP failure... "slow open" and "fast open"
In "fast open", the plug fails internally but remains intact. In "slow open" the plug tip actually falls off.

If you had a "fast open", then your engine is safe. If you just got a light with no knocking or any other symptoms, it's probably fine.

Carmine LBZ

03-29-2006, 10:23 AM

There are two types of GP failure... "slow open" and "fast open"
In "fast open", the plug fails internally but remains intact. In "slow open" the plug tip actually falls off.

If you had a "fast open", then your engine is safe. If you just got a light with no knocking or any other symptoms, it's probably fine.

That's a great point that you brought up, Rich. So far, almost everyone who has had a glow plug problem seems to have had the "slow open" variety. The notion that a glow plug could go bad without causing havoc to the engine has been pretty much overlooked.

We seem to have some encouraging news, though, about the GPCM needing re-programming on trucks that fall into a certain VIN span. Maybe at long last this problem will go away...Carmine

hdbeast

03-29-2006, 10:49 AM

Called my dealer this morning, they had not heard about recall yet.
However within 2 minutes he found it and scheduled my truck for tomorrow morning. Looking forward to having that headache taken care of. I've had no problems, other than crappy fuel mileage, but always held my breath when starting the truck.

original_tsp

03-29-2006, 10:58 AM

is it just me or does the tsb as it reads mean that not everyone in that range of vin #'s will need the reflash? if i have not shown any symptoms of the problem, should i still go get it done?

ratlover

03-29-2006, 11:08 AM

So acording to this regular cab trucks are fine?

RayMich

03-29-2006, 11:23 AM

So acording to this regular cab trucks are fine?I would not say that. Check your VIN and see if it falls within any of the ranges. ALL of these trucks are built in one of those two plants, so I would say that the regular cab trucks are also included. It is an engine issue, not a plant issue. The reason why they include the model year and plant code is because otherwise they might have more than one truck with the same sequence number in the VIN.

Rcher

03-29-2006, 11:54 AM

Took my dealer about 20 mins to do the reprogram. I'm glad this monkey is off my back!

I frequent many forums over the internet and this forum is by far the best there is! Thanks DP and all of its members!

:exactly:

bronxboy

03-29-2006, 01:44 PM

LeroyR

03-29-2006, 01:53 PM

I called my dealer this morning and they have me bringing it in tomorrow after lunch. They weren't aware of it, but sure was glad it was brought to their attention. While I haven't had any problems, a recall is a recall and they have always been good about performing all recalls on my vehicles.

LBZFAN

03-29-2006, 06:25 PM

Got mine done this morning, mine is a reg. cab and fell into the vin range. Ditto for everyone elses comments, glad to put this issue to rest.:rolleyes:
The dealer also commented that they have had no 06's come in with glow plug issues, and they are the biggest dealer in the area. Good News.

RichLockyer

03-29-2006, 10:31 PM

is it just me or does the tsb as it reads mean that not everyone in that range of vin #'s will need the reflash? if i have not shown any symptoms of the problem, should i still go get it done?
This is not a TSB.... it's a recall and all trucks in the VIN range are impacted.

The difference is, with a recall, the manufacturer actively notifies all owners and performs the service at no charge.
For a TSB, it is a technical service bulletin. It MAY or may not be covered for free out of warranty, a lot depends on your relationship with the dealer. By the book, a TSB is performed at "normal charge" (free under 3/36 or emissions warranty) BUT it is only performed as a repair based on a customer complaint.

IOTW: If there is a TSB for the steering shaft that indicates that it is to be replaced and you bring your truck in at 30k for an oil change, they will not replace the shaft. If you come in and complain about "a strange noise", they will replace the shaft.

Glamisboy

03-30-2006, 11:57 AM

I'm sorry if this was mentioned already but I didn't see it. What exactly is supposed to be solved by the re-flash ??

I got my lbz done a couple of days ago, the wts light doesn't seem to be any quicker. Maybe the re-flash will prevent it from staying on too long.

udflyer98

03-30-2006, 12:09 PM

This is not a TSB.... it's a recall and all trucks in the VIN range are impacted.
Not entirely true. Dealer ran my VIN this morning and it came up clean. My truck is in the last 500 numbers of the VIN range. The bulletin clearly states that not all trucks in that VIN range need the reflash.

tettruck

03-30-2006, 04:15 PM

Not entirely true. Dealer ran my VIN this morning and it came up clean. My truck is in the last 500 numbers of the VIN range. The bulletin clearly states that not all trucks in that VIN range need the reflash.

Just curious, but how would they know that IF your truck IS in the VIN range, that it's "clean", and does not require the reprogram?? My VIN is just outside of the VIN range.....I sure as heck hope that they got the VIN range right !

4rotorCorvette

03-30-2006, 06:24 PM

I work at a chevy truck and medium duty dealer as a tech. I have an LBZ with 5000 miles on it that was built on 10/05 I think. It had 4 codes in it that I accidentally erased while installing the Bully Dog Power Pup. I believe they had to do with my catless exhaust, and pulling the 4 required fuses (for BD install) with the ignition on (engine off). However, I am extremely concerned about the glow plugs destroying my engine for these two reasons:

1. There is a loud knocking at idle, it seems to go away after the engine warms up really well.

2. I just saw a live super up to date video at work on the LBZ glow plug problem and they said that the recall is constantly being updated and changed, meaning they have not figured it out completely -and- most glow plugs being pulled out had the tip fallen off and that REQUIRES heavy duty engine dissassembly.

Some other useful inside info I picked up today is that broken tips throw a different code than in-tact tips (I guess that's the same as slow open/fast open??) and that aftermartket electronics such as alarm systems and remote starts may cause/worsen the problem. My boss told me that we pulled 8 glow plugs out of a truck that were broken off but there were no driveability concerns whatsoever and not to worry but that is of little comfort. I don't think there is a "good" place for them to fall.

My question to you guys is WHAT SHOULD I DO?
I wanted to pull the glow plug fuse and let it throw the check engine light, as long as the plugs don't fry any more (would this work? would I go into some kind of limp mode?) but the fuse is not easily accesible. What about disconnecting the control module?

Also, I will not rest until I pull all 8 of my glow plugs to see if the tips have broken off (heard it's fairly easy to do). If they are burnt but in tact, I will try to have them relaced under warranty. I pray that they are in tact and that my loud knocking during cold idle is unrelated.

One question:
If one or more of the tips were broken off, would it cause bad driveability all the time and codes to come back because:
The truck runs very well under load and warm, and there are no codes.

Thanks a lot and I hope that this has been at least a little informative. I will post updates as soon as I can. Good luck with the glow plugs, and on the bright side they also said the LBZ was way faster that any other diesel on the market right now (how about that!) and it is detuned for the Allison. They called it a sleeping monster or a quiet gun or something like that and said it was insanely powerful compared to LLY, Powerstroke and Cummins. That was an official live GM video from today.

jbdmax

03-30-2006, 06:38 PM

I find it hard to believe that eight tips in the combustion chamber would not cause some kind of problem, beside the fact that they have to go somewhere after the cyl. and the next stop is the turbo. With the speed that the turbo spins i don't believe anything could pass thru without causing damage. but this just my own personal opinion.
If you are concerned about your engine why don't you have it checked under warranty?
Took my truck to the dealer 2 days ago and they said it would be april 18 before they could update my glowplug controller, but i have not had any problems so i will wait.
Why don't you pull the fuse for glowplugs and see what happens, you are in fla. so cold start should not be an issue, i don't wait for glowplugs any more and have not had any problems.

4rotorCorvette

03-30-2006, 07:18 PM

harleyman2

03-30-2006, 07:29 PM

Is there an official recall to replace the glow plugs on all LBZ engines :confused:.

4rotorCorvette

03-30-2006, 07:36 PM

Yes there is a recall, it is very new so some dealers may not be aware. It says to reprogram the glow plug control module no matter what, and only inspect and possibly replace the glow plugs if there is a code found indicating failure. The procedure then is to remove the glow plugs, replace if they are burnt, and reprogram the module. Missing tips require engine teardown. This is brand new and constantly changing so don't blame the dealers if they don't know what you are talking about at first.

So actually there is no recall to "replace the glow plugs". Hope this helps.

harleyman2

03-30-2006, 07:58 PM

Ok so its the "glow plug module" program thats the problem and not the glow plugs themselves.

Yes it helps and thanks!

4rotorCorvette

03-30-2006, 08:05 PM

udflyer98

03-30-2006, 08:11 PM

I don't know how they keep track of which module is in which truck. My service advisor was really cool and printed out the screen on GM VIS for me. Under the Required Field Actions section, it says "Vehicle has no current record of outstanding campaigns". He also printed a copy of the build sheet so I could see "all" of the options on the truck. It has codes for the torsion bars, body lift and what plant it came from. The one item I missed until just now is that it shows a build date of 3/2. I would have to read the bulletin again, but I think it was effective for trucks built thru the end of February. Not knowing what shift was truck was built on, I would say the VIN range goes thru 3/3/06.

jbdmax

03-30-2006, 08:36 PM

I agree with you, there has to be damage when the tip breaks off, that's why GM makes you tear the engine down. I don't want anyone besides myself working on my truck, it's just a personal preference, you never know someone could be jealous that you have a brand new $40+ truck, or just not care. Therefor I will pull my own glow plugs and do my own reprogramming. I was just wondering as far as the symptoms of a broken off tip(s) and what to do in the present situation. Thanks.

p.s. - I am still going to try to disable the glow plugs for now, and hope to get away with just a SES light and no power reduction. Any info on that?I don't know about the knock when you first start your truck, mine is always very quiet, what some think is noisy could sound normal to others, but if you are in doubt i would have a mechanic with a lot of dmax experience listen to it. some of what you pay for when selecting a mechanic is experience, just about anyone can change parts.

chevy max 06

03-30-2006, 08:59 PM

You could also say that they are trying to modify the module program to prevent the plugs from burning up. It's true that the 4.7s fry easy but the whole point of switching from 11v was quick warm-up and easy start and it works well. (LBZs start in 1 second every time) But the fact that the glow plugs are staying on sometimes tells me there is another problem. As far as you being a tech what is your opinion on how long a glow plug should stay on at first start up in the morning with temps 20 to 40 degrees and will the new flash cut back the time the glow plug stays on.Thanks for the info given.

tsak

03-30-2006, 09:01 PM

My Vin is in the recall range

I gave my service rep at the Chevy dealer the recall number on Tuesday. He said when they pulled up the number it had no information for their dealership and according to the information given to them, the update would not be available until June. I dropped them a copy of the notice and after they did some research, I got a call from the rep. He said they had the programming update and were discussing how and when they were going to implement it.

I decided to call the GMC dealer less than 1/2 mile away. They too knew nothing about the recall, but would look into it. In less than 10min. they called back saying the recall was just a program modification and no parts were involved so just come down anytime and they could do it while I wait.

Called my service rep at the Chevy dealer and told him the GMC dealer response. He said he needed to discuss it with his Manager. In less than 5 min. he called back saying come down anytime and they will do what ever it takes to get this done! Called this afternoon to tell them I had time and was on my way. They had someone waiting for me when I got there. It took all of 20 min. including the paper work. They thanked me for bringing the recall to their attention and asked it there was anything else I was having problems with.

Isn't competition great! I guess I should have asked for a free fill-up for my troubles.

tsak

03-30-2006, 09:21 PM

Forgot

Thanks for the printout Max, :hail:

Tom

Rcher

03-30-2006, 09:27 PM

1. There is a loud knocking at idle, it seems to go away after the engine warms up really well.

One question:
If one or more of the tips were broken off, would it cause bad driveability all the time and codes to come back because:
The truck runs very well under load and warm, and there are no codes.

