New ECM update to be released by GM soon [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

WVSilverado

05-24-2008, 07:13 AM

Document ID: 2134207 #08142: Customer Satisfaction - ECM EEPROM - Reprogram ECM - (May 12, 2008)

Subject:08142 -- ECM EEPROM - Reprogram ECM
Models:All 2007 and Certain 2008 Chevrolet Silverado, Express

All 2007 and Certain 2008 GMC Sierra, Savana

Equipped with 6.6L Duramax V8 Diesel (RPO LMM - VIN 6) Engine

Condition
All 2007 and certain 2008 Chevrolet Silverado, Express; GMC Sierra and Savana vehicles, equipped with a 6.6L Duramax Diesel V8 (RPO LMM - VIN 6) engine, were produced with an ECM programming error that can result in incorrect data being written to the EEPROM used by the vehicle theft deterrent system, causing the engine not to crank or start.

Correction
Dealers are to reprogram the ECM with revised software that corrects the programming error.

Vehicles Involved
Involved are all 2007 and certain 2008 Chevrolet Silverado, Express; GMC Sierra and Savana vehicles, equipped with a 6.6L Duramax Diesel V8 (RPO LMM - VIN 6) engine and built within these VIN breakpoints:

Year

Division

Model

From

Through

2007

Chevrolet

Silverado HD

7E500051

7E604226

7F500001

7F567568

2007

Chevrolet

Express

71129148

71254841

2007

GMC

Sierra HD

7E500049

7E567556

7F500004

7F567556

2007

GMC

Savana

71129151

71254821

2008

Chevrolet

Silverado HD

8E100007

8E197008

8F100007

8F208985

2008

Chevrolet

Express

81100001

81197126

2008

GMC

Sierra HD

8E100012

8E196918

8F100002

8F208960

2008

GMC

Savana

81100076

81197101

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 dealers - GM DealerWorld Recall Information

- Canadian GM dealers - 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 program 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 program.

Calibration Information
Do not attempt to order the calibration number from GMSPO. The calibration numbers required for this service procedure are programmed into control modules via an MDI and Techline Tech 2® scan tool and TIS 2 WEB website with the following calibration updates:

2007-08 Chevrolet Silverado, Express; GMC Sierra, Savana: Use data version 5.5 for 2008 as of 05/12/08 or later, available on TIS 2 WEB; and on TIS DVD version 6.0 / 2008 or later, mailed to dealers beginning 06/04/08.

If you cannot access the calibration, call the Techline Customer Support Center and it will be provided.

Service Procedure

Program Engine Control Module
Important: Verify that the 12 volt battery has a battery charge of 12 to 16 volts. The battery must be able to maintain a charge during programming. Only use approved Midtronics 165-PCS charger or equivalent to maintain proper battery voltage during programming.

Refer to Service Programming System (SPS) in SI for programming procedures.
Program the ECM with the latest calibration. This calibration, or any that follow, is designed to address VTD concerns. As always, make sure your Tech 2® is updated with the latest software version.
Select the J2534 MDI and Reprogram the ECU from the Select Diagnostic Tool and Programming Process screen. The J2534 MDI will reprogram the modules in less time than the Tech 2® scan tool.

Additional Information for Vehicles currently experiencing this condition
One or more of the DTCs listed in the table below will be set in the event that a vehicle is currently experiencing this condition. Do not replace the ECM. Additional steps may also be required to properly complete the service procedure, as listed in the table below.

DTCs

Technician Observation

Perform After ECM Programming

P062F

No trouble found. Program ECM.

One ignition cycle. Start the engine.

P062F

2007 Express and Savana Vans Only . Program ECM.

*VTD Learn required. Ten minute with Tech 2® via TIS2WEB.

No DTCS with VTD Light Illuminated

2007 Express and Savana Vans Only. Program ECM. Perform VTD Learn.

*VTD Learn required. Ten minute with Tech 2® via TIS2WEB.

P062F and P0633

Program ECM.

One ignition Cycle. Start the engine.

P0513

The following DTCs P062F/P0633 can occur before or any combination of all three DTCs. Program ECM.

VTD Learn required. Ten minute with Tech 2® via TIS2WEB.

* For the 2007 Express and Savana Vans Only . When performing the VTD Learn with Tech 2® via TIS2WEB, when prompted select Powertrain VTD Learn.

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 Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program 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. GM dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.

Claim Information -- GM
Submit a Product Claim with the information indicated below:

Repair Performed

Part Count

Part No.

Parts Allow

CC-FC

Labor Op

Labor Hours

Net Item

Reprogram ECM.

N/A

--

N/A

MA-96

V1819

0.4*

N/A

Courtesy Transportation for vehicles within the New Vehicle Limited Warranties (US & Canadian GM Dealers)

N/A

N/A

N/A

MA-96

**

N/A

***

Towing

N/A

N/A

N/A

MA-96

T2020

N/A

****

* 0.2 hours may be added if Vehicle Theft Deterrent Relearn was necessary and performed as noted above.

** 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 Warranties.

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

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

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 program on their vehicle (see copy of customer letter included with this bulletin).

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.

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

Dealers are to service all vehicles subject to this program 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. Program 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 program enters your vehicle inventory, or is in your dealership for service in the future, you must take the steps necessary to be sure the program correction has been made before selling or releasing the vehicle.

May 2008Dear General Motors Customer:

We have learned that your 2007-08 model year Chevrolet Silverado, Express; GMC Sierra or Savana vehicle, equipped with a 6.6L Duramax Diesel V8 engine, was produced with a programming error that can result in Engine Control Module memory damage and will cause the engine not to crank or start. This is more likely to occur the longer you operate your vehicle.

Your satisfaction with your Chevrolet Silverado, Express; GMC Sierra or Savana is very important to us, so we are announcing a program to prevent this condition or, if it has occurred, to fix it.

What We Will Do: To prevent this condition from occurring, your GM dealer will reprogram the Engine Control Module (ECM) with revised software that corrects the programming error. This service will be performed for you at no charge .

What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as possible to schedule an appointment for this repair.

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 form and mailing it back to us.

If you have any questions or need any assistance, please contact your dealer or the appropriate Customer Assistance Center at the number listed below.

Division

Number

Text Telephones (TTY)

Chevrolet

1-800-630-2438

1-800-833-2438

GMC

1-866-996-9463

1-800-462-8583

Guam

1-671-648-8450

Puerto Rico - English

1-800-496-9992

Puerto Rico - Español

1-800-496-9993

Virgin Islands

1-800-496-9994

Courtesy Transportation: If your vehicle is within the New Vehicle Limited Warranties 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.

We sincerely regret any inconvenience or concern that this situation may cause you. We want you to know that we will do our best, throughout your ownership experience, to ensure that your GM vehicle provides you many miles of enjoyable driving.

Scott Lawson

General Director,

Customer and Relationship Services

Enclosure

08142

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

© 2008 General Motors Corporation. All rights reserved.

Nine Ball

05-24-2008, 07:51 AM

interesting info, I wonder what they would change to increase fuel economy?

Chromer

05-24-2008, 08:34 AM

interesting info, I wonder what they would change to increase fuel economy?

Prolly the same kinds of things the tuners change...

fire0021

05-24-2008, 10:50 AM

I wouldent count on a mpg calibration coming out. tht could lead to a load of liabilty on gm.

Tallyho74

05-24-2008, 01:41 PM

So I guess I'm confused (not to hard to do). The post says it's just a calibration for the anti-theft feature so is this really an engine operation upgrade or not? I am scheduled to get the ECM flashed on Tuesday at the dealer. If it's not going to improve fuel mileage, I would wait until the next oil change. If it will improve the mileage, I will make sure to get there as I am getting ready to go to Canada on Friday with a 600 mile one way trip ahead of me, thankfully not pulling a trailer!!

Let me know!!!

Ryan

armylifer

05-24-2008, 01:57 PM

What the service manager told me is that the yet to be released ECM update is supposed to address fuel milage issues with the LMM engine. He speculated that it would have something to do with how often the engine goes into a DPF regen cycle. He said that each regen cycle uses between 1 and 2 gallons of fuel. There is a lot of wasted fuel in each regen cycle and that is one potential place where fuel savings can be realized.