When my GP broke, I had a terrible knock and engine miss for the first 20 sec's. Directly after that, my CEL came on. I'm not sure what sort of knock you are hearing but if you had a bad glow plug, either a "slow open" or a "fast open" condition, you would get a CEL because the circuit at the glow plug would be an open circuit thus throwing a code. I think you need to take your truck to a Dmax tech as already mentioned and have them diagnose your knock. I dont know but maybe its possible to have a bad glow plug and not a CEL? Either way, I would be concerned and get it looked at by a certified Dmax tech.

4rotorCorvette

03-31-2006, 06:53 AM

As far as you being a tech what is your opinion on how long a glow plug should stay on at first start up in the morning with temps 20 to 40 degrees and will the new flash cut back the time the glow plug stays on.Thanks for the info given.

Mine never comes on but I live in Florida. Even though it has been relatively cold lately, I've never seen it (thank God). I would think that if it does come on, it shouldn't stay on for more that a couple seconds, as they are only 4.7v.

Question: Does the light go on every time they are active, or only during startup? I heard they heat the engine even while running if it's cold.

4rotorCorvette

03-31-2006, 06:56 AM

When my GP broke, I had a terrible knock and engine miss for the first 20 sec's. Directly after that, my CEL came on. I'm not sure what sort of knock you are hearing but if you had a bad glow plug, either a "slow open" or a "fast open" condition, you would get a CEL because the circuit at the glow plug would be an open circuit thus throwing a code. I think you need to take your truck to a Dmax tech as already mentioned and have them diagnose your knock. I dont know but maybe its possible to have a bad glow plug and not a CEL? Either way, I would be concerned and get it looked at by a certified Dmax tech.

Mine never misses and the knock is not terrible as most of you have described, only a loud "hitting" during cold idle. Also, I have no check engine light since I erased the first one, which I beleive (hope) was unrelated.

Question: If I had a broken glow plug and erased the code, would it come back pretty soon?

dspears

03-31-2006, 11:05 AM

Hey Max,
with all of the glow plug woes going on, I thought I would just tell you how much I love the T shirt pic. What a rack. Anyway, I'm in turmoil with my truck out of town with my business partner, and the glow plug light on. He is trying to get it looked at in Myrtle Beach today. the pic made me smile as it does everytime i see one of your posts.

carhauler

03-31-2006, 11:22 AM

I just saw one torn down , the head was on the bench with 2 GP out , I looked at the head/piston and cylinder as well as I could and saw no damage , it was a Brand new truck still had the stickers on it so I don't know the miles and the salesman did not either ,it was sooty on the piston and valves and no marks or anything in the soot so where ever the tips went it was not too ugly on that one, They were updating my new one as I was seeing this one , I sure hope the update is the end of this problem!

4rotorCorvette

03-31-2006, 03:20 PM

Document ID# 1802153
2006 Chevrolet Chevy K Silverado - 4WD
http://service.gm.com/engif/000/999/999/999999995.gif Subject:Diesel Engine Glow Plug Trouble Codes - keywords calibration circuit glowplug GPCM hard indicator LBZ LLY module multiple P064C P0671 P0672 P0673 P0674 P0675 P0676 P0677 P0678 program programming SES #PIP3586C - (03/28/2006)

Models:2006 Chevrolet Express, Kodiak, Silverado
2006 GMC Savanna, Sierra, TopKick
Equipped with the 6.6 (RPO - LBZ or LLY) Duramax Diesel Engine

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1802153&psdid=1233&evc=sm#ss1-1802153">Condition/Concern:

A vehicle may be brought into the dealer with the SES light on and multiple cylinder glow plug DTCs set. Multiple glow plug DTCs may be caused by internal opens in the glow plugs. There are two different descriptions for an internal open in a glow plug. A fast open glow plug is a plug with an internal open circuitry, but no visual damage to the tip of the plug. A slow open glow plug is a plug that has internal open circuitry, and the tip of the plug is missing or damaged.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1802153&psdid=1233&evc=sm#ss2-1802153">Recommendation/Instructions:

Complete the current SI diagnostics for any symptoms or DTCs found. If the diagnostics for P0671-P0678 led to a glow plug resistance of more than 1 ohm, replace all of the glow plugs. If any of the glow plug tips are missing, the cylinder head must be removed. All debris needs to be removed from the cylinder. When the tip of the glow plug enters the cylinder, engine damage may occur. Make any engine mechanical repairs as needed.
<LI type=1>A loose battery feed connection at the starter, alternator, or the Glow Plug Control Module (GPCM) may induce glow plug concerns. When the starter, alternator, or GPCM battery feed circuit has a poor connection, the GPCM will sense a voltage fluctuation, and induce the GPCM to power up the glow plugs. Untimed GPCM cycling may cause glow plug concerns. Inspect the connections at the starter, alternator, and both ends of the battery feed cable to the GPCM. Connector C1 terminal 1 at the GPCM is a quick disconnect type of connector. Make sure terminal fit is clean and tight and the quick disconnect is seated properly. The source or main power feed location differs depending on the vehicle being serviced. On GMT800 C/K model trucks, the power feed stud is located in the Under Hood Bussed Electrical Center (UBEC). To access this power feed stud, the secondary UBEC cover has to be removed. On GMT610 "G" vans inspect the underhood junction block connection. On GMT560 4500/5500 trucks inspect the secondary fuse block connection. <LI type=1>There are other electrical scenarios that can induce glow plug concerns. If the glow plug system senses a certain electrical "noise" on the power feed, the glow plugs may also go open. This electrical "noise" may be induced by jump starting, disconnecting the batteries with the ignition in the ON position, or a battery charger being used during a module reprogramming event. <LI type=1>If the glowplug DTCs have set on a very low mileage vehicle (below 1000 miles) the glowplugs may have been damaged by the engine start up test conducted at the engine assembly plant. <LI type=1>Do not replace the GPCM for all 8 internal opened glow plugs. GPCMs have been returned and inspected with no problem found.
Complete all electrical circuit inspections and engine repairs as described above. After necessary repairs are completed, update the calibration in the GPCM. (See campaign 06522) Install the new GPCM software, and complete Fuel Injector Flow Rate Programming following SI procedures.Note: Add-on remote starter or alarm kits must be removed before any glowplugs are replaced. Interruptions to normal starting procedures may induce glowplug concerns.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
http://service.gm.com/engif/000/999/999/999999994.gif WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
© Copyright General Motors Corporation. All Rights Reserved.
Document ID# 1802153
2006 Chevrolet Chevy K Silverado - 4WD

RayMich

03-31-2006, 03:45 PM

Carmine LBZ

03-31-2006, 05:05 PM

Looks like GM is blaming the failed glowplug problem on add-on (aftermarket) remote starter and alarm kits. It appears as if they are laying down the ground work to start denying warranty repairs if these kits are installed? I wonder what the response might be from these aftermarket companies.

You may be right. On the other hand, I wonder how many trucks with broken glow plugs didn't have any add-ons. Mine was bone stock. Time will tell...Carmine

luvs hds

03-31-2006, 05:19 PM

Thanks again to all you DP.com members for the latest and greatest news! Dealer told me my truck is on "the list" for the recall. Apt made....

epd

03-31-2006, 06:42 PM

can someone tell me if the gpcm is also referred to as a power control module, thanks

BIGR

03-31-2006, 06:59 PM

Took my truck in this morning for the recall and the service advisor asked me if I had been having any problems with the glow plugs. I told him no but I wanted to get the reprogram done. On the work order he put customer request recall 06522, reprogram pcm per GM. At first I thought he was going to tell me if I wasn't having any problems that they would not do the recall. I told him that I didn't want to get out on my 6000 mile vacation trip and have my truck malfunction. He agreed and said that they would take care of it. They also replaced the front differential autuator. It had been leaking some fluid for months. I am glad to get that work done and it eases my mind. I would have to say that dealership so far has been extremely nice and easy to deal with.

epd

03-31-2006, 07:22 PM

BIGR

03-31-2006, 07:42 PM

Yes it said: CUSTOMER REQUEST RECALL 06522
REPROGRAM PCM PER GM

I forgot to mention earlier that the service manager asked me if I had got anything in the mail about the recall and I said no. I was afraid that he was going to turn me down. I told him that I had read alot on the internet about the recall and he acted impressed. I guess he thought this guy has been doing his homework, we better do something. As far as I know my truck was the first one to get reprogrammed at that dealership.

Once again guys thanks for the heads up on this glow plug issue. If I had not read it on this forum I would have not found later until GM sent out a recall notice. That might have been too late. :eek:

epd

03-31-2006, 07:52 PM

RayMich

03-31-2006, 08:20 PM

Yes it said: CUSTOMER REQUEST RECALL 06522
REPROGRAM PCM PER GM
The writeup man should have written REPROGRAM GLOW PLUG CONTROL MODULE (GPCM).

chevy max 06

03-31-2006, 09:13 PM

Mine never comes on but I live in Florida. Even though it has been relatively cold lately, I've never seen it (thank God). I would think that if it does come on, it shouldn't stay on for more that a couple seconds, as they are only 4.7v.

Question: Does the light go on every time they are active, or only during startup? I heard they heat the engine even while running if it's cold. The light comes on only at startup for a max of 4 seconds. After that the light won't come on depending how long the truck has been sitting. If the truck sits for maybe 5 or 6 hours than startup again the light will come on again for 4 seconds

a bear

03-31-2006, 11:11 PM

My service ticket states that the GPCM was reprogrammed per Doc#1797239. I don't think the tech checked the battery, starter, and GPCM connections in the short time the truck was there. (20-30 minutes max) I'm thinking most of the owners that have been reporting their GPCM reprogramming is complete were also missing the wiring checks.

My question: Is it possible the reflash will address glow plug cycling concerns caused by loose wires/voltage fluctuations? (now or future) If not, are we really out of harms way with just the reflash?

Another question: Does anyone know the contents of Doc# 1797239?

SD-455

03-31-2006, 11:53 PM

The writeup man should have written REPROGRAM GLOW PLUG CONTROL MODULE (GPCM).
Had my recall done today. The work order said Recall # 06522---- Glow plugs may stay on too long---- Reprogram Module. About one hour after they started to work on it I asked when it would be done and the service manager said it was done and was in the wash bay getting a bath. Not only did I get the recall done I also got a clean truck out of the deal.

4rotorCorvette

04-01-2006, 08:59 AM

can someone tell me if the gpcm is also referred to as a power control module, thanks

No. The PCM is the same as the ECU.

4rotorCorvette

04-01-2006, 09:00 AM

The light comes on only at startup for a max of 4 seconds. After that the light won't come on depending how long the truck has been sitting. If the truck sits for maybe 5 or 6 hours than startup again the light will come on again for 4 seconds

Thanks. My light never ever comes on even on cold morning starts here in Florida.

4rotorCorvette

04-01-2006, 09:06 AM

Document ID# 1807645
2006 Chevrolet Chevy K Silverado - 4WD
http://service.gm.com/engif/000/999/999/999999995.gif Subject:Glow Plug Control module Programming - keywords calibration GPCM LLY program programming SPS #PIP3565A - (03/31/2006)

Models:2006 Chevrolet Express, Kodiak, Silverado
2006 GMC Savanna, Sierra, TopKick
Equipped with the 6.6 Duramax Diesel Engine (RPO code LBZ and LLY)

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1807645&psdid=1233&evc=sm#ss1-1807645">Condition/Concern:

A dealer may have the need to replace a Glow Plug Control Module (GPCM) on a 2006 Model Year 6.6L diesel equipped vehicle.
This information was originally written to advise dealers TIS2000/Tech 2 software did not support GPCM programming.
GPCMs were shipped with a base calibration and operated without SPS programming.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1807645&psdid=1233&evc=sm#ss2-1807645">Recommendation/Instructions:

Complete the current SI diagnostics for any symptoms or trouble codes found. If diagnostics have led to a GPCM replacement, or there is a need to update the GPCM calibrations, the module can be programmed using normal SPS programming. The Tech 2 software may or may not show the current version of software that is in the GPCM. Engineering is investigating the Tech 2 software, and the ability to read current version calibration numbers. At this time calibrate the GPCM, if the GPCM has the newest software, the Tech 2 will show a message stating the vehicle has already been updated.
Note:: If the GPCM is replaced, complete the SI procedures for "Fuel Injector Flow Rate Programming."
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
http://service.gm.com/engif/000/999/999/999999994.gif WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
© Copyright General Motors Corporation. All Rights Reserved.
Document ID# 1807645
2006 Chevrolet Chevy K Silverado - 4WD

tettruck

04-01-2006, 12:54 PM

Complete the current SI diagnostics for any symptoms or trouble codes found. If diagnostics have led to a GPCM replacement, or there is a need to update the GPCM calibrations, the module can be programmed using normal SPS programming. The Tech 2 software may or may not show the current version of software that is in the GPCM. Engineering is investigating the Tech 2 software, and the ability to read current version calibration numbers. At this time calibrate the GPCM, if the GPCM has the newest software, the Tech 2 will show a message stating the vehicle has already been updated.