Also, someone posed on this thread that the ECM update that I am talking about has already been released. I don't know if that is so but I am waiting until my service manager calls me before I go asking for an update. This is because I just got an ECM update from him about a month or so ago. I don't know what that update addressed but he was clear that the update that he was telling me about has not been released yet. Since I have a great rapport with him I doubt that he would be telling me that the update is still unreleased if GM has already released it.

DURAtotheMAX

05-25-2008, 11:38 AM

He said that each regen cycle uses between 1 and 2 gallons of fuel. .

um. I dont think so...

I love service managers who know their stuff!

kgt

05-25-2008, 12:51 PM

dmwelljr

05-25-2008, 02:28 PM

Hey,i was getting my oil changed yesterday and they said it was for the theft system, something about the trucks not starting. I was also on the phone with Dan at ppe ordering my exhaust, and i mentioned it to him and he said DO NOT LET THEM REFLASH YOUR ECM, you programmer will not work.I am assuming that we would have to send our tuners back or something.So i did not get the reflash.

Runaway

05-25-2008, 04:55 PM

tommystunes

05-26-2008, 12:58 PM

I can see where after a year they could decide that once per tank for 15 minutes is not necessary.They already sense a pressure differential ,just tweak values. And besides , a year ago they could sell trucks!

TMyers

05-26-2008, 12:59 PM

I was told at one of my gm duramax courses by a instructor that regen uses 3-4 liters per tank(aprox 1 gallon) on the lmm engines. I have no way to confirm this information. It really makes no difference as there is nothing that can legally be done to correct this(in canada its a offence to modify or remove a emmison device) They are not going to have a recal to lessen the fuel consumption during regen as I sure they are using the least amount already to meet the emmision levels req by law.?? after all why waste it....

They don't need to use less fuel during regen, they need to make regen's happen less often.

I have had my EVO on now for about 5 tanks and have been watching the soot level's and when the truck goes into regen. And I will be honest and day I can find no rhyme nor reason for when it goes into regen. I am running the stock tune at this time other than changing tire sizes.

Most all of my driving is city and my normal fillup is about 30 gallons. Regens occour in ever lessening intervals. They use to happen pretty much when the truck was approaching empty. They are now occuring at just past half a tank. Soot levels when regen starts have been a high a 33 and a low of 14. At this rate I am about 5 tanks away from have 2 regens occur in a single tank full.

MPG drop during regen is around 1.5. I am lucky to get .5 of that back. Figure that is worth 30 miles on a tank of fuel and it is using about 2 gallons per tank for regen. I think mine is higher because in occurs in city driving.

Regardless IMO GM needs to come out and explain the regen process in detail so we can monitor whether it is working properly or not. As ash builds in the DPF does that mean that regens will occur in shorter intervals because the DPF is getting filled with ash? Based on what I am seeing something does not seem right.

WVSilverado

05-26-2008, 06:21 PM

GM needs to have the DIC display REGENERATION or something so that someone knows their trucks are in REGEN that is my only complaint so far. I know you can tell most of the time but my truck has started the process while idleing inside the garage.

raengines

05-26-2008, 07:34 PM

i took delivery of my lmm dec 24, had it in for oil change last week and the pc had about 10 updates on the list when we checked it, the most intresting had to do with making it quieter. strange thing is, it is now much quieter, almost nothing but fan noise. no fuel milage improvement noticable so far. (15.1 avg. overall since new)

robertleeii

05-26-2008, 08:55 PM

i wish GM would try to help with MPGs but a new update to increase MPGs sounds way to good to be true!

croman

05-26-2008, 08:55 PM

... Also, someone posed on this thread that the ECM update that I am talking about has already been released. I don't know if that is so but I am waiting until my service manager calls me before I go asking for an update. This is because I just got an ECM update from him about a month or so ago. I don't know what that update addressed but he was clear that the update that he was telling me about has not been released yet. Since I have a great rapport with him I doubt that he would be telling me that the update is still unreleased if GM has already released it.

That was me, I was in for an oil change the other day and was told that there was a ECM update, I asked what it was for and the lady working the service desk didnt know what it was, that it would be printed up on the invoice.. (as I have free oil changes for life, I didn't get the invoice) I was busy and had to get back to work so I didn't have time to wait around and ask someone what the ECM update was.. I will however give them a call tomorrow morning and ask what it was! I haven't filled up my tank since the ECM Reflash, so I cannot comment on anything yet.. but I seem to be getting a little better mileage then before.. I'll be filling up tonight and I'll report back.

Ted White

05-26-2008, 11:34 PM

Unless GM is lying to the technicians at the dealerships, and failing to fully disclose the full extent of the latest reflash (RC08142), the ONLY thing that RC08142 does is prevent a no-start condition which can improperly occur with the anti-theft system. I had the reflash done because I don't want the improper no-start condition to occur in my truck, especially if I am out on the boonies somewhere.

My dealership said that any reflash to give mpg increase is purely speculative at this time.

As for the confusion over what soot loading has to be present before regeneration occurs, regeneration is not dependent solely on soot level percentage. The pressure difference across the DPF could reach the critical level at a variety of soot loadings, depending on the way the soot is distributed in the DPF. Driving conditions also have an impact - if you spend much of the time at freeway speeds and/or towing a heavy load, regeneration can be continuous because there is sufficient heat in the exhaust to permit continuous regeneration.

Here is a good basic description of the regeneration process, but there is plenty of more detailed and scientific information available on the internet. Just use your favorite search engine.

armylifer

05-27-2008, 10:36 AM

Hey CROMAN, do you happen to know the release date of the ECM update that they applied to your truck? I was just in the dealership for an ECM update on 4/29/2008. I don't know what that update was addressing but the service manager at my dealership knows when I last had an update. Since he knows that I just had an update, and he was telling me about another ECM update that has not been released yet but is expected to be released in the next few weeks, I have to assume that my last update was not to address fuel milage.

I would like to add some observations that I made since my last ECM update on 4/29/2008. I actually had the truck in for an HVAC update to address the LOW COOLANT LEVEL message on the DIC. It was at that time that I had them check for any other new updates. They found an update for the ECM and the TCM. They updated all three at the same time. After those updates, the only thing that I noticed any change in, is that my DIC started reporting fuel milage more accurately. It has always reported anywhere from 1.5 to 2 MPG more than I was really getting. So, I have always been hand calculating the fuel milage. Well, I noticed that since my last updates, the DIC has started reporting my fuel milage more accurately. It is now off by just about .2 MPG. I like that it is reporting more accurately but this did not change my fuel milage.

Since the new update that he was telling me about has not been released yet (according to him), I doubt that the update that was applied to your truck has anything to do with fuel milage. I could be very wrong about that but I am just going on the information that I was given. One thing that we are all at the mercy of is our dealership's honesty toward us and how in touch they really are with GM. I like how Ronald Regan put it. Trust but verify! That is one of the reasons that I like this board. We all have a part in the verification process. Without people that are willing to post their experiences on this board, we would all be in the dark. Thank all of you who are posting your experiences and observations. I really appreciate the feedback.

jlsworks

05-27-2008, 11:05 AM

Is there an official ECM update number yet, thats not related to the Theft Det?
James

croman

05-27-2008, 01:44 PM

vortecfcar

05-27-2008, 02:04 PM

I'll check out the new .cal and see if there are any 'mileage' changes done. I wouldn't bet on it though.

We'll see.

Nick

ikoolu

05-27-2008, 03:17 PM

I had my done Friday last week and will let you know if it hcanges anything -- Iam getting 17-18 highway and 15 combined

vortecfcar

05-27-2008, 05:22 PM

I combed this thing with a fairly fine tooth comb and what I gather is that the new calibration is aimed mostly at how the truck runs while under its target operating temperature (<133*F). GM has gone to a much more aggressive timing table for cold engine operation. It wouldn't surprise me if trucks started picking up MPG with this update, it would mostly be short-trip use trucks which don't get time to warm up.

There may be more, I have to get back to work.

Thought you might enjoy the information.

Nick

dusteater

05-27-2008, 05:45 PM

Just Called My Dealer.He Said At first there wasnt a update then cked,and yes, there is. going next wed.also theres a recall on the frount vent hose,frount axle...

MUD SLUT

05-27-2008, 05:55 PM

Front axle vent hose is kinked and taped up.(GM builders forgot to remove the tape upon truck assembly:rolleyes:) Go below your driver side battery and remove the tape...done.

jb23

05-27-2008, 06:12 PM

dusteater

05-27-2008, 06:22 PM

Thanks.Still Wondering what will hapen when they ck the cpu.will it give me any mpgs? im getting around 16.9 around town.i have 10,000 miles.hope to go to 20 or more.

armylifer

05-27-2008, 06:38 PM

OK guys, I just got back from the dealer. I had a long talk with the service manager. Here is what he told me about the yet to be released ECM update that will address fuel milage. It has NOT BEEN RELEASED YET. The most recent ECM update that has been released has to do with a potential no-start condition as described by WVSilverado on paqe 2 of this thread. I have made an appointment to get mine updated tomorrow for this issue. Not all LMM engines need this update. Check with your service department to see if your truck is one that needs it.

As for the yet to be released ECM update that will address fuel milage. That one is currently in the approval process with the EPA. It cannot be released until it is approved by the EPA, he told me, because the update will address how often the engine goes into a DPF regen cycle. It has something to do with emissions. In any case, the way that this yet to be released ECM update is expected to increase fuel milage is by reducing the number of times an engine goes into DPF regen by adjusting the different parameters that are measured and used to determine when to go into regen. He said that the approval process could take up to two months. As of now, that is all the current information available to me by my dealer.

dmax500hp

05-27-2008, 07:00 PM

I had the update done a week ago and mileage is worse, way worse! Also Programmers do not work with this update. PPE is still working on backdoor programming.

armylifer

05-27-2008, 07:07 PM

dmanx500hp, which update are you speaking of? The update that will address fuel milage has not been relaesed yet and the one that addresses a potential no-start condition will do nothing at all to affect fuel milage.

Rcannon

05-27-2008, 07:57 PM

Not sure what to believe anymore:rolleyes:

BKDespain

05-27-2008, 07:58 PM

I had the update done a week ago and mileage is worse, way worse! Also Programmers do not work with this update. PPE is still working on backdoor programming.

Why would you go in for an update when you have the DPF delete tunes? You have no regens to hurt mileage and if it was the update spoken of, you tuner would no longer work. So it is safe to say that you did not get the the update spoken of. Someone correct me if I'm wrong.

vortecfcar

05-27-2008, 08:09 PM

If it's the new operating system (12628594), then yes - EFILive can tune it.

Tallyho74

05-28-2008, 07:59 AM

I just had mine updated yesterday. It's for the no start security flaw and the update will prevent this. The only other question I had for the dealer on a side not was updating for the increase in tire size. They checked with GM and they stated that if you use an approved tire size, i.e. 265 on a 17" rim, they can give the dealer a code. Since I used 285's on a 17" rim they wouldn't provide the code so the dealer service rep recommended an aftermarket programmer to adjust the tire size. Maybe he wasn't sure about what he was talking about, however I can't imagine recommending a programmer if they just installed software to block it?

In regards to the mileage, I don't know how you guys do it. I have averaged between 15-16 since I bought the truck unless it goes into regen mode. I would kill to average 19-20 mpg's!!!

Ryan

CoonassDmax

05-28-2008, 08:13 AM

Read this post yesterday:I combed this thing with a fairly fine tooth comb and what I gather is that the new calibration is aimed mostly at how the truck runs while under its target operating temperature (<133*F). GM has gone to a much more aggressive timing table for cold engine operation. It wouldn't surprise me if trucks started picking up MPG with this update, it would mostly be short-trip use trucks which don't get time to warm up.

There may be more, I have to get back to work.

Thought you might enjoy the information.

Nick

Brought my truck in immediately to receive the update. Lately the only trips I have made are < 5 miles to work. Fuel economy has sucked (13 mpg). Showed almost immediate improvement on the DIC (16.3 mpg). Will keep watching thread to see if others are getting comparable results.

Skidus

05-28-2008, 11:28 AM

Are there any symptoms regarding the no-start security flaw besides the obvious no-start? I didn't want to have to put the stock exhaust back on to have them update the ECM, making me nervous reading about this as I have a Lake Powell trip coming up in a few weeks and wouldn't want it to not start 4 hours from home.

robertleeii

05-28-2008, 12:00 PM

what is this no start issue? link if i have missed it somewhere on here please?

i had a big issue with my truck not starting for over an hour yesterday

robert

GlockWRX

05-28-2008, 01:08 PM

Read this post yesterday:

Brought my truck in immediately to receive the update. Lately the only trips I have made are < 5 miles to work. Fuel economy has sucked (13 mpg). Showed almost immediate improvement on the DIC (16.3 mpg). Will keep watching thread to see if others are getting comparable results.

That's my exact situation. I get an average of 13mpg on short trips. What does the invoice say you updated? I'd like to go to my dealer and tell him to do the same thing.

jaydcc69

05-28-2008, 01:51 PM

Just had the worst luck. Dropped my truck off to have the lock cylinder replaced on the tailgate since I accidentally snapped a key off in there and they called me up and said truck is ready.

I started driving my truck and noticed it had less power and whatnot. I went back and I asked them wtf (i said the actual words quite loudly). They said all they did was change the lock cylinder, gave me a new key, and did a complimentary truck wash and also updated the truck's pcm since there was an update. I continued to curse them out. They dont understand why I am upset. I pulled the service manager out by his shirt, brought him to the ground with me and pointed under the truck - COMPLETE TURBO BACK EXHAUST!. He still didnt understand. Now luckily I had my PPE tuner and I re programmed it on the spot. Guess what! IT WOULDNT TAKE THE PROGRAM. I tried it 7 times over the course of 2 hours there. The dealership ordered a new PCM for me and will not have the update on it. If it does, they say they will pull one from a vehicle on the lot. Seriously people, do something to keep them from doing something to your truck without your approval.

NelsonDiesel

05-28-2008, 01:58 PM

robertleeii

05-28-2008, 02:01 PM

jaydcc69

05-28-2008, 02:16 PM

I tried to return the truck to stock with the PPE. This new update they put on the PCM actually does block out the tuners. I also tried a BRAND NEW FRESH AND NEVER USED PPE tuner on the truck thinking ok they reflashed it etc... That wont work.

The only thing that I KNOW still works is my banks 6 gun on my other truck.

They dont know anything at the dealership. it is a TINY GMC dealership dubbed the name "Giant GMC of Federalsburg". They have a total of 8 GMC sierras on the lot and the rest are all GMC Medium Dutys. Small dealer way in the middle of redneckville.

NelsonDiesel

05-28-2008, 02:53 PM

jaydcc69

05-28-2008, 03:22 PM

PPE said to wait 2 weeks. I have to send the programmer into them for a fix. In the meantime the dealership is replacing 3 PCM's without 08142 on it at no charge.

NelsonDiesel

05-28-2008, 03:45 PM

PPE said to wait 2 weeks. I have to send the programmer into them for a fix. In the meantime the dealership is replacing 3 PCM's without 08142 on it at no charge.

gonna be tough because that is the only program they can install .....

jb23

05-28-2008, 07:24 PM

your ppe won't work because of the new calibration. It's not locked. Just have to wait for PPE to get it in an update. Have you called to see what they say?

PPE will be busy and others from the sound of it

CoonassDmax

05-28-2008, 08:50 PM

That's my exact situation. I get an average of 13mpg on short trips. What does the invoice say you updated? I'd like to go to my dealer and tell him to do the same thing.

Hey Glock, I didn't receive the invoice because I was in a hurry to leave, but I mentioned the reflash for fuel economy and the diesel tech who performed the work found it under that heading. (LMM fuel economy). He said it was the first he had heard of it but he apparently had an uplink to GM and found it there.

loboboyatv

05-28-2008, 10:16 PM

coon can you get a buletin number for us??? If you have the buletin number I am sure my dealer could find the info. Post it up if you can get it please.

jaydcc69

05-28-2008, 11:00 PM

Document ID 2134207 # 08142 Dated May 12 2008 Reprogram ECM ECM EEPROM

salmandmx

05-28-2008, 11:14 PM

He said the recall was for security system and issue with truck not starting and the keyless remote start not working. Gave him my VIN number and he said my truck didn't need anything. As stated a few page back, it was only pretaining to the 4 VIN breakpoints as were mentioned.

andy63830

05-29-2008, 01:11 PM

armylifer

05-29-2008, 01:56 PM

If it we me, I would wait until quad comes up with an update. If you go back to stock tune right now without putting your DPF back on, I think that your truck would go into limp mode right away because the ECM would sense that there is no DPF. In your case, it is probably better to talk with your tuner manufacturer before going in to get the GM update.

andy63830

05-29-2008, 03:00 PM

I think I'll run my truck until it I start having problems. I just put the exhaust on, I'm not taking it back off so soon!! Damn, that was a lot of work, sure wish I had known about update beforehand. I wonder if there is any way of checking vin to see if my truck is included in recall or are all 08 dmaxs included. Also, when and if truck wont start, will it eventually fire up or are u stranded first time it fails?