So does this mean:

1) If you don't have any codes, then the dealer won't reprogram?

or

2) Even if you don't have codes, the dealer is required to reprogram?

and,

3) Can the Tech2 even tell if my truck is already updated?

I'm confused. It sounds like the bulletin is saying it's a mandatory recalibration of the GPCM.

"At this time calibrate the GPCM, if the GPCM has the newest software, the Tech 2 will show a message stating the vehicle has already been updated."

I'd sure like to know, since my truck sits at the dealer right now. My VIN is after the range stated, but it seems like GM is nnot sure of what's gone on with the glow plug problem, and want to recalibrate everyone.

Yes? No?

dlbrack

04-01-2006, 03:54 PM

Never showed any codes, ran fine! Took it to the stealer yesterday took the tech about 20 min. to reprogram. This is a great web site, I knew about the recall from reading it from the diesel place well before being notified from GM
Thanks to all !!!

RichLockyer

04-01-2006, 08:49 PM

I told him that I had read alot on the internet about the recall and he acted impressed.
I try not to mention online forums if I have a source that would be "more credible" to the person I am talking to.
I my case, I took a screen shot of the page from www.mygmlink.com

It's really a good idea for everyone to get their VIN registered there and check it regularly. The TWO recalls for the '06 LLY appeared on there the day after they were issued, and though they still show that the pdf for my mailer is not yet available, both recall numbers were given and that was all it took for the manager to get on the horn to GM and find out what the 2nd recall was.

When I went in, at first he said that there were no recalls showing for my truck, but that he was aware of the GPCM recall and would get started on that while he researched the second one. Had I just walked in and said that "I read on an internet forum that I have two recalls" he probably would have blown off the second one. It helped that I had both numbers, but the screen shot proved that I wasn't FOS.

I'll mention the internet AFTER it's apparent that I'm going to be taken care of.

http://personal.linkline.com/rlockyer/recall.jpg

RichLockyer

04-01-2006, 08:55 PM

1) If you don't have any codes, then the dealer won't reprogram?

or

2) Even if you don't have codes, the dealer is required to reprogram?

and,

3) Can the Tech2 even tell if my truck is already updated?
No, yes, yes.
I'm confused. It sounds like the bulletin is saying it's a mandatory recalibration of the GPCM.
I think one of the earlier steps when a GP failure was encountered was to replace the GPCM, since it was not known for sure whether it was software or a hardware issue.
It looks like this memo is saying that replacement GPCMs probably had the latest revision... the Tech2 will verify that and upgrade or not upgrade as needed. I read that memo as indicating a possible reason why a Tech2 may NOT attempt to upgrade... if the software is already current it won't.

bronxboy

04-01-2006, 09:38 PM

I had mine done and i notice that the glow plug indicator does not come on anymore?I think this re-flash eliminates the glow plug completely..

If thats true then this wont be a problem for me here in florida,but what about the guy's in the colder states that need it??

RichLockyer

04-01-2006, 10:40 PM

Mine came on for 3-4 seconds this morning... no change at all.

Rcher

04-01-2006, 11:33 PM

Mine came on for 3-4 seconds this morning... no change at all.

Mine too.

RayMich

04-02-2006, 01:26 AM

I had mine reprogrammed on Monday and my glow plug light still comes on for 2 - 3 seconds first thing in the morning. I haven't noticed any change in the length of time that it runs.

4rotorCorvette

04-02-2006, 11:22 PM

RichLockyer

04-02-2006, 11:27 PM

The LBZ is beast. I really love the way it runs and sounds. I estimate mine has 400 rear wheel horsepower and all it has is an Airaid intake and an MBRP catless exhaust with the BD Power Pup on Tow/Economy (!!).
There is some debate over the power levels on the Bully Dog. My '06 LLY put 350 to the rear wheels on Performance, and some of the more knowledgable guys are saying that the '06 LLY and LBZ end up at the same level (BullyDog isn't too clear)

I would be VERY interested in seeing dyno results on your truck run on Performance on a Mustang dyno.

a bear

04-03-2006, 09:44 AM

My service ticket states that the GPCM was reprogrammed per Doc#1797239. I don't think the tech checked the battery, starter, alternator, and GPCM connections in the short time the truck was there. (20-30 minutes max) I'm thinking most of the owners that have been reporting their GPCM reprogramming is complete were also missing the wiring checks.

My question: Is it possible the reflash will address glow plug cycling concerns caused by loose wires/voltage fluctuations? (now or future) If not, are we really out of harms way with just the reflash?

Another question: Does anyone know the contents of Doc# 1797239?

Am I the only one concerned about this? If you closely read paragraph 1. in 4rotorCorvett's post #42 it directly state the concern mentioned above. It even goes on to say that jump starting a vehicle can cause glow plug failure. :eek: Just curious if the reflash addresses these potential problems or is it just a 1/2 fix.....It seems unlikely that the techs are checking for loose wires during this recall......

Rcher

04-03-2006, 10:45 AM

Am I the only one concerned about this? If you closely read paragraph 1. in 4rotorCorvett's post #42 it directly state the concern mentioned above. It even goes on to say that jump starting a vehicle can cause glow plug failure. :eek: Just curious if the reflash addresses these potential problems or is it just a 1/2 fix.....It seems unlikely that the techs are checking for loose wires during this recall......

That document refers to a "check engine" light and one or more of the codes that refer to a glow plug failure. If you havent set off one of these codes, I wouldnt worry about it. If it would make you feel better, the wiring that needs to be checked is very easily found, I checked mine personally because I'm anal about making sure bulletins are followed to the "T".

If you have thrown a glow plug code listed in bulletin # 1802153, then yes you should have that wiring checked. Otherwise, just a simple re-programming of your GPCM should be fine.

michbritt

04-03-2006, 11:16 AM

Mine came on for 3-4 seconds this morning... no change at all.

Same here, no change in behavior. Light comes on for 3 seconds like it did before.

a bear

04-03-2006, 11:30 AM

Thanks Richer.
Just wanted to be sure all bases were covered for everyone involved. From a personal standpoint I had applied removable lock-tite to my connections a couple months back when all this started so I know these connections are well secured. I am curious to know if they addressed voltage surges in general (Jump starting and remote starters were mentioned) I would think the reprogram at least involved some sort of ladder logic change that placed a wider limit on surge induced activations of the module. It would be hell to have to pull heads on an engine after undergoing a simple jump start. Hopefully they addressed these potential issues but it would be nice to know the details of the module update.

Still not sure about the contents of GM Doc # 1797239. May be an earlier verson of Doc# 1802153. Maybe one of the techs can post a copy.

jasontrucks76

04-03-2006, 12:17 PM

Thank you for the info guys:) I stoped in the the dealer on Sat. and he pulled my truck up and said it was in the recall. I droped it off this morning and they said it will be done by lunch:)

DP rocks
JT

cruizin54

04-03-2006, 01:58 PM

I just want to say THANKS to this forum. I read about the glow plug issues while I was waiting to take delivery of my new GMC 3500 CC Dually 4x4 with the LLY engine. I was having second thoughts about trading in my '02 Chevy 2500HD but with the 'heads up' about making sure the glow plug indicator on the dash went OUT and to have it towed if it did I went ahead with the deal.

Took my new one in on Friday for the recall. No issue. This new engine is a LOT quieter than my LB7.

Just waiting now for Edge to come out with a chip. Really loved my Edge Juice w/attitude in my '02. Naturally, I removed it before I traded it in hoping that Edge would be able to reprogram it. No such luck...

Bulldogger

04-03-2006, 02:55 PM

Had the reprogram done today. I never had any problems prior. I wonder if the reprogram prevents the glow plugs from cycling more then once, or maybe prevents them from running more then a 3-4 second duration. Anyway not all trucks in the effected vin number had the problems, I think it was only a few. I would still like to know the actual cause for the melting tips on the trucks that were repaired.

Thanks to everyone on the site with all the great info and heads up information. :ro)

4rotorCorvette

04-03-2006, 05:55 PM

There is some debate over the power levels on the Bully Dog. My '06 LLY put 350 to the rear wheels on Performance, and some of the more knowledgable guys are saying that the '06 LLY and LBZ end up at the same level (BullyDog isn't too clear)

I would be VERY interested in seeing dyno results on your truck run on Performance on a Mustang dyno.

Stock LBZs are dynoing 300 rwhp on average. Bully dog claims 320 rwhp on the STOCK setting with the Power Pup, which either means that the LBZ is underrated (possible) or their version of "stock" is slightly tweaked. Bone stock with the Power Pup on "Tow/Economy" they claim 374 rwhp and 776 tq to the wheels on the LBZ, and I think my cold air intake and full exhaust might just bump it up to 400 (MBRP claims 18 hp from their system). This is why I have never even tried the "Performance" setting, as my current setup is right around 400 rear wheel hp. I would be more than happy to dyno on a Mustang soon and expect 375-380 on the Tow/Economy setting.

4rotorCorvette

04-03-2006, 05:57 PM

Thanks Richer.

Still not sure about the contents of GM Doc # 1797239. May be an earlier verson of Doc# 1802153. Maybe one of the techs can post a copy.

Any other requests?

Document ID# 1797239

--------------------------------------------------------------------------------

Subject: Product Emission-Engine Glow Plug System Concern-Reprogram Glow Plug Control Module #06522 - (03/24/2006)

Models: 2006 CHEVROLET SILVERADO, EXPRESS, KODIAK

2006 GMC SIERRA, SAVANA, TOPKICK

EQUIPPED WITH 6.6L V8 (RPO LLY

--------------------------------------------------------------------------------

Condition
Certain 2006 Chevrolet Silverado, Express, Kodiak; and 2006 GMC Sierra, Savana, Topkick model trucks equipped with a 6.6L V8 (RPO LLY - VIN 2 or RPO LBZ - VIN D) Duramax Diesel engine, may have a condition in which the engine glow plugs are overstressed electronically, causing glow plug failure and engine damage in some cases.

Correction
Dealers are to reprogram the Glow Plug Control Module (GPCM).

Vehicles Involved
Involved are certain 2006 Chevrolet Silverado, Express, Kodiak; and 2006 GMC Sierra, Savana, Topkick model trucks equipped with a 6.6L V8 (RPO LLY - VIN 2 or RPO LBZ - VIN D) Duramax Diesel engine and built within these VIN breakpoints:

Year
Division
Model
From
Through

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

2006
Chevrolet
Express
61100002
61221358

2006
Chevrolet
Kodiak
6F400002
6F422129

2006
GMC
Sierra
6E100003
6E232523

6F100002
6F216758

2006
GMC
Savana
61100022
61221125

2006
GMC
TopKick
6F400010
6F904910

Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the system below. Not all vehicles within the above breakpoints may be involved.

-- GM dealers should use GMVIS.

For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided through the applicable system listed below. Dealers will not have a report available if they have no involved vehicles currently assigned.

-- US GM - GM DealerWorld Recall Information

-- Canadian GM - GMinfoNet Recall Reports

-- Export dealers - sent directly to dealers

The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this recall.