BlackSilver

05-29-2008, 03:21 PM

Got a notice in the mail today to bring my 08 DuraMax in for a new firmware load to the ECM.

Skidus

05-29-2008, 03:54 PM

I just put my stock exhaust back on after I called the dealer to find out if I am on the list for the update. I had to take it for a 30 minute drive because the ECM was freaking out I had gone without a regen for a while. I checked to see if i had any codes after the drive and it's showing a p1448 code? I don't have any CEL and it seems to be running ok, should I clear it and forget or is it something else. Soot is at 0 now and the regen process quit.

JIMMMY

05-29-2008, 04:02 PM

The trials and tribulations of tuners........

:rolleyes:

BCHandy

05-29-2008, 04:36 PM

No update for me, my truck runs just fine. ;)

Bodis22

05-29-2008, 05:09 PM

My VIN falls within the numbers, but I think I will forget I saw this thread till something happens.

andy63830

05-29-2008, 05:30 PM

hey Bodis where did you find the vin info?

cujo489

05-29-2008, 05:44 PM

my delete is on the shop floor, waiting. i gues i should call the dealer. orrrrr is this update just for the trucks with the remote start? mine has the capabilities but no remote.

Rcannon

05-29-2008, 06:33 PM

I just got a letter in the mail...

blah blah blah your truck was produced with a programming error that can result in ECM memory damage and will cause the engine not to crank or start. This is more likely to occur the longer you operate your vehicle.

It says nothing about mileage.

cujo489

05-29-2008, 06:38 PM

just called dealer. service guy says mine falls in the reflash. so is my Quad not going to work when i get it back? HELP :eek:

Skidus

05-29-2008, 06:48 PM

hey Bodis where did you find the vin info?

Post # 20 of this thread shows the vin numbers.

Rcannon

05-29-2008, 06:49 PM

here's a dumb question..

Has anybody experienced this no start condition?

Skidus

05-29-2008, 06:55 PM

I thought there was a couple guys trucks that left them stranded on here. I wasn't happy about putting the stock back on but I also don't want to be stranded during my Lake Powell trip coming up.. As the smarta@@ higher up pointed out it's the trials and tribulations of tuners.

rcpd34

05-29-2008, 09:21 PM

[quote=Rcannon;2678098]here's a dumb question..

Has anybody experienced this no start condition?[/quote

YES. I posted it here several months ago. You turned the key and NOTHING. The headlights turned off and no click, no nothing. Had it towed to the dealer and it sat for days as they couldn't figure it out. They finally said the problem was the plug on the harness going to the ECM was not fully connected :rolleyes:; it looked fine, but when they pulled it off and put it back on, the truck started. Then they blamed it on the installer who ran my snow plow harness! :mad: I thought it was B.S. at the time, but what could I say? My notice from GM about the ECM programming Error, describing my exact issue, arrived today. Can someone post the TSB on this please?

Thanks!

TOMMAN58

05-29-2008, 09:28 PM

Got a recall today for a software issue that they said would correct a problem where the engine would not crank.
I'm looking to find out if it more than that.

stg1986

05-29-2008, 10:07 PM

here's a dumb question..

Has anybody experienced this no start condition?

Yes, it did it once, truck would not turn over, relocked every thing twice/unlocked and it cleared it, never again.

cujo489

05-29-2008, 10:46 PM

got my letter today about the reflash after i got home from work......

Yzlvr

05-29-2008, 11:59 PM

I got my letter today also.

stg1986

05-30-2008, 12:03 AM

same hear

Yzlvr

05-30-2008, 12:08 AM

Has Quadzilla found a fix yet?

jaydcc69

05-30-2008, 12:08 AM

So I've read this entire forum, I just want to make sure I am understanding this correctly. Im running a Quad Stealth II with dpf delete. I just got a letter today from gm about the programming error for the no start issue. Am I to just say to hell with it and hope it does not happen to me, or am I to wait for quad to come up with an update and then take it in to be reflashed. And then reinstall the quad with new updates??? is that how it will work or will my programmer be rendered useless

Yeah its a HOAX. Do not fall for it.

If you let them do it, it will have a factory programming on it and render your tuner useless.

PPE Tuners will work in 2 weeks with an update. Banks systems will work regardless.

skeeterguy

05-30-2008, 11:03 AM

Got my letter last night.

andy63830

05-30-2008, 11:06 AM

Yeah its a HOAX. Do not fall for it.

If you let them do it, it will have a factory programming on it and render your tuner useless.

PPE Tuners will work in 2 weeks with an update. Banks systems will work regardless.

I would agree and say it is B.S., except for the fact that people are having the no-start problem.

Scarrow

05-30-2008, 12:06 PM

Last weak the front diff required some attention and the dealer I go to knows about my programer and that the DPF is out of my truck and he is cool with this since we have been old raceing buddys from way back.
I pulled the programer out and took the truck into them after they regeared my diff they put in the security up date ,after I picked it up and tried to load the programmer it to would not work just starts and stalls right away.
I went back and he looked up the campain and said it was only for security but once the ecm is updated there is no backing it out.They had no ecm in stock so he has the same truck as mine and swapped the ecm from his personal truck that has not been updated and still is stock and installed it in mine till ppe has a fix. Awsome guy to deal with.

rcpd34

05-30-2008, 12:46 PM

D/AChris

05-30-2008, 12:58 PM

Has Quadzilla found a fix yet?

Sent email to quad yesterday, this is what I got back from Jeremy McCann:
Chris
The update should not affect the tuner in anyway. The new update that GM has is just to correct the known issue and is not adding a new Operating System to the PCM. What version is the tuner now. Worst cause you may need to update it to the new 2.41 version that was added at the beginning at the month.

Jeremy McCann
Tech Manager

Don't know for sure, but this is what I got. Anyone with a Quad have issues reinstalling? Chris

Yzlvr

05-30-2008, 01:24 PM

Then why is PPE and EFI Live working on fixes? I think PPE said 2 weeks, and EFI Live has it already I think?

I was looking into the Quad, but decided to wait to see what happens in the next couple of weeks.

andy63830

05-30-2008, 02:58 PM

Sent email to quad yesterday, this is what I got back from Jeremy McCann:
Chris
The update should not affect the tuner in anyway. The new update that GM has is just to correct the known issue and is not adding a new Operating System to the PCM. What version is the tuner now. Worst cause you may need to update it to the new 2.41 version that was added at the beginning at the month.

Jeremy McCann
Tech Manager

Don't know for sure, but this is what I got. Anyone with a Quad have issues reinstalling? Chris

Sounds good, but I think I'll let somebody else be the guinea pig!

NelsonDiesel

05-30-2008, 03:07 PM

the new 08's have a different operating system so they are working on that.

Who will be the guineau pig to find out what is "really" in this ???

TOMMY !!!! Bring your ECM over, LETS DO IT !!!

Fire Escape

05-30-2008, 04:20 PM

I,m scheduled to go in tomorrow for the update. My truck is stock and I plan on keeping it that way. I'm leaving tuesday, towing the boat to the Keys. Should I wait until I get back or is this update not a big deal. In other words, right now the truck is not broken....

D/AChris

05-30-2008, 04:47 PM

Everything is fine if your stock, it's those of us that have deleted the dpf that are having issues, just until the programmers get around it. Your fine to get yours updated, I probably would right now if I was stock. Chris

TOMMAN58

05-30-2008, 07:55 PM

After reading all the fear and trouble with those who are junior engineers rebuilding a great engine it makes me wonder what is the prupose of all the time and expense these guys are going through. It is almost agiven that with the next couple of months GM will most likely put out a refined program giving you more MPG's than before. With the price of oil you'd have to have another job if you're going to put your foot in it very often so what's the deal?
I guess I'm missing something but don't know what it is.