Parts Information
Do not attempt to order the calibration number from GMSPO. The calibration numbers are programmed into Control Modules via a Techline Tech 2 scan tool and the Techline Information System (TIS) 2000 terminal with the calibration update. Use data version 3.5 for 2006 or later, broadcast to dealers, and available on TIS2WEB, March 19, 2006 (US), March 22, 2006 (Canada); and on TIS CD-ROM version 4.0 / 2006, which will be mailed to dealers by April 18, 2006. To complete this service procedure, the Tech 2® must also be updated to release 26.002 or greater. If you cannot access the calibration, call the Techline Customer Support Center at 1-800-828-6860 (English) or 1-800-503-3222 (French) and it will be provided.

Service Procedure
Glow Plug Control Module Reprogramming

Notice: Before reprogramming, please check the battery condition to prevent a reprogram error of the Glow Plug Control Module due to battery discharge. If the vehicle battery is not fully charged, ensure that it is fully charged prior to performing the reprogramming procedure.

The ignition switch must be in the proper position. The Tech 2 prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the programming procedure, unless instructed to do so.

Make certain all tool connections are secure, including the following components and circuits:

• The RS-232 communication cable port

• The connection at the data link connector (DLC)

• The voltage supply circuits

DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections are secure and the TIS terminal operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.

Tech 2 Remote Programming
Use the normal "request method" through "Service Programming System" to request information from the vehicle.
At the Techline Terminal enter TIS SPS programming system.
Select Tech 2 from the "Select Diagnostic Tool" window.
Select Reprogram ECU from the "Select Programming Process" window.
Select Vehicle from the "Select ECU Location" window.
Select Next to go to the "Preparing for Communication" instruction Screen.
Select Next to view the "Validate Vehicle ID Number" screen. If the Vehicle ID Number does not appear on the screen, manually insert the VIN into the VIN window of the "Validate Vehicle ID Number" screen.
Select Next to view the "Supported Controllers" screen.
Select Glow Plug Control Module from "Supported Controllers" window.
Select Next to view the "Select Programming Type" window.
Select Normal from the "Select Programming Type" window.
Select Next to view the "Service Programming System Calibration Selection" screen.
Select Next to view "Summary" screen.
Verify that current and selected calibration information is displayed on the "Summary" screen.
Select Next to download the calibration to the Tech 2.
Back at the vehicle enter "Service Programming Systems".
Select "Program ECU" and follow on screen instructions.
Make sure to turn OFF the ignition for 30 seconds after the "Programming is Complete". Clear diagnostic trouble codes (DTCs), if required.
CALIFORNIA, MASSACHUSETTS, MAINE, & VERMONT VEHICLES ONLY: Install a Recall Identification Label. Also, for California vehicles complete a "Proof of Correction
Recall Identification Label -- California, Massachusetts, Maine & Vermont Vehicles Only
Place a Recall Identification Label on each vehicle corrected in accordance with the instructions outlined in this Product Recall Bulletin. Each label provides a space to include the recall number and the five-digit dealer code of the dealer performing the recall service. This information may be inserted with a typewriter or a ballpoint pen.

Put the Recall Identification Label on a clean and dry surface of the radiator core support in an area that will be visible to people servicing the vehicle.

When installing the Recall Identification Label, be sure to pull the tab to allow adhesion of the clear protective covering. Additional Recall Identification Labels for US dealers can be obtained from Dealer Support Materials by either ordering on the web from DWD Store, gm dealerworld.com, or calling 1-866-700-0001 (Monday-Friday, 8:00 a.m. to 5:00 p.m. EST). Request Item Number S-1015 when ordering.

Courtesy Transportation - For US and Canada
The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranty. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product recall is very important in maintaining customer satisfaction. Dealers are to ensure that these customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. Dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.

Claim Information
Submit a Product Recall Claim with the information indicated below.

Repair Performed
Part Count
Part No.
Parts Allow
CC-FC
Labor Op
Labor Hours*
Net Item

Reprogram Glow Plug Control Module
N/A
N/A
N/A
MA-96
V1464
0.4
N/A

Courtesy Transportation for vehicles within the New Vehicle Limited Warranty (US & Canadian GM Dealers)
N/A
N/A
N/A
MA-96
*
N/A
**

* Submit courtesy transportation using normal labor operations for courtesy transportation as indicated in the GM Service Policies and Procedures Manual for vehicles within the New Vehicle Limited Warranty.

** The amount identified in the "Net Item" column should represent the actual dollar amount for courtesy transportation.

Refer to the General Motors WINS Claims Processing Manual for details on Product Recall Claim Submission.

Customer Notification - For US and Canada
General Motors will notify customers of this recall on their vehicle (see copy of customer letter included with this bulletin).

In order to ensure full protection under the emission warranty, and the right to participate in future recalls, the customer notification letter recommends that customers have their vehicles serviced as soon as possible. It also advises that failure to do so could legally be determined to be lack of proper maintenance. The vehicle may fail a state or local emission inspection test if the recall work is not completed.

Customer Notification - For Export
Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter.

In order to ensure full protection under the emission warranty, and the right to participate in future recalls, the customer notification letter recommends that customers have their vehicles serviced as soon as possible. It also advises that failure to do so could legally be determined to be lack of proper maintenance. The vehicle may fail a state or local emission inspection test if the recall work is not completed.

Dealer Recall Responsibility - All
All unsold new vehicles in dealers' possession and subject to this recall must be held and inspected/repaired per the service procedure of this recall bulletin before customers take possession of these vehicles.

Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time forward.

Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Recall follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter.

In summary, whenever a vehicle subject to this recall enters your vehicle inventory, or is in your dealership for service in the future, you must take the steps necessary to be sure the recall correction has been made before selling or releasing the vehicle.

***THE FOLLOWING 2 PARAGRAPHS ARE NOT FOR CANADA OR EXPORT***

When a California emissions recall is completed by a GM dealer, the dealer must provide the vehicle owner a "Proof of Correction Certificate" which the owner may need to present to the California Department Of Motor Vehicles (DMV) when renewing their vehicle registration. Without this correction certificate, the owner may be unable to renew their vehicle registration.

Additional Certificates can be obtained, at no charge, from Dealer Support Materials by calling 1-866-700-0001 (Monday-Friday, 8:00 a.m. to 5:00 p.m. EST). Ask for GM Item Number 1825 when ordering.

April 2006
Dear General Motors Customer:

This notice is sent to inform you that General Motors is conducting a voluntary emission recall that includes your vehicle.

Reason For This Recall
Your 2006 Chevrolet Silverado, Express, Kodiak; GMC Sierra, Savana or Topkick model truck, equipped with a 6.6L Duramax Diesel V8 engine, may have a condition in which the engine glow plugs are overstressed electronically, causing glow plug failure and engine damage in some cases.

What Will Be Done
Your dealer will reprogram the Glow Plug Control Module (GPCM). This service will be performed for you at no charge .

How Long Will The Repair Take?
It is likely that your dealer will need your vehicle longer than the actual service correction time of approximately 30 minutes, because of service scheduling requirements.

Contacting Your Dealer
Please contact your dealer as soon as possible to arrange a service date. Instructions for making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be needed to schedule, process and repair your vehicle.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below. The Customer Assistance Center’s hours of operation are from 8:00 AM to 11:00 PM, EST, Monday through Friday.

Division
Number
Text Telephones (TTY)

Chevrolet
1-800-630-2438
1-800-833-2438

GMC
1-866-996-9463
1-800-462-8583

Guam
1-671-648-8650

Puerto Rico - English
1-800-496-9992

Puerto Rico - Español
1-800-496-9993

Virgin Islands
1-800-496-9994

GMICT
1-800-862-4389

Customer Reply Form
The enclosed customer reply form identifies your vehicle. Presentation of this form to your dealer will assist in making the necessary correction in the shortest possible time. If you no longer own this vehicle, please let us know by completing the card and mailing it back to us.

Courtesy Transportation
: If your vehicle is within the New Vehicle Limited Warranty your dealer may provide you with shuttle service or some other form of courtesy transportation while your vehicle is at the dealership for this repair. Please refer to your Owner’s Manual and your dealer for details on Courtesy Transportation.

Emission Law Information
: In order to ensure your full protection under the emission warranty made applicable to your vehicle by State or Federal Law, and your right to participate in future recalls, it is recommended that you have your vehicle serviced as soon as possible. Failure to do so could legally be determined to be lack of proper maintenance of your vehicle. Also, your vehicle may fail a state or local emission inspection if this recall is not accomplished.

IMPORTANT MESSAGE FOR CALIFORNIA RESIDENTS
The California Air Resources Board (CARB) requires vehicle emission recalls be completed prior to California registration renewal. Uncorrected emission recalls will result in the inability to renew your California vehicle registration.

At the time of emission recall completion, your California dealer will issue a "Proof of Correction Certificate". Keep this certificate and, if required, present it to the Department of Motor Vehicles when renewing your California registration as proof of recall completion.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

Scott Lawson

General Director,

Customer and Relationship Services

Enclosure

06522

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© Copyright General Motors Corporation. All Rights Reserved.

--------------------------------------------------------------------------------
Document ID# 1797239

4rotorCorvette

04-03-2006, 06:00 PM

Anyway not all trucks in the effected vin number had the problems, I think it was only a few. I would still like to know the actual cause for the melting tips on the trucks that were repaired.

Thanks to everyone on the site with all the great info and heads up information. :ro)

Correct. GM found the earliest and latest VIN that had the problems. Does not mean all VINs included in the range have problems. Each individual part comes from a different place and time so it is difficult to track down the plant and batch that is bad, therefor many trucks that don't have problems will be recalled anyway.

MRTruck

04-03-2006, 08:57 PM

Thanks Max and everyone on this forum. I took my truck in Friday and the Service Manager did not know of a recall until I showed him the paper work from here. He asked me to bring my truck in Monday morning so I did and it was ready by lunch time. Once again I want to say thanks to everyone here.

tettruck

04-04-2006, 12:28 AM

I talked with my service advisor today. My new 06 LLY VIN falls after the range stated. When he put my VIN into GM VIS, it came up clear -- no recalls--. OK, that makes sense, since my truck is out of range. He also said that they could hook it up and check for the current update, but that would take 30-40 minutes, and the cost would be on me. He, and the service manager assured me that my vehicle would have received the update at the factory, especially since my VIN is about 10,000 pass the range cutoff. Also, if any NEW recall comes out, including my VIN...well.. of course, they would perform the work, per GM spec.

Can't say I'm surprised. Their reply is by the book. I'll be watching my glow plug light closely, and also watching this thread and other recall info.

Thanks all.

RichLockyer

04-04-2006, 12:43 AM

I think for those of us without a firm recall attached to the vin, it wouldn't be a bad idea for a friend with a Tech-2 to check it out and make sure it's current.... gotta' give the owners some time to download the updates though.

IIRC, there is a comment on the recall about the dealers making sure that the update is installed on all in-stock vehicles prior to delivery... not quite sure how to read that into a delivered vehicle like yours that wasn't truly in-stock, but very well may have been in-transit on the 24th.

I dunno... Personally, I don't think the dealer should charge you, BUT if you already do have the most current revision, I can understand the dealer not wanting to pay for the time.
I'd maybe have a chat (and a donut) with the service manager and offer to pay for the tech's time (can't imagine it would be more than $60) if in fact you have the most current update, and get him to agree to cover it under warranty if it isn't.
After all, you're saving him the possibility of having to do an engine replacement under warranty.

canadave

04-04-2006, 07:48 PM

Update done in 30 minutes,don't see any difference in the light time. Had them do an injector balance test, going in Friday for an injector.

dspears

04-04-2006, 10:20 PM

Had mine done this morning took 20 min. Can see no difference in the time on.

RICKYY

04-05-2006, 01:48 AM

Had mine done this morning, feels like I got about 10 more horsepower and the mileage is better, the trans shifts smoother (if that is possible) and I look better in it.;)

What a deal!!!!!