Lindyn46

05-30-2008, 08:10 PM

bubba04max

05-30-2008, 09:07 PM

got my letter today also...ive been problem"less" ever since ive owned my truck (knock on wood) and have almost 6K miles on my quad and turboback duals...i havent even updated my quad since i bought it back in october...so should i just ignore the letter or what??

Fulton 1

05-30-2008, 11:15 PM

I've emailed Justin at Quad and he said that they've done no software updates with regard to this so far and there have been no issues. However, he stressed that likley there have not been many folks that have done this reflash yet.

My guess is that this will be resolved within the next couple of weeks and there is no need to get excited. My truck, being within the VIN range for the recall, has never had any issues and I imagine that most are the same. I will do nothing in the short term - at least not until I hear more from the experts.

D/AChris

05-31-2008, 09:14 AM

I agree the 2008 Duramax has plenty of HP and Torq. That being said I have owned 5 Duramax/Allisons and all have had plenty of HP. The cost of all these gadgets just don't give you enough in return. GBY....

Well if you think these "gadgets" don't make sense logically, lets do some math. My mpg stock was 13-13.3mpg, consistently. After a $700 Quad/Magnaflow setup, just got over 16mpg. No difference in driving or route taken. This comes to about $1100 a year in savings at current local price of $4.79 a gallon. So, in less than 8 months, it pays for itself. After that, I'll be saving well over a thousand dollars a year (price will continue to rise, so more savings), just driving 15K miles a year. The biggest reason though, I don't have any issues with my DPF clogging up while towing with my kids in the back seat. Piece of mind knowing I don't have any issues, is priceless. To each his own, but that's my opinion on the subject. Chris

TOMMAN58

05-31-2008, 10:11 AM

Well if you think these "gadgets" don't make sense logically, lets do some math. My mpg stock was 13-13.3mpg, consistently. After a $700 Quad/Magnaflow setup, just got over 16mpg. No difference in driving or route taken. This comes to about $1100 a year in savings at current local price of $4.79 a gallon. So, in less than 8 months, it pays for itself. After that, I'll be saving well over a thousand dollars a year (price will continue to rise, so more savings), just driving 15K miles a year. The biggest reason though, I don't have any issues with my DPF clogging up while towing with my kids in the back seat. Piece of mind knowing I don't have any issues, is priceless. To each his own, but that's my opinion on the subject. Chris

13mpg I guess I'd be upset but I'm getting 15.8 to17 in the city. 22+ at 64mph, 18.5 at 74mph and 10.7 to 11 towing 8000# trailer at 64 mph. Truck has almost 5000 miles. no bitch from me and no need to screw up warranty.
I'm hoping for better mph when it is broke in but I drive with a light foot and make sure rpm's when towing stay low by moving in and out of cruise and in and out of t/h mode.

psimms

05-31-2008, 10:25 AM

the letter I recieved friday states ecm programming error that can result in ecm damage will cause the engine not to crank or start

luvlabs

05-31-2008, 10:29 AM

Mine goes in Wednesday for the reflash. I'm off on a camping trip towing the fifth wheel after that and so I should have a pretty good idea whether or not it is going to make any real difference.

rcpd34

05-31-2008, 11:01 AM

Edge advises they will have an upgrade for the new O/S in a few days.

jhall

05-31-2008, 12:55 PM

just curious t know and I haven't seen where anyone asked so,

Does this aplly to the 07.5's also

jlsworks

05-31-2008, 01:36 PM

I just got the 8142 letter too.

But, I'm averaging under 15mpg with just over 7000 miles and would like to see; less regens, possibly a quieter/smoother motor, better gas mileage, lower EGTs and towing... lets not dip into the 8mpg range when I'm towing 10,000lbs!

When will this recall be coming?
James

rcpd34

05-31-2008, 01:38 PM

Fulton 1

05-31-2008, 01:58 PM

andy63830

05-31-2008, 02:37 PM

Diesel Pete

05-31-2008, 05:22 PM

What he said above! Quietest I've ever heard!:exactly:

badinblack

05-31-2008, 07:44 PM

:rolleyes:I just got the 8142 letter too.

But, I'm averaging under 15mpg with just over 7000 miles and would like to see; less regens, possibly a quieter/smoother motor, better gas mileage, lower EGTs and towing... lets not dip into the 8mpg range when I'm towing 10,000lbs!

When will this recall be coming?
James

I don't want a magic truck, but when my old lb7 and lly got 13/14 towing, 17 city and 21/22 highway, I don't think its too much to ask to have somewhat close to that with a truck that should by far be more advanced. I'm getting 8.5 towing 8k, 13 city and 16/17 highway.

As well, I don't understand how some get such great economy with the LMM and others get far less (like myself)

....and just in case your wondering, I drive like a grandma, especially when towing and everywhere for that matter. :rolleyes:

JIMMMY

05-31-2008, 08:08 PM

..... would like to see..... a quieter/smoother motor...

You have to be JOKING. Sure you have an LMM !?

:eek:

FireStarter

05-31-2008, 10:03 PM

andy63830

05-31-2008, 11:12 PM

JIMMMY

06-01-2008, 10:21 AM

I have an 2007.5 and I got my recall letter today. I'll call to set an appt. first thing monday. From reading the posts I'm thinking this is a two purpose update. To fix the non-starting issue and to block aftermarket tuners. Anyone agree? While I'm there I'll have them adjust my TPMS down to 50psi on all four corners and my 2nd oil change at 10k miles.

X 2 on the 50 psi setting :D - Been waiting for an excuse to bring her in to also do that at the same time.

No it's not to block tuners, get real. :p: It just happens to, as will future updates. Tuners have to expect these hoops to jump thru.

TOMMAN58

06-01-2008, 01:44 PM

X 2 on the 50 psi setting :D - Been waiting for an excuse to bring her in to also do that at the same time.

No it's not to block tuners, get real. :p: It just happens to, as will future updates. Tuners have to expect these hoops to jump thru.

I don't think it matters what psi you are at as long as the relationship between the two fronts or the two backs are kept with 5# of each other.
In other words lower them to what ever you want but do the same to the opposite tire.
I do what ever GM suggests involving the oil changes and all the other maintainance, they are ones warrentying it and they know how far they can extend without having issues.

rcpd34

06-01-2008, 08:58 PM

X 2 on the 50 psi setting :D - Been waiting for an excuse to bring her in to also do that at the same time.

Why do you need to bring it in to the dealer to change the tire pressure?

hookdOnDmax

06-02-2008, 01:39 AM

They're not referring to changing the tire pressure.
They want to change the "warning pressure," that pressure at which the dashboard nags at you,
"Tire pressure low ... check rt-rear tire pressure!!!!" :rolleyes:

LBZrcks

06-02-2008, 02:54 AM

I don't think it matters what psi you are at as long as the relationship between the two fronts or the two backs are kept with 5# of each other.
In other words lower them to what ever you want but do the same to the opposite tire.
I do what ever GM suggests involving the oil changes and all the other maintainance, they are ones warrentying it and they know how far they can extend without having issues.

I don't think so not on mine atleast, there is min and max psi's set for the tire pressure monitor. I've aired down my truck many times for the track or dunes keeping all 4 corners within 5 psi and still get the tire pressure warning for all tires;)

wellsaidfred

06-02-2008, 06:29 AM

here's a dumb question..

Has anybody experienced this no start condition?
Yes it happened to me. Turned the key and nothing, the truck had less than 1000 miles on it. I ended up getting the truck jumped then drove it to the dealers. They had the truck a day and said the issue was with OnStar seeing a code and trying to call out over and over ran the batteries down. I'm not buying that excuse but that's what the dealer told me, I guess I had stupid written on my forehead that day or something...lol.

kybones67

06-02-2008, 07:50 AM

Gents - My wife handed me a bulliten yesterday that reads as follows

Dear Mr Customer

We have learned that your 2008 model year Chevrolet Silverado, equiped with a 6.6L Duramax Diesel V8 engine, was produced with a programming error that could result in Engine Control Module memory damage and will cause the engine not to crank or start. This is more likely to occur the longer you operate your vehicle.

And they gon to say they will give me a FREE ECM update!!

Sounds a little suspicious to me. looks like the way it reads to me there is no concern about fuel economy at all. They after all "Post no fuel economy ratings as required by law"

They are after something else and want to scare you into an update. As others have posted it's probably tighter security.