Rick

Eddysel

04-05-2006, 12:47 PM

Had mine done this morning. Took 30 minutes. Can't tell any difference. Dealer thanked me for relaying the info from this site to him. Thanks guys. I appreciate it as well.

Ed

craigaureguy

04-05-2006, 04:35 PM

4rotorCorvette

04-05-2006, 06:30 PM

Had mine done this morning, feels like I got about 10 more horsepower and the mileage is better, the trans shifts smoother (if that is possible) and I look better in it.;)

What a deal!!!!!

Rick

Funny, and not to mention it sounds better too without the GPs flying around in the engine and all. :)

4rotorCorvette

04-05-2006, 06:34 PM

I just got the recall notice for my LBZ and I am in Puerto Vallarta, Mexico. Went to the local dealer and called the customer service assistance here in Mexico only to find out that the computers here are not compatible with programs for vehicles like the LBZ that aren´t sold in Mexico. In other words Í have to drive back to Texas to get the reprogram done. Unbelievable!!!!
The question is, if I have a new updated glow plug module sent from stateside, is it plug and play or does the dealer still have to connect and do some other program changes after new module is installed?

Earlier GP modules are not compatible with programming. If you have never had a check engine light I would pull your glow plugs and see if they are burnt at all. If not, you should forget about the whole thing. You would have to have a GP module that is already programmed sent to you and then perform injector flow rate programming which is required after GP module replacement. Tech 2s and TIS software must also be up to date to be able to perform the latest reprograms such as this one.

tmims

04-07-2006, 10:14 PM

Just picked up my new 2006 LT1 LBZ crew cab duramax about two weeks ago. Everything working great, love the truck, this is my first diesel and I couldn't get over how great it pulled my camper last weekend. The Allison transmission breaking is great and the truck hardly knows my 6500lb camper is back there. Set it on cruise control @ 65 and it never down shifted from 6th gear to 5th gear except on one pretty long / steep hill. Definitely a different world from my gas burner experiences.
I've been reading about the Glow Plug recall, my VIN is within the breadpoint range. I call my dealer / service mgr, and asked them to check GM VIS to see if I need to bring my truck in. The service mgr said that my truck has no recall 's listed, I gave them the recall # 06522 and asked them to double check. My question is this, if GM VIS does not have my truck listed as needing the glow plug control module reprogram, can I rest easy, quit worrying about the problem and assume I'm good to go?

Tom Mims

RichLockyer

04-08-2006, 12:20 AM

I would at least have them pull it into the service bay and plug in the Tech-2... it will tell if you have the most recent revision installed. If not, you need it.

jeeptrix

04-08-2006, 01:35 AM

Called the dealer yesterday and had the work done today. All they wanted to know was the ID number, checked it on the computer and found the recall. Mine was the first one they had done but I was in and out in no time.

tmims

04-08-2006, 08:36 AM

Rich,

Thanks, I'll have them check it out with the Tech 2.

Tom

Zorba

04-08-2006, 02:12 PM

I took my LLY in and it needed the work done. 45 minutes later iwas out the door. At the least it willgive you peace of mind knowing you are not affected.

MAXMSCL

04-08-2006, 02:44 PM

Took mine in to my dealer today as an appt. they had me in and out within an hour. I feel much better now that is completed :D

TBRDUC747

04-08-2006, 09:23 PM

I had an appointment with the dealer on Friday. They fixed my camper mirror and did the recall for the glow plugs with no questions asked. They had been booked so they asked me to leave the truck and it was done by 2:00 pm. On Wednesday I had stopped and asked about the recall they looked my truck up in the system and the recall for the GPCM came up even though I had not received any notification from GM. I got more push back from GM when I had called them the night before to check on the recall than I did from the dealer. They gave me a ride to work and then had someone pick me up.

I am enjoying my truck.

CRICKEYDOG

04-09-2006, 12:05 PM

I've heard of a recall for the 2006 LBZ D/A referred to as a "GCPM" recall. Anyone heared of this and what it is? I just heard about this yesterday (Sat) and the service dept at the dealer was closed. thanks in advance.

Truck on!!!:cool:

CRICKEYDOG

04-09-2006, 12:10 PM

I haven't been on the forum in several weeks and posted the above "GPCM" recall question before I read further through the forum. :duh: :duh: :duh: :duh: :duh: A thousand pardons.

Truck on!!!:cool:

duramex

04-09-2006, 12:51 PM

:hug: Thats okkkkkk):h

04lly73

04-09-2006, 12:55 PM

Does anybody know what changes are made to the glow plug module during the re program? Just curious as to what kind of changes that are being made during this process.

blizzardplowman

04-09-2006, 12:58 PM

Your forgiven, this time:lol:

dogzapper

04-09-2006, 01:06 PM

I can't answer that, but I have a silly comment to make.

My LBZ was getting about 13.5 mpg to 14.0 mpg (all city) previous to having the GPM reflashed. After the reflash, I've burned two tanks of diesel fuel from the same Chevron station and my mileage has shot up to a an average of 17.3 mpg. Not only that, but it seems like I have more pure-guts power (as if the stock LBZ needed any more.)

Coincidence? Probably. But I'd like to hear of any of the other DieselPlace Forum members have had the same experience. Just curious.

Steve

Kemosabe

04-09-2006, 01:30 PM

Hi guys.

Just had mine done... Everything fine... Don't "See" any difference... Don't "Feel" any difference... Will check mileage on next refuel.

Truck runs great. (Of course) ):h

Riccas

04-09-2006, 01:49 PM

I have also noticed an increase in fuel economy. I have only burned threw one tank so far, but i had not reset my MPG counter sinse before my last trailring trip (was arround 11 mpg) i looked at it yesterday and it was arrond 14... must be getting some impressive numbers to have offest the average 3 MPG in only 1 tank. I'll reset and report back... looks like this reprogram is worth the trip down to the stealer!!!

a78turbo

04-09-2006, 02:09 PM

The glow plug control module also contains injector calibration files along with the ECM. If one fails, the truck will use the calibration in the other to keep running until repaired. That is some of the things that make to 06-up harder to add power enhancements to.

MKAH

04-09-2006, 02:48 PM

It may be that the truck is getting broken in or it may be that it is my imagination or just maybe the glow plug flash update has had a positive effect on my fuel economy by about 1.5 MPG both city and highway. Anyway, I am getting better milage now than I was prior to the update.

Hum?

;)

Joey D

04-09-2006, 03:20 PM

Summer fuel is hitting the pumps as well so maybe thats it.

RichLockyer

04-09-2006, 03:28 PM

Summer fuel is hitting the pumps as well so maybe thats it.
Ditto...
Had both recalls done on my '06 LLY, GPCM and general PCM and no change in MPG. We don't get winter blend in Los Angeles.
The recall was issued on 3/24, and I think summer blend starts hitting the pumps around the 1st in the lower lattitudes.

Extended warmup from colder weather, etc.... it's hard to accurately attribute 2-3mpg in just a couple of tanks unless you keep good records (http://personal.linkline.com/rlockyer/2500Gas.xls).

RayMich

04-09-2006, 07:09 PM

I had mine reprogrammed on March 27th and after running around 400 miles, I've noticed NO change in power or MPG.

Big Jack

04-09-2006, 08:03 PM

I have noticed that it feels like more power but my mileage seems to be worse.:(
I haven't run a full tank since the reflash so there could be other things affecting the mileage.

geabis

04-09-2006, 08:59 PM

dogzapper

04-09-2006, 09:14 PM

I'm going in tomorrow and i am currently seeing 12-13 mpg. i would give my left arm to see 15 or 16. i hope it works the same for me.

Friend Geabis,

I really didn't believe it at the end of the first tank. Then, the second tank gave identical results, so it wasn't a "short fill." Now, I'm starting to believe.

Actually, I'm now getting in the city what I got with the first couple of tanks in totally freeway driving. Sooo, either the flash did something, or maybe it's a seasonal change in fuel (the pump at my local Chevron simply says "Diesel No. 2), or maybe the engine is "wearing-in." BUT, the better mileage happened suddenly, and at the precise time of the reflash.

At this point in time, I would be very interested in seeing what my new baby will do on an extended freeway trip...like lots of sixth-gear. I'm thinking 21 mpg would not be too greedy.

Heres hoping YOU get the same mileage results from the whatever. You are pushing a pair of extra tires, so it may not be as dramatic, but anything is better than nothing.

Steve

2006sierra

04-09-2006, 09:18 PM

I have noticed it too. I thought maybe it was because I was running on "performance" setting. I don't think we are on summer fuel yet - although it was over 60 here today it was only 25 degrees last night. I had the flash last Friday, then installed the program.

endoquest

04-10-2006, 12:36 AM

Called my dealer two days ago and set up an appointment after reading this post. Got the recall notice in the mail yesterday. Good work Diesel Place. Thank you.

I have 6500 miles on and no problems. Cheers

endoquest

04-10-2006, 12:45 AM

I'm currently getting 11-12 mpg using tow/haul w/ 15,000 lbs all the time. I'm scheduled for the reflash on Wednesday and I'll compare calculated mileage the following week. We are also switching to summer fuel here in Oregon.
Cheers

Drider

04-10-2006, 01:59 AM

hmm, my LBZ vin# ends with 6f219930... it doesn't fall within the recall vin#s. Does that mean my car is OK? on a side note i've got 888 miles on it and it averages 15.9 MPG. calculated by myself, not by the on board computer.

Year
Division
Model
From
Through

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

RichLockyer

04-10-2006, 02:18 AM

If you took delivery before 3/24, or if you bought it from dealer stock, I would ask the dealer to verify that you have the most current updates.

Drider

04-10-2006, 02:36 AM

If you took delivery before 3/24, or if you bought it from dealer stock, I would ask the dealer to verify that you have the most current updates.

We picked the truck up on 3/30 the truck had just arrived on the dealer lot on 3/24. We were waiting on a custom order truck but this one came up at another dealer and we got it! I'll ask the service dept. when we get our tonneau cover installed.

gman

04-10-2006, 09:54 AM

Has anyone in the Tampa/ St Pete area had the 06522 (GPCM reflash) performed? I am getting the "Wait till you get the notice in the mail" line from everyone I call. PM me if you have had any luck.
Thanks in advance.

Max Payne

04-10-2006, 10:27 AM

What is your VIN#? Perhaps if you brought them a VIS showing the open campaign they will perform it. They should have ran a VIS to verify the campaign when you inquired about it. The notice you might get in the mail is not required.

Has anyone in the Tampa/ St Pete area had the 06522 (GPCM reflash) performed? I am getting the "Wait till you get the notice in the mail" line from everyone I call. PM me if you have had any luck.
Thanks in advance.

gman

04-10-2006, 11:19 AM

Rcher

04-10-2006, 12:37 PM

VIN is 6F101217, so it definitely falls within the range. Problem is, everyone tells me that they're waiting for parts (b.s.), wait till you get the notice in the mail, it doesn't start until 6/24, we haven't had anyone else come in for that... and the list goes on.
I've cantacted every dealer within 50 miles of here and it has been the same response from all of them. Even went to the Med. Duty dealer- same results.

And this is all total B.S. Here's what I would do, copy/paste the bulletin in this thread into a word.doc, print it out and physically take it to the dealer and plant both feet on top of the service managers desk (arrest may follow) until they do it. It takes all of about 30 mins and no parts are req'd.

I cant believe how many dealers are refusing to do this simple program update!! They must be "knuckle heads".

geabis

04-10-2006, 01:23 PM

had the re-flash done today at a dealer near me (not he dealer i purchased the truck at either, That dealer is an hour and half drive from me).

the service writer that made the appointment for me tried to send me to their truck center on a different date couldn't get it in at the truck center today (he didn't realize it was a diesel dually. wander how many GP re-flashes they are doing on new Envoy's:lol: ). after a talk with the service manager he said it would be no problem for them to do the re-flash there (after all its just a program that is uploaded from a tech2). now I'm on my way again.

we will see if i get any better gas mileage. I sure hope i do. other wise this truck is going to traded.

michbritt

04-10-2006, 01:28 PM

I had mine done a couple of weeks ago. No difference. Doesn't drive different, and fuel economy is exactly the same as it was prior to the reflash of the GPCM.

RichLockyer

04-10-2006, 01:37 PM

VIN is 6F101217, so it definitely falls within the range. Problem is, everyone tells me that they're waiting for parts (b.s.), wait till you get the notice in the mail, it doesn't start until 6/24, we haven't had anyone else come in for that... and the list goes on.
Like I said in another thread... if they are going to play stupid, print this out and bring it in: http://www.alldata.com/tsb/General-Motors/1143187200000_1143792000000_06522/index.html

And even though it's a PITA to get the '06 VINs listed on www.mygmlink.com (http://www.mygmlink.com) I would still make the phone call or send the email to get them to do it. That will give you a page from GM that you can take to the dealer and shove in their face.

http://personal.linkline.com/rlockyer/recall.jpg

The Joker

04-10-2006, 02:34 PM

Yeah I called my dealer today about mine and he said he hasnt heard of such a thing. Then I told him to look up my vin and wow there it was. They cant get to it this week, but I will have it done on next Monday.

endoquest

04-10-2006, 11:28 PM

I drove into my dealer today and had it done in 20 minutes without even pulling into the garage. The tech didn't even open the hood.
It would seem that if anything was wrong with the truck it might have taken longer.
Truck is running great so far. Cheers

mt1949

04-11-2006, 12:21 AM

Took my 06 3500 SW 4x4 in today for the reflash, took a copy of this report with me and had it done in about thirty min. Truck is only two weeks old with 1500 miles. Glad I had it done before any damage.

mcnwil

04-11-2006, 08:04 PM

Got my 06 2500 done today, Completed in 30 minutes. The truck has 1000 miles now, everything seems the same, running great!

gman

04-11-2006, 11:52 PM

Score!!!

Went to the dealer down the street from me at work during lunch today armed with #06522. 20 minutes in and out, even with the dumba$$ porter locking my keys in the truck.
Thanks to TDP for info and support!!!

4mydiesel

04-12-2006, 10:15 AM

Took mine in today in and out 28 mins.

Viper927

04-12-2006, 09:24 PM

Does anyone know if this reflash of the computer detunes it? Or has anyone noticed any decreases in power?

epd

04-12-2006, 10:02 PM

i was wondering the same thing, mine seemed to have a little less power after the reprogram. maybe a tech can chime in and let me now if its possible to lower the horsepower output somehow using that tech2 inst.
on a LBZ engine, thanks for any info.

4rotorCorvette

04-12-2006, 11:00 PM

I had the reprogram done on the truck and it SEEMS noticably slower. I am very skeptical about any loss of power because:

1. As a GM tech I am not aware of any detuning or loss of power
2. It is very likely that I am "used" to the truck's power
3. I own other faster vehicles (daily drive a 13 second Syclone)

To satisfy my curiosity(/paranoia), I will have to take it to the drag strip to see some real numbers. My truck has run 15.1 @ 86 mph stock and it currently has a full exhaust and Bully Dog on "Economy" setting. In my opinion if it runs a high 14 then something may be wrong but not too bad, mid 14s would be a great result, and if it runs low 14s (very very unlikely), then I am full of crap and need to let my Wife have her truck back.

Will keep posted, I wouldn't worry about it too much or else it could be the next wave of rumors and fears like the glow plug deal. I think we're just getting used to our trucks. (I will check the injector balance though ;) )

epd

04-12-2006, 11:19 PM

thanks 4RC, ya its probably just me, i get nervous when they take my truck and start reprograming stuff, ijust thought there might be a way to change hp settings some where in the comp. but thanks for the info.

Rcher

04-13-2006, 01:35 AM

Well maybe this could be my imagination running away, but my trucks acceleration seems to be more responsive since the GPCM reprogram. Not faster, just better response from the accelerator pedal. :think:

Thomas Manfred

04-13-2006, 03:37 AM

Hi all I had both 06522 and 06504 done last week. I think truck may be more responsive.
This a Great Group! Tom

06 lly CC stock

4rotorCorvette

04-13-2006, 07:07 AM

Once again there is no direct way to affect horsepower or performance from the Tech 2. It allows us to program the various modules. I could imagine affecting performance if the transmission shift program was recaliberated or perhaps fuel delivery in the Powertrain Control Module, but the Glow Plug Control Module only affects glow plug operation. I can't see it having an effect on performance after the truck is fully warmed up.

geabis

04-13-2006, 12:17 PM

4rotorCorvette

04-13-2006, 12:40 PM

Correct. Info can also be retreived from each individual injector in case there is no communication with the modules.
I am going to dyno my truck tomorrow. Hoping for around 360 rear wheel hp.

1lbz4me

04-13-2006, 05:08 PM

Like I said in another thread... if they are going to play stupid, print this out and bring it in: http://www.alldata.com/tsb/General-Motors/1143187200000_1143792000000_06522/index.html

And even though it's a PITA to get the '06 VINs listed on www.mygmlink.com (http://www.mygmlink.com) I would still make the phone call or send the email to get them to do it. That will give you a page from GM that you can take to the dealer and shove in their face.

http://personal.linkline.com/rlockyer/recall.jpg

I don't see anywhere in the service recall to check the glow plugs for damage while doing the reflash. Has anyone checked the glow plugs when they have had it done? Are they about to fail or perfect condition?

The dealer I bought from has changed several vehicles with G/p failure but only one of the eight glow plugs failed on each. The other 7 were also trashed and were difficult to remove. They would recommend inspection of the glow plugs to make sure they were not about to fail.

How about an update GM!!

Mr smith

04-13-2006, 06:20 PM

I must say at least GM is on top of it..Ive had my '06 less than a month and I got a recall notice in the mail today on the GPCM. Woulda been even better if they could have done the reflash during my PDI. Oh well at least they were quick to get the paperwork out to me.

RichLockyer

04-13-2006, 06:44 PM

blizzardplowman

04-13-2006, 09:30 PM

Got my "recall" today, had it done a while ago but nice to see a fast notice on GM's part.

Diesels_n_Poker

04-13-2006, 11:29 PM

The recall repairs were completed yesterday as an added bonus (they were replacing my torque converter). Didn't even realize the truck needed it. So far so good.

Henna Chevrolet; Austin TEXAS. Nice folks...

dmaxscott

04-14-2006, 10:23 AM

Called Woodfield Chevorlet Thursday morning, set up appt for Friday 7:30. They took the truck at 7:45 and I was on the road by 8:15. I love it. That is how service should be.

Great service this time and I am glad GM got on the recall ASAP. That is how it should be also.

firemed530

04-14-2006, 09:25 PM

I am going to have mine done this coming week. I will let you know of any changes as well

4rotorCorvette

04-14-2006, 09:53 PM

If the glow plugs were damaged, you would see a CEL/MIL light.
The damage would impact the current draw, which would throw a code.

4rotor... which tune level are you going to try?

Here's my '06 LLY on Performance:

http://personal.linkline.com/rlockyer/dyno.jpg

Cool, thanks for posting that sheet. I don't mean to hijack this thread so I will start my own regarding the dyno and the truck nationals I plan on competing in on the 23rd. Hopefully I can make 350 on Economy since the difference in the LLY/LBZ output is about the same as the difference between the Economy and Performance settings.

Back to the topic, I never bothered to check my glow plugs because I never got a related code (also I'm too lazy). The video I saw at work advised to remove and check plugs if a plug code was thown, and disassemble engine if the head was found missing. Remember also that differrent codes are thrown for differnt types of plug failures.

billr

04-15-2006, 07:09 AM

I received my recall notice in the mail yesterday for the re-program of the glow plug control module.
It will be going to the dealer Monday after work.

little white yj

04-15-2006, 08:30 AM

Thanks the the Forum i call my saleman and he set up an appointment to get mine done on Friday. Fraiday when i got back home i found the recall letter in the mail box .):h

Eric

gtncl

04-15-2006, 09:57 AM

Got notice in mail, called for appointment at 10:30AM, took truck in at 1:00PM. Had reprogram, free oil change, rattle fixed and free wash job done. On my way at 2:15PM.
Great service.

bcserl

04-15-2006, 06:37 PM

Made an appointment for the recall after getting my letter for the next day. Got the truck back 1.5 days after that. Good thing I didn't wait for it.

catch03

04-15-2006, 06:44 PM

had mine done yesterday and i was averageing 13.9 and now 17 made me smile and has not droped off in milage real happy with the reflash

4rotorCorvette

04-15-2006, 07:52 PM

Are you joking, or do you seriously think the reflash affected your mileage?
It has nothing to do with performance or economy. Any time you reset the ave. mileage you will get a drastically different result. Only break in and modifications can affect your mileage. Sounds familiar, I was getting 14 mpg @ 1500 miles, now getting 18 mpg @ 7000 miles. Hope to hit 20 mpg by 20k miles.

geabis

04-15-2006, 08:31 PM

had mine done yesterday and i was averageing 13.9 and now 17 made me smile and has not droped off in milage real happy with the reflash been getting 12-14 from day 1 and still getting 12-14 after reflash. no trailer no load just my fat a$$ to and from work

chevy max 06

04-16-2006, 07:57 PM

I had mine reflashed last Friday at the dealer I purchased it from in Pa. and towed my Jayco 5th wheel {7300 lbs. dry}to stay at a campground close by and got 11.6 mpg going and 11.6 mpg coming back today.

BIGR

04-17-2006, 08:50 PM

I just got my recall notice in the mail today. I had my truck reprogramed about 3 weeks ago. This time I felt like I had one up on GM, thanks to this websites great info about the glow plug issue.

:grd:

gghiaa

04-17-2006, 09:32 PM

had mine done today 20 to 30 min and "on the road again ":grd:

billr

04-19-2006, 06:57 AM

I had mine done yesterday afternoon. Took about 35 minutes.
Very knowledgable and friendly dealer.

RWH

04-19-2006, 09:11 AM

k1keg

04-19-2006, 09:57 AM

Just got my recall in the mail yesterday, the question is I have the Bullydog Power Pup programmer and have it set to level 2...Do I or Should I return the truck back to stock mode and give it a couple of weeks to clear the memory before I bring it in?

DEITZ

04-19-2006, 01:16 PM

Mine was done yesterday, dealer said they had to do an update to their system which caused it to take longer. Was at the dealer about 90 minutes.

Didn't notice any difference in how anything works on the 25 mile drive home.

I must have been the first recall at my dealer too. The dealer said it took a while to get the program downloaded into their programmer. I was there two hours. Likewise, I have not noticed any difference.

Rcher

04-20-2006, 02:32 AM

Do I or Should I return the truck back to stock mode and give it a couple of weeks to clear the memory before I bring it in?

You should definitely return the truck to the stock programming just in case. I see no reason to let any memory clear before you have this work performed. Just remove the BD program and you should be good to go.

k1keg

04-20-2006, 08:39 AM

You should definitely return the truck to the stock programming just in case. I see no reason to let any memory clear before you have this work performed. Just remove the BD program and you should be good to go.

That's what I figured...tnx for the info....

firemed530

04-21-2006, 07:10 AM

Had mine done tuesday. I am in Florida so i doubt there is any wnter fuel issue and i was getting 16.9 before and just 17.1 with the tank after reflash. So really no difference.