Hey - maybe OPEC paid for the update to make it regen more!!

Fulton 1

06-02-2008, 09:01 AM

The quads are still working after the new update..(good news)

So, you've personally had the GM reflash done and then reinstalled the Quad tune without issue? If so, which version of the software are you using - 2.41?

oconnorstp

06-02-2008, 09:06 AM

Hi gang,

Great thread. I found it while spending a little time on The Google, trying to figure out what up with the one-regen-per-tank behavior I'd seen over the last 400 miles. This was far and away the most helpful/informative.

I'd already gotten an appointment to have the ECM flashed, since the dealer was saying there are 3 updates available. I'll cancel that appointment and keep an eye on DieselPlace for news of that update that's mentioned as coming, possibly in a few months.

I too drive like a Granny (my other car is a Prius, I get 48-50 mpg on that one). So I'll join the gang with pretty-good mileage on the Chev -- if I don't get a regen, I'll typically get 20-21 mpg unloaded, 12 towing on a good day (favorable winds, weather, no-regen) and 8 on a bad day (strong headwind, cold, regen). That dang regen will take 1-2 mpg off a tank of gas -- I often find myself at 19.5 after it recovers, and it'll drop from 21.5 to 17.5 in 5 miles of driving. Hooyah! Lotta fuel being burned there.

I'm an eco-nutcase. We live on about 420 acres (http://www.aprairiehaven.com) that's a huge prairie/woodland/wetland restoration project and because of what we're doing, I just figured out that we're also a gigantic carbon sink. I figure we're slurping up about 50 families worth of carbon here, so I run that bumper sticker and feel no guilt. But let's get real! Losing a gallon or two of fuel that that DPF makes me nuts.

Having read this thread, I'm gonna stay stock for a while and see if they come up with a less-regen version of the ECM load. If they don't, I'm going to talk to the dealers up in St Paul/Mpls and find me one that will do warrantee work on the truck after I do a DPF-delete, turbo-back exhaust tune. Anybody from around there got any recommendations of tuner-friendly Chev dealers?

I really appreciate all the folks who've contributed to that LMM Exhaust: DPF,Non-DPF, Tailpipes, Full Systems, Codes Mods (http://www.dieselplace.com/forum/showthread.php?t=212196) sticky-thread over in the Power & Performance/Fuel System, Air, Exhaust, & Emissions Upgrades section of the forum. If you haven't read that thread, it's a great read. By the end of that, I felt like I kinda knew what I'm doing.

Great job peepul, thanks!

loboboyatv

06-02-2008, 11:37 AM

This thread seemed to get a little off track has anyone heard any new news on the latest ECM update that was supposedly in EPA approval. the one to lessen the Regen's?(speculated) Just wondering.

redmetoc

06-02-2008, 12:54 PM

Hey All,

Got the letter last Friday. Took the truck in this morning for the reflash. Talked to the service manager about any "hidden" purpose to the reflash, such as jamming programmers or improvements to mileage. He read me a description of the reflash from his monitor and it just rehashed what was in my letter and said he didn't know of any other purpose to the current reflash. I also asked him if there was a reflash in the works to improve mileage, whether addressing DPF issues or not. He said he didn't know of any.

Driving home on about five miles of freeway I did a mileage check. There was no drop in MPG, which I was concerned about. In fact there was a slight increase in the rough numbers below. I normally drive at 60 mph so I'm more sure of that figure than the ones at 65 or 70 mph.

Here are the rough figures I got from the DIC after resetting and letting the numbers settle out after about 30 seconds (level road, 85 deg F, no apparent wind, no load, 3990 miles):

70 mph = 17.5 mpg
65 mph = 19.0 mpg
60 mph = 21.5 mpg (This is a little higher than my "normal" reading closer to 20.0 mpg).

Previous towing mileage with my ~6800 lbs travel trailer gets me about 12 mpg at about 60 mpg. Disappointing but I'm hoping for an improvement with more miles on the truck.

Cheers,
WJA

whitetailslayer

06-02-2008, 12:57 PM

With the New ECM update:
Will I have to go to get my tire pressure recalibrated with a Tech 2 (headache finding someone to do it the first time) because of my 55# setting?
Will it block my availability to put back on my Superchip?
Just curious. Thanks in advance.

armylifer

06-02-2008, 01:40 PM

This thread seemed to get a little off track has anyone heard any new news on the latest ECM update that was supposedly in EPA approval. the one to lessen the Regen's?(speculated) Just wondering.

As I said in a couple of places in this thread, the service manager at my dealership told me about an ECM update that is pending EPA approval. He said that he was talking with a GM regional engineer about my complaints (as well as other people's complaints) about the fuel milage being affected by too many DPF regen's. What the engineer told the service manager and he relayed to me was that they are trying to get EPA approval for a new tune (ECM update) to reduce the number of regen's that happen. This in turn would result in better fuel milage. He also said that they expected approval of the ECM update in the next few weeks to a couple of months. That is the last word that I heard. In the meantime, GM has released a couple of other ECM updates and I think that is what got people off track from my original post.

I have just been letting this thread grow because I lost control of the subject long ago and frankly, some of the posts even though off subject from my original post, are really helpful. I hope that people continue to post their observations. I also hope that this subject keeps coming up to the GM dealerships so that they realize that we want some action from them.

loboboyatv

06-02-2008, 02:00 PM

thanks Armylifer. I agree with the extra content but thought we needed an update to the original post subject matter. I have spoke with my dealer about this and they are waiting for me to find more info. LOL They have tried all of their contacts and no one is talking as they put it.

keep my fingers crossed and hope for the best but i have been seeing an improvment in my mileage just because I am driving better and not stomping it to the floor all the time.

LMM_Guy

06-02-2008, 04:52 PM

Guy's there is a really easy way to find out what was changed. Just talk to EFI Live guys. They can just pull up the regen tables in the new OS and see if anything has been changed. The OS change required them to rehack so you know they were looking at it.

Rcannon

06-02-2008, 06:17 PM

As I said in a couple of places in this thread, the service manager at my dealership told me about an ECM update that is pending EPA approval. He said that he was talking with a GM regional engineer about my complaints (as well as other people's complaints) about the fuel milage being affected by too many DPF regen's. What the engineer told the service manager and he relayed to me was that they are trying to get EPA approval for a new tune (ECM update) to reduce the number of regen's that happen. This in turn would result in better fuel milage. He also said that they expected approval of the ECM update in the next few weeks to a couple of months. That is the last word that I heard. In the meantime, GM has released a couple of other ECM updates and I think that is what got people off track from my original post.

I have just been letting this thread grow because I lost control of the subject long ago and frankly, some of the posts even though off subject from my original post, are really helpful. I hope that people continue to post their observations. I also hope that this subject keeps coming up to the GM dealerships so that they realize that we want some action from them.
This sounds plausible to me and makes perfect sense. However what I'm curious about is, if regens are less frequent will it not cause the dpf to fill up faster or not? Will the less frequent regens be effective enough to clean the filter adequately?

everest

06-02-2008, 07:45 PM

helloto all,
got my letter on friday and took it to the dealer today (monday 6/26/08 ). took about a 1/2 hour.there was no update number on my letter, but on the work order i got from the dealer it says, ( 08142 ECM REPROGRAM ), also (j#1 11PNZA). dont know if this will help you but thats all i have. the letter also said that the ECM had to be reprogramed with revised software to correct the problem.
if not corrected , it can result in ECM memory damage and will cause the engine NOT to crank or start. hope this helps.

PS. i hope this helps with my fuel mileage, i have 5,700 miles on the truck and i only get 11 miles on a gallon.

rcpd34

06-02-2008, 08:26 PM

cujo489

06-02-2008, 10:17 PM

dmax500hp

06-02-2008, 11:50 PM

Why would you go in for an update when you have the DPF delete tunes? You have no regens to hurt mileage and if it was the update spoken of, you tuner would no longer work. So it is safe to say that you did not get the the update spoken of. Someone correct me if I'm wrong. I have all the parts in the garage have not done the install yet. My crank and rods are out of the lmm right now. The mileage was worse and computer is locked now. Will not take the ppe programmer. PPE Stated I would have to send them my pcm and they could load the old os version. I think the os version of no start is bs. They are clamping down on tuners and emissions security reasons. I will be sending my pcm in to get it put back to the state it was when it worked. They charge $150 to return it back. Does anyone know if EFI Live is going to work with the new update. PPE said they would have a release. They just informed me no way to correct the problem send us your pcm and we will program it back the way it was b4!