Drider

04-24-2006, 01:39 AM

update on my previous post... i brought in my truck for the tonneau cover and nerf bar installed. i asked the sevrvice consultant about the reacall. he entered the trucks VIN# and said there are no recalls for my VIN#. So this must mean my truck was reprogrammed from the factory?

driver2

04-25-2006, 03:39 PM

Got mine today and will get it done in the am.

driver2

04-26-2006, 03:24 PM

Had it done today.Took about 15 min.

rab986

04-27-2006, 12:48 AM

Ok... about 2 months ago my "wait to start" light came on at 75mph headin down the interstate. Didn't think much of it when it came on then about 10 seconds later I pulled over and cycled the key. Haven't seen it since.
This morning I was reading the forums, seen this post and realized I should take it in for the recall (guess I didn't get my mailer). After my call to the dealer to set up an appointment, I jump in my truck and start it. What the hell happens?!?! Check Engine Light comes on. Checked codes with my Bully Dog programmer and I have a p0401 (EGR), and p0671 through 678. All my damn glowplugs have a circuit failure. WTF? I was just a mile away from the dealer so I bring it in and drop it off. They act like no big thing... start it up and drive it right in. Oh well.... They gave me a car and told me they would have glowplugs in a couple days (another WTF?)

I'll chime in later when I get some more info. I just hope I'm not going to be added to the small list of engine teardown nightmares that I am hearing about.

P.S. Is this typical for a GM dealer not to have Glow Plugs for this thing. Is it a new plug for the LBZ or does my dealer have to put an order in for toilet paper every time they wipe their ***?

Later Mangs
Steve

Oh... build 11/05 with 10,200 miles on it.

kkirt1

04-27-2006, 04:01 PM

My Story:

I called my dealer, a Cadillac, Oldsmobile, Pontiac GMC dealer (why this is important later), last week about the recall. They had not heard about it. They said they could do it next week which was yesterday. Dropped it off yesterday morning for the recall and an oil change. Picked it up yesterday and everything seems fine.

This morning I get in the truck and turn the key. I see the glow plug light on the dash light up and wait and wait and wait.... wtf. I turned the ignition off. This just isn't right. It has to be 70% in the garage. Try again, same thing so I start it. The Glow Plug Light goes off but the CEL stays on.

Anyway, I drive it to the dealer and he said he would check it out. I went and talked to my salesman and he loaned me his car. A good thing about a Cadillac dealer - customer service. The bad thing is these guys don't sell to many diesel trucks.

The service manager called a little while ago and said they removed all of the glow plugs and they are worn. Luckily none of them broke off and shelled the motor. They will have to be replaced. Great, now I will be driving a rental over the weekend. I hope the rental agency likes turkey blood in the back seat :) Turkey hunting started this week.

My question is, could they have done something to the programming to screw it up. They admit they don't work on a lot of diesels. Great service but...

rab986

04-27-2006, 06:15 PM

Oh.... no more crappy experience stories. It just makes me sit here and worry as I wait for my truck. Atleast I got a car to drive but this damn malibu is going to look funny when I try to use it to pull my 24ft box trailer this weekend with a 4300lb Impala stuffed in the back of it.:(

06DMAX00CAMSS

04-27-2006, 10:00 PM

I have a '06 Chevy LBZ 2500HD and got a recall letter from GM stating I need to take it in. I didn't read into this thread as it has way too much info in it for me. So my question is, do I take it in? If so, just let them take care of it or do I need to specify something to them about the reflashing? I don't have any problems as of right now, do I take it in anyway?

kkirt1

04-28-2006, 01:05 AM

I went and picked up my "rental" tonight. They gave me a blazer... at least it wasn't a Mailbu :) When the rental guy was walking me around the car my salesman walked by and joked - for the kind of money you spent with me they should have put you in a cadilac. Ha!ha!ha!

The service manager did show me a glow plug that came out of my truck. It looked like it was ready to crack. I'm wondering if the short amount of time it was on this morning did that damage or did I just get lucky and the cel came on at the right time.

Oh well, I'm driving the suv :( this weekend. Hopefully GM will expidite the new glow plugs.

luckymick

05-03-2006, 12:08 PM

Completed my reprogram today. In the 20 miles from dealer to work there was no change in truck characteristics. Dealer took 30 mins from check-in through delivery. If you haven't done the reprogram yet I would recommend getting in to your dealer!

SSTuner

05-03-2006, 06:44 PM

Had reprogram done yesterday. I noticed this morning that the dash "coil" light illuminated for only about one second. Before it was on for approximately 3 seconds.

jdk

05-06-2006, 12:41 PM

I had mine done today, but the description is "GLOW PLUG SLOW OPEN CONCERN REPROGRAM GLOW PLUG MODULE" .. This discription is deceiving however the code is still 06522 so I assume it's the right one, correct?

rab986

05-18-2006, 11:52 PM

kkirt1

05-19-2006, 09:03 AM

Sorry it took so long to get back with what happened to my truck. All good news though. Even though all 8 glow plugs were bad.... none of them had the tips melted off. Replaced the GP's, reflashed the computer and the GP module and the truck is running as good as (maybe even better) than new. All of that stressing over nothing.
Now my damn 4X4 light doesn't come on though. That's why I'm back on here though.

Later
Steve

I got my truck back last week. Now it sounds like there is an exhaust leak. I took it to another dealer and he couldn't hear it until it warmed up. Their tech stuck his head in there but could not determine where the noise was coming from although he did not think it was an exhaust leak. The service writer told me to drive it for a few weeks and see what happens. Whatever...

RiverRatRusty

05-30-2006, 06:47 PM

My dealer wants 2 hours to do it while I wait. He says that's how long it takes to program the truck.

RichLockyer

05-30-2006, 07:41 PM

SS Crew

05-31-2006, 12:04 AM

BS
45 minutes max.

Call Rancho Valley Chevy in Pomona at the 71 at Rio Rancho near the 60.
I walked in unannounced (holding my printout from mygmlink.com) and total downtime was less than 90 minutes.

Stay away from MK Smith in Chino, the last time they had my truck they ran my front bumper into the wall, (I've got an SS facia on my truck). Yeah, they fixed it and a ding in my hood and did a terrible job, they got overspray on my wheels and windshield, had runs on the edges of the hood. I had to polish out my wheels and claybar my windshield. They said that they'd fix it, but I don't want to take it there again to their body shop - bad news!

When one of the kids on the street dings it with a baseball or I get another rock thrown at me from our wonderful freeways (gravel trucks) here in So. Cal., I'll take it to a good body shop here in San Dimas.

RichLockyer

05-31-2006, 12:46 AM

Ya... years ago I got nailed in the right fender in my '94 Toyota p/u (that I bought from MK).
They masked over the OEM striping tape and repainted the fender, leaving a very noticeable ridge at the edge of the tape and making it forever impossible to remove the factory striping.

The horn they installed lasted a grand total of 3 seconds and then nothing.
Checked power, no problem, not the fuse. Replaced the stock "toot toot" with a set from a Mercedes.

westdrz

06-13-2006, 06:30 PM

I had the reflash done in April with no problems, towed my trailer 1500 miles since then. Today the check engine light came on, drove it to same dealer. He says he has seen this happen to a few trucks after the reprogram, some kind of ECM timing module thing-a-ma-jig. He drove it back to pull the code, tech said he knew what to do. Waited 1/2 hour and it was fixed, don't know what exactly they did, I'll check the paperwork later but I doubt it says much. Anybody else had to take theirs back after the first reflash? Oh yeah, it's an 06 LLY/Allison.

Bill.

KYDuramax

07-02-2006, 05:29 PM

Thanks for the heads up on this. I just bought my truck 13 days ago and I saw this post and sure enough my VIN fell in the range listed. Called my dealer Saturday and he verified that my truck does have the recall so I am scheduled for service tomorrow morning.

I am curious why it wasn't fixed before I bought it since it looks like this has been known since at least as early as March of this year. Oh, well, at least it will be fixed tomorrow.

I am leaving this Friday for Myrtle Beach with a 27' TT so it is good to know that this will taken care of before the trip. Wouldn't have been possible without this forum so thanks a bunch.

KYDuramax

07-04-2006, 06:15 PM

OK. Had mine done yesterday, they marked it as Recall 06522 Reprograrm Glow Plugs. It took about an hour but they also did another recall 05086 Power Steering Hose. I sure feel better now that it's done.

DJFriar

07-06-2006, 07:13 PM

I picked up my truck yesterday, called them today and the recall had not been done. I have an appt. for the 13th of July @ 9am.

RichLockyer

07-06-2006, 10:05 PM

Try a different dealer.
This recall takes less than an hour... on an "off" day you should be able to arrive unannounced and have it done while you wait.

DJFriar

07-07-2006, 12:12 AM

Try a different dealer.
This recall takes less than an hour... on an "off" day you should be able to arrive unannounced and have it done while you wait.

Not sure who this was too, but if it was me, it was only the 13th cause that's the next day I have time to run in. They offered me to come in right when I called at 4pm and they'd have me out in about an hour she said.

RichLockyer

07-07-2006, 10:44 PM

Okay.. that's different.
We've had a lot of people told various things by dealerships, including "the parts won't be here until June"... uhh... what parts? :D

5erDriver

07-07-2006, 11:37 PM

Just want to say thanks to this forum. I purchased an 06 LBZ on July 4, joined this forum the same day, and found the information about the glow plugs. My truck had been on the dealer's lot for awhile, and my VIN fell within the recall. Took back the truck on July 5, and the dealer was apologetic for not doing the reprogram in advance. They had me in and out in 45 minutes.

SLOWPOKE96Z28

07-07-2006, 11:51 PM

as seen earlier in this post, if you have a MyGMLink account, it will alert you to any open recalls concerning the GM side of the vehicle. its easy to set up and well worth it. think of it as a free new e-tool for your toolbox.

jake69chevy

07-11-2006, 05:49 PM

I am confused on that VIN posting in the recall Can someone check my vin and see if I need this flash done? thanks
I have a 2006 GMC 2500HD LLY Allison crew cab VIN 1GTHK23266F108697

gaptapzap

07-11-2006, 06:41 PM

yes, needs flash done...

SLOWPOKE96Z28

07-11-2006, 08:21 PM

i guess no-one signed up for my gm link. its tells you exactly what recalls apply to your vehicle. just trying to help.

DJFriar

07-11-2006, 08:35 PM

i guess no-one signed up for my gm link. its tells you exactly what recalls apply to your vehicle. just trying to help.

I tried to signup, but it says "if your vehicle was purchased in the last 60 days, it will not be in this system. My truck is only a week old, so I have to wait. :(

RichLockyer

07-11-2006, 10:05 PM

MyGMlink is slow... painfully slow... especially at getting the '06 VINs into the system.

One email is all it takes to get activated.

jake69chevy

07-12-2006, 03:17 PM

my truck is only 3 days old! sorry...

DJFriar

07-12-2006, 05:43 PM

MyGMlink is slow... painfully slow... especially at getting the '06 VINs into the system.

One email is all it takes to get activated.

Are you saying if we email someone we can get added faster or ???

RichLockyer

07-12-2006, 11:42 PM

Are you saying if we email someone we can get added faster or ???
Took me just over 24 hours to get added a week after I bought my truck.

DJFriar

07-13-2006, 03:16 AM

Who do we email and what info do we need to send???

RichLockyer

07-13-2006, 03:30 AM

Who do we email and what info do we need to send???
Use the contact information on the web site. All they need is your VIN.
Just let them know that your VIN is not in the system.

Silveradogs

07-14-2006, 03:29 PM

Done today! No Sweat.

DJFriar

07-15-2006, 10:16 AM

Got the flash doen Thursday, took all of 20 minutes.

duty494

07-21-2006, 12:02 AM

i just bought a 2006 silverado 2500hd duramax and i have never seen the wait to start light come on. when i brought it in to the dealer they told me that was normal. any opions???

RichLockyer

07-21-2006, 12:37 AM

Depends on outside air temps.
I haven't seen mine come on since late June.

DJFriar

07-21-2006, 01:49 AM

I've never seen mine either, but I've only had her 15 days.

Maxdmax

07-21-2006, 02:17 AM

Same here...check light came on the other day then went off. I thougth it was because of my exhaust setup, but I better check my vin tomorrow.

I've never seen mine either, but I've only had her 15 days.

RichLockyer

07-21-2006, 02:38 AM

Scan it... the code will be stored for a few restarts.
Find out the code then post it. An EGR code is not a problem. A Glow plug code can be a BIG problem.