NelsonDiesel

06-03-2008, 12:32 AM

I have all the parts in the garage have not done the install yet. My crank and rods are out of the lmm right now. The mileage was worse and computer is locked now. Will not take the ppe programmer. PPE Stated I would have to send them my pcm and they could load the old os version. I think the os version of no start is bs. They are clamping down on tuners and emissions security reasons. I will be sending my pcm in to get it put back to the state it was when it worked. They charge $150 to return it back. Does anyone know if EFI Live is going to work with the new update. PPE said they would have a release. They just informed me no way to correct the problem send us your pcm and we will program it back the way it was b4!

i believe efi has the new calibration already covered.

JIMMMY

06-03-2008, 12:43 AM

There is some serious paranoid conspiracy theory going on here.......

:D

Skidus

06-03-2008, 03:20 AM

Thanks for the worthless comment #582. Don't post till you help someone please.

JIMMMY

06-03-2008, 08:58 AM

:crazy:

It is not worthless to point out that it's a little whack, to think GM is putting time and money into releasing warranty ECM upgrades to foil the small percentage of owners that choose to tune their rigs. Get real dude.

:crazy:

Call me crazy, but my rig is the dealer service in line this morning for the ECM upgrade and a little Tech 2 work to make the TPM system accept 50psi all the way around.

:crazy:

Peter34668

06-03-2008, 12:19 PM

Thanks for the worthless comment #582. Don't post till you help someone please.
This posting about not posting help did not help or stay on topic Please don't post till you help someone.

Sorry just messing with you, no offence, just some humor.

bzied

06-03-2008, 12:31 PM

bzied

06-03-2008, 12:36 PM

I received the recall 08142 last Friday and just returned today from the reflash. I traveled 55 mph for forty miles to the dealer and was getting 21.4 average mph. I got 24.4 average on the way back with same speed on the same road. I was not told that there would be any other consequences from the procedure than those stated in the letter, about the starting problem. I believe that there is more to this than meets the eye. I have a 2007.5 extended cab, short bed with 4400 miles.

oconnorstp

06-03-2008, 01:25 PM

Mixed news from my Chev dealer's service manager today. He's researched the reflash issue a lot because he sells a lot of heavy trucks (4500, 7500, etc) and he's getting a fair amount of chatter from his customers about this issue.

He had checked with Chev in February and they told him at that time that there were no plans for a recall/reflash like the one we're hoping for here. He was pretty perky when he heard my summary of this thread -- that there's one coming in a month or two -- so he checked again. Still nothing on the horizon that he can see.

He *did* find a recall for overactive DPF's if you're towing and throwing codes. The document ID numbers are 2025826 and 2067076 and they talk about recalibrating the DPF regen cycle. He's gonna flash those in for me next week and we'll see what happens.

One of the things we were commenting about is that it's happening backwards for me -- more regen in the warm/summer months than the cold (it gets pretty cold here in Minnesota) months. We were speculating that it might be summer-fuel related.

The good news is that he's darn calm about warrantee issues. So I may be joining the turbo-back exhaust, DPF-delete crowd here pretty soon. :thumb:

JIMMMY

06-03-2008, 01:54 PM

I received the recall 08142 last Friday and just returned today from the reflash. I traveled 55 mph for forty miles to the dealer and was getting 21.4 average mph. I got 24.4 average on the way back with same speed on the same road. ......

Just got the call that the rig is done TPM reset and all, will report in if my MPG on the DIC changes - Typically 22MPG at 60MPH on the DIC.

I gave them the TPM reset procedure posted in Wheel's and Tires FAQ's here and they said they followed it - you would think the chowder heads would already know it.... Have to pay 1/2 hours labor for that 5 min duty. :(

http://www.dieselplace.com/forum/showthread.php?t=227103

They said they did the vent tube recall inspection too - Anything to get paid for warranty work huh, since I had already done that and sent the card to GM long ago.

:cool:

JIMMMY

06-03-2008, 03:34 PM

No change in MPG dudes........... But it is sweet to not have the TPM flashing at me after a full year nearly to the day of living with it......... ***PRICELESS***

rcpd34

06-03-2008, 03:46 PM

No change in MPG dudes........... But it is sweet to not have the TPM flashing at me after a full year nearly to the day of living with it......... ***PRICELESS***

Why do you want your tire pressre so low?

blamkin86

06-03-2008, 03:49 PM

No change in MPG dudes....

From reading this thread, the recall doesn't address mileage.

I was going to say yours is remarkable, but mine just keeps getting better -- I bet at 60mph with a topper I'd be at 21 for certain.

gilbertLMM

06-03-2008, 03:56 PM

i just have my reflash 08142 yesterday on my 2008 LMM , and now I can' t tune with my PPE anymore..... I hope PPE can find some issues.

JIMMMY

06-03-2008, 04:06 PM

Why do you want your tire pressre so low?

Lower pressure when empty = more patch on the road:

Smoother ride.

Better tire wear.

Safer - quicker stops.

Damaged less easily than an over-inflated tire for given weight.

No effect on MPG.

Look at your tire mfg'rs recommended pressures at what weights per tire (found posted on the tire mfgr's site or here in some tire pressure threads). You will see 60psi front and 80psi rear is way too much to run when empty.

My Rig's Scale weight: 7,360

Rear Axle: 3,040 (Front Axle: 4,320)

(Fuel full, canopy, step bars, bed mat, and 200 lb driver).

blamkin86

06-03-2008, 05:15 PM

Smoother ride.

x2.

First time down a gravel road, with the rears at 80, I about spun the stupid thing. It's really dangerous that way...

... I think a lot of people air 'em differently when towing.
... and I also thought you could reset the 'intended' air setting yourself on the DIC, yourself.

tim742000

06-03-2008, 06:10 PM

i just have my reflash 08142 yesterday on my 2008 LMM , and now I can' t tune with my PPE anymore..... I hope PPE can find some issues.

I spoke with Dan at PPE today and he said they are a few days away from fixing it and you would probably have to send you programer back to them to be updated

goodwrenchtech

06-03-2008, 06:59 PM

I spoke with Dan at PPE today and he said they are a few days away from fixing it and you would probably have to send you programer back to them to be updated
Wow getting tired of sending it in for updates, time for efi Live.:D

gilbertLMM

06-03-2008, 07:05 PM

i think DAN PPE don't know is business, i spoke to TECH SUPPORT PPE and they already fix the problem, FIRST put your tuner to ( BACK TO STOCK ) SECOND download the last version 2.35 in the tuner, and make burnout !!!!!! great

TOMMAN58

06-03-2008, 08:02 PM

Had the upgrade done today, painless, same mpg and everything else.
Talked to service and saleguy over coffee, they said my mpgs on mine were average and both thought GM would have other changes in near future to get even better mpg.
I am not complaining and truck now has 5K on it and mileage keeps getting better.
18.5 at 74mph
23 at 64mph
15.8 to 17 in the city

11.6 at 64 w/ 8000# trailer, hit 12 yesterday flat land no head wind.

fire0021

06-03-2008, 08:29 PM

fire0021

06-03-2008, 08:29 PM

Wow getting tired of sending it in for updates, time for efi Live.:D

X2:D

cujo489

06-03-2008, 10:28 PM

got mine re-flashed this morning. took about 30 minutes i think. i asked about it and the writer just said it was for the no start problem. there has been some issues, GM figured out the problem and the fix, so they are taking care of it. not sure if this is true or not , but what do i know. i'm guttin the DPF and downloading the Quad in the morning now that the re-flash is done. :D hope it takes, i will let ya'll know
__________________

Joy22toyhaulerhauler

06-04-2008, 02:14 AM

No change in MPG dudes........... But it is sweet to not have the TPM flashing at me after a full year nearly to the day of living with it......... ***PRICELESS***

Our TPMS just stopped flashing after a couple months? You can still read the pressures in there, it just doesn't go off first thing anymore. I don't need the thing anyway. :rolleyes:

Fulton 1

06-04-2008, 09:35 AM

FXRS

06-04-2008, 09:48 AM

Occitiger

06-04-2008, 10:58 AM

Does it seriously matter if this new tune is solely meant to block aftermarket products?
When we are all deciding wether or not to buy one of the news one just over a year ago, the word at the time was that it would be impossible to add aftermarket stuff to these new trucks.