NCexRider

07-29-2006, 11:10 PM

I bought my Duramax in January and still haven't had the recall service. I plan on taking it in Monday morning. Have I damaged anything by not having it done yet? It has 3000 miles on it.

RichLockyer

07-30-2006, 01:23 AM

If there were any damage you'd have a CEL.

Allimax

08-08-2006, 08:10 PM

I just bought my truck two weeks ago. Since the recall was already in place should I assume the dealer took care of this for me.

kkirt1

08-08-2006, 08:50 PM

I just bought my truck two weeks ago. Since the recall was already in place should I assume the dealer took care of this for me.

I say no! Assume nothing at a stealership. If they did not take care of it you could be out of your new truck for weeks waiting on a rebuild when a piece of broken off glow plug shells the motor.

RichLockyer

08-08-2006, 10:08 PM

Have the VIN checked for a build date. If it was built after the middle of April, it would have been done at the factory.

intimidatorjr

08-09-2006, 09:38 PM

Well I took my truck in to the dealer and even though my vin falls within the vin beakpoints I was told it didn't need the reprogram. When I asked why they said a VIS was run and come up clear. I called GM and after about 45 minutes on the phone they told me the same. They said that not all the trucks between the numbers on the list will require the upgrade and mine didn't. Then I was told to run it and if I have a problem then bring it back in. Right now I'm at 7100 on the odm and so far so good. Also mileage is not bad either 16.8 in town and 19.6 highway going about 80-85

It smells like its burning

08-27-2006, 10:25 PM

Just got mine done on Saturday.

Hagie

08-27-2006, 10:34 PM

I did my own reprogram on Saturday. There is no difference in the truck's behavior, as the GP light never comes on and it didn't before either. The reprogram doesn't eliminate them, just "improves their operation". The knocking sound we hear at idle is the oil pressure slapping against the side of the engine. It has baffled and worried a lot of people although it's normal and does no harm.

The LBZ is beast. I really love the way it runs and sounds. I estimate mine has 400 rear wheel horsepower and all it has is an Airaid intake and an MBRP catless exhaust with the BD Power Pup on Tow/Economy (!!).
We are getting 18 mpg in the city !!!
Hey 4rotor,
When you did the reprogram did it affect the Bully Dog program? Or is it two completely different things? I run the BD Pup on econo also but I'm only getting about 16 - 17 mpg and I don't hotrod it. I wonder if I took it to the dealer with the Bully Dog program running could they reprogram the module without disturbing BD?

RichLockyer

08-27-2006, 10:46 PM

Remove the program before taking the truck to the dealer for any reason... any dealer reflash will wipe out your program and leave your programmer locked out. Even if you're going in for an oil change, a TSB or recall may surface that you weren't aware of and a decent dealer will take care of it while you're there. They'll mention it to you, but at that point it's a little uncomfortable to have to say "Hold on, let me plug my little black box in for a minute..." :)

After my reflash, my programmer reported "Part number not found"... an update downloaded from BullyDog took care of it.

Ruben Z

09-03-2006, 11:28 AM

Not sure if this has been posted before, but a 07 classic should have this fixed from factory right?

RichLockyer

09-04-2006, 01:00 AM

Any truck that left the factory after the first week of April '06 should be good to go.

Don't worry... there will be other issues requiring reflashes on the '07s :)

duramaxuribe

09-10-2006, 05:30 AM

ok so im new im still trying to figure this out. but about the glow plugg recall would i fall in that catigory. 6f135826

RichLockyer

09-10-2006, 01:37 PM

ok so im new im still trying to figure this out. but about the glow plugg recall would i fall in that catigory. 6f135826

2006
Chevrolet
Silverado
6E100002
6E232880

6F100001
6F218045

Yes, you do.

Abugarcia

10-02-2006, 09:56 PM

RichLockyer

10-02-2006, 10:16 PM

That does sound excessive.
Longest mine has EVER been on is about 5 seconds, and that was after sitting for 24 hours and ambient temps were in the 50s.

With ambient temps in the 70s or 80s, the light does not come on at ALL if the truck has been driven within 8-10 hours.

DJFriar

10-02-2006, 10:16 PM

I had mine reflashed today. Before the reflash my light would stay on for 13-15 seconds and nothing changed. I am a new diesel owner, but this seems excessive. My dealer said everything was operating as intended. Does this sound odd to anyone else?

What's the outside temperature??? Mine doesn't even turn on unless its under 80 outside, and the most its been on is probably 2-3 seconds. But then its yet to go below 67 here either.

Abugarcia

10-03-2006, 11:12 PM

Most morning its around 50 degrees out. After I drove my truck home from the dealer yesterday, I shut the engine off and cycled the key forward and the light stayed on for 13 seconds. The chime only lasts 5 seconds but the light stays on much longer.

I only have 2800 miles on the truck but I don't see why that would adversly impact wait times.

Do you guys think I need a new module?

craigaureguy

10-03-2006, 11:15 PM

I am supposedly on the recall list but am in Mexico so no way to get back to the states to do the flash. When I first brought the truck down here new was back in January when we have below 70º mornings. Then it came on for max 2 seconds. Now in the summer with 84º plus mornings it never comes on at all.

DJFriar

10-03-2006, 11:33 PM

RichLockyer

10-04-2006, 01:33 AM

Abugarcia

10-04-2006, 08:48 AM

:iamwithst
It should not come on AT ALL after you've run the truck up to operating temperature even if it's 40 below.

You are getting a chime with yours? I'm not... just the light.

You don't have a check engine light, do you? Maybe run it to Autozone and see if there are any stored codes.

Yeah I have a chime for the fist 5 seconds after I turn the key and the light stays on for 13 seconds. Just to make sure, the wait to start light is the check engine light during startup right? It consistantly goes off 13 seconds after key on and I never see it while I am driving.

kkirt1

10-04-2006, 09:17 AM

Yeah I have a chime for the fist 5 seconds after I turn the key and the light stays on for 13 seconds. Just to make sure, the wait to start light is the check engine light during startup right? It consistantly goes off 13 seconds after key on and I never see it while I am driving.

No, the wait to start light is to the left of the cel. It it three squigly (sp?) lines that look like a heating element.

RichLockyer

10-04-2006, 11:29 AM

The chime is probably because your seatbelt isn't fastened yet.

The CEL is normal until the engine is actually running... I'll look at mine when I leave in a few minutes and see if it goes off by itself.

It sounds like your truck is normal. The GPCM activity light is a small "coil" symbol next to the CEL.

Abugarcia

10-04-2006, 11:18 PM

Thanks for the assistance. I guess my salesmen really didn't know what he was talking about. It is a relief to know I don't have any problems though.

RichLockyer

10-04-2006, 11:33 PM

I normally start the engine as soon as the WTS light is off, but this morning I turned the key on and just watched it.

WTS was off in less than 3 seconds.
Padlock (security) was off in about 5 or 10 seconds.
CEL went dark after at least 13-15 seconds.

I haven't had any chimes at all since installing my aftermarket stereo.

Sounds like your truck is normal.

Abugarcia

10-05-2006, 09:21 PM

At 38 degrees my light was on for 3-4 seconds. I maybe saw it on for a second the rest of the day.

MadMaxMike

11-01-2006, 10:09 PM

New here but will be a regular from this point on...
My '06 CCSB 4x4 goes in tomorrow AM to have the glow plugs replaced under warranty. My dealer had the truck since January, did the reflash in April and I bought it July 1st but I just recently started getting p0671-0678 codes. They said theyre just gonna replace the GPs under warranty. Ill let everyone know what happens...Mike

Oh, this site ROCKS

kkirt1

11-01-2006, 10:35 PM

Ask them to see the ones that are coming out. If for nothing else than peace of mind.

056600

11-17-2006, 08:56 AM

Did they iron this Glowplug problem out for the 2007's?

johnniev57

11-29-2006, 12:44 PM

Another newbie here.......
I just called a dealership by me today they said mine was done before I bought it. Could that be? The stealership I got it from didn't even clean the thing when I picked it up. I wouldn't think they would take the time to do the reflash..........
The guy just asked for the last 8 digits of my truck and then put me on hold for a minute and then came back and said, "yes there is a recall but it has already been done". Hmmmm
Would I be able to notice if they didn't do it? I get a little over 16 mpg on my truck but that is with the H2 wheels on it.................

RWH

11-29-2006, 03:37 PM

....The guy just asked for the last 8 digits of my truck and then put me on hold for a minute and then came back and said, "yes there is a recall but it has already been done". Hmmmm
................

Stop by the dealer and ask them to give you a print out of their computer system indicating your truck was done.

RichLockyer

11-29-2006, 10:39 PM

Dealer stock was SUPPOSED to be updated, but that doesn't mean it was.
There are actually two recalls on the '06 LLY.

Stop in at a different dealership on a slow day (like Wednesday mid-morning) and ask about it. If it was done, it should be in GM's computer, but it wouldn't hurt to ask that they plug it in and verify.

Ozmindes

01-17-2007, 12:45 AM

Hello All
I have an 06 dually Purchased new in Nov. 05. I absolutely love the Truck. All it wants to do is Pull. I had the recall on the Glow Plugs taken care last summer and the EGR valve crapped out in October 06., that was repaired. I have 27K miles on the truck and thats pulling a 30' camper. The camper allways has at least two full dresser motorcycles in it and the Truck handles it just fine. To date as i said i am very happy with Truck. I have pulled that camper with the Truck from from Southern New England to Nova Scotia Canada with a single problem. Just adding my two cents thanks for listening.
Ozmindes

bcombs21

03-21-2007, 12:17 AM

Is there an issue with the 07 Classic LBZ motor?

RichLockyer

03-21-2007, 12:54 AM

No... the fix was effective on factory production around Feb 28 '06.

bcombs21

03-21-2007, 10:03 AM

Thanks Rich, I really appreciate it. I pick up my 07 classic truck today. Any advice? I don't want to spend a lot of money on extra's that I don't NEED at this point. I am planning on getting an egr blocker and fingerstick and a nicktane filter. Edge chip & Exhaust when the bank account recovers. Any other Necessities?

smokin139

04-29-2007, 11:39 PM

MGlickLBZ

04-30-2007, 10:17 AM

Im sure this question has been asked, but i didnt see it. If my trucks VIN doesnt fall in between the numbers listed, do i have to get it checked? or should i?
Thanks for the thread on this, helped me alot so far.

If it doesn't fall in between the numbers you are ok. If you want, take it in for an oil change and ask them to do all of the updates.

smokin139

04-30-2007, 04:15 PM

Ok thanks, im gonna go in there soon, so ill ask them to do that. Thanks again.

AGGAR

06-23-2007, 12:36 PM

I was at the dealer today to get my radio checked out because it's a wonderfull GM POS cd changer. Then when they got done my check engine light came on and they plugged it in to clear it and it was a glow plug issue and he told me to keep my tuner off ther truck for a little while and see if it pops up again. So Maybe I need to have it done. Mine does fall between the numbers so I'll have them do it when thye install the new cd player. Thanks.

Ryan

RichLockyer

06-23-2007, 12:43 PM

The tuner is not going to make a difference... if you've got a CEL and your VIN falls under the recall, get them to do it ASAP.

It's a federal violation for them not to perform a RECALL, especially if they're trying to blame the CEL on the tuner. Glow plug failure will cost THEM a new block.

But make sure that you DO pull the tune before having them do the recall... the recall is an ECU reflash and any downloader programs will be lost.
You can reload later.

traeside

08-26-2007, 01:44 PM

So I am going to get a 2006 today vin 1GTHK23D46F208685 that makes it in need of the re-flash I am getting from a dealer should it have already been done? How can I tell?

RichLockyer

08-26-2007, 03:26 PM

It should, but make sure to have the service manager check. You can also run a VIN request over in the VIN request thread and someone will post what is contained in GM's system.

traeside

08-26-2007, 03:36 PM

I did post the VIN thanks.

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