I promise you, no piece of code in-penetrable. Security companies pay super coders millions of dollars to right software to make it harder to 'break in' to a computer or network (note I said harder, not impossible). Seriously, do you think GM is spending millions of dollars to your Quad won't work? I doubt it. So even if this update is to do nothing more than keep out tuners, it will only be a matter of time before someone figures it out.

jwoltz

06-04-2008, 11:33 AM

x2. With the issues the company (GM) is having now, laying off 10k and closing 4 plants, they cant dump money into a "program blocking task force :banghead: wouldn't make sense if a were a stock holder!

I think they are probably focused on how to sell these trucks in the current economy imo. Debugging them and finding ways to make them more efficient under EPA and ARB spec's.

D/AChris

06-04-2008, 12:05 PM

Please do report back. I am still waiting on having the reflash done until I hear some confirmation on the Quad working.

Quad has always been working with the new GM update. Many posts already stating Quad works. I've even posted emails from Quad about the new GM update stating it still works. :D Chris

JIMMMY

06-04-2008, 04:48 PM

I got my letter the other day. Probably take it in one of these days.

I don't come here every day but was thinking yesterday. I haven't seen any post about the stock ecm unit preventing the truck from starting. I mean with all of the people here you would have thought there would be a post or two about that problem.

Unless I missed those threads. :rolleyes:

GM says the more miles the more likely no start........ Yet DutchPilot has over 100,000 miles with no issues....... :eek:

http://www.dieselplace.com/forum/showthread.php?p=2659720#post2659720

;)

cujo489

06-04-2008, 04:48 PM

updated the Quad with new up date this morning. i removed the DPF today and loaded up the Quad. it took about 3 hours w/ lunch, started right up no lights. :D took her down the road, normal driving and no issues. i am going to run the 70 hp tune for now. she did blow some smoke though. hope it aint to bad pulling the boat. i will find out tomarrow. thanks again to all for the help and good advice.

06Dmaxpwr

06-04-2008, 07:15 PM

For us EFIers...you need to extract a few files before you can work with the new OS...check out EFI's forum for the files....http://forum.efilive.com/showthread.php?t=8161&highlight=12628594...

I tried on a guys truck earlier and EFI didnt work although the Quad did work

2008 LMM Operating System - 12628594

FXRS

06-04-2008, 08:57 PM

Yea I've got 18,000+ on mine and no problems.

GM says the more miles the more likely no start........ Yet DutchPilot has over 100,000 miles with no issues....... :eek:

http://www.dieselplace.com/forum/showthread.php?p=2659720#post2659720

;)

rcpd34

06-05-2008, 07:08 AM

Well I had the problem with less than 3K so go figure...

SoylentGreen

06-05-2008, 02:22 PM

Took my truck into the dealer this morning for the update and my Quadzilla worked fine afterwords.

Here is what I did:

1. Returned the truck back to stock.
2. Downloaded and updated the Quad with version 2.42.
3. Took the truck in and had them install the ECM update.
4. Hooked up the Quad and re-programmed the truck.

Worked just fine.

thewhitewhale

06-05-2008, 03:21 PM

So did EFI get around the lockout?

06Dmaxpwr

06-05-2008, 03:47 PM

So did EFI get around the lockout?

Yes, you just need to add a few .cal files (2) into your config. folder....read my post above....:rolleyes:

thewhitewhale

06-05-2008, 04:33 PM

MUD SLUT

06-05-2008, 04:53 PM

Just got off the phone with Dan at PPE. Their update ver 2.35 will work for Economy, Standard, and Hot. Hot Race and Hot +2 ET Race will have to send their tuners to PPE directly. Damn, lucky I didn't cut that dpf just yet.;)

Update here. Program back to stock first.
http://www.pacificp.com/update/lmm/

thewhitewhale

06-05-2008, 05:02 PM

I just keep waiting for the dust to settle, then efi and my dpf will probably just fall off. I'm sure by then gm will come out with their 20th update that includes a web cam under your ride.

rcpd34

06-05-2008, 05:21 PM

Edge advises a couple of weeks for their update to be finished. I'm gonna wait until then to do the ECM reflash.

slickzone

06-05-2008, 08:38 PM

Had the dealer do the updates today,i just got off the phone with dan,he said to do the update online.I did the update online,did a level two install on the truck and all is good:),thanks dan

jlsworks

06-05-2008, 09:40 PM

I'll be getting my ECM update when the Edge update is ready too.

James

andy63830

06-05-2008, 09:47 PM

Are all of the trucks that fall in the vin# category to have the reflash bound to eventually have trouble, or is it hit or miss? I really dont want to take my exhaust back off if it is not completely necessary. i know there is no real answer to this question, but would like input

rsnbrgr

06-05-2008, 09:49 PM

I use the SuperChip 2808 and experienced no problems with the ECM upgrade. Like SoylentGreen, I returned the truck to stock profile, let the dealer do the upgrade, downloaded the latest SuperChip update, re-read the stock profile into it, then uploaded the mods. Drove it all over town today without problems.

GARTHGMC

06-05-2008, 10:10 PM

NOt to hijack, bringing it in Monday for the upgrade. 11 k no issues to date. After this , i am going to be looking for a tuner, for two things,
1) eliminate turbo lag
2) increase economy,
already have gotten over 23 mpg on highway at a sixty five(flat) no tow CC short bed covered, so thats going to be a tall order, but it is definetly possible with the unneccessay regens and all.
Well , suggestions anyone:eek:

jpat209

06-06-2008, 01:25 AM

Im tempted to bring my truck in and get it updated without putting the DPF back on and just removing the tuner. I honestly can't see them giving me any problems.

What do you guys think?

oconnorstp

06-06-2008, 09:32 AM

Im tempted to bring my truck in and get it updated without putting the DPF back on and just removing the tuner. I honestly can't see them giving me any problems.

What do you guys think?

I asked that question the service managers at the dealer I bought the truck and and the dealer where I get it maintained. Both of them were very cool with the idea of working on the truck with mods. So, if I get a tuner and a turbo-back exhaust, I'm planning to just run it in there and let them work on it -- with instructions to call me if they need to flash the ECM.

Fulton 1

06-06-2008, 10:24 AM

andy63830

06-06-2008, 12:54 PM

I Called My Gm Service Tech And Ask Him About The New Recall And If He Would Work With Me Since I Have Straight Exhaust With No Dpf. He Said To Bring It To Him And We Could Put It Back To Stock With My Tuner (quad) And He Would Do The Reflash Right There. Then Reload My Quad Tunes Before It Ever Leaves The Dealerships Shop. Now Thats Cool. Ive Been Worried That I Was Going To Have To Pull My Exhaust Back Off.

hookdOnDmax

06-06-2008, 08:42 PM

. . . He Said To Bring It To Him And We Could Put It Back To Stock With My Tuner (quad) And He Would Do The Reflash Right There. Then Reload My Quad Tunes Before It Ever Leaves The Dealerships Shop . . .
Good on ya~!
I just had the local Stealership flash the ECM and adjust my TPMS. Before taking it in I used Quad's 'Return to Stock' but I left the EdgeEvo monitor on the dash and plugged into the ECM port. No complaints from the Stealer. The ECM flash 08142 was billed as warranty work, at no charge.

But adjusting my TPMS (Fronts 55, Rears 50) was billed at $155. :eek:
Any debate as to why they're called Stealers?~!! :rippedhan

P.S. my official local Stealership ... Dublin Pontiac/GMC, Dublin CA (NorCAl area)

JIMMMY

06-06-2008, 09:25 PM

.

But adjusting my TPMS (Fronts 55, Rears 50) was billed at $155. :eek:
Any debate as to why they're called Stealers?~!! :rippedhan

P.S. my official local Stealership ... Dublin Pontiac/GMC, Dublin CA (NorCAl area)

WOW - They saw you coming too. When they gave me the song and dance of covering the mechanics time at $105.00 an hour - I handed them the GM process printed from the TPM link off this site..... And said I am NOT paying an hours labor for a 5 minute job. We met in the middle at 1/2 hour which came to $55.00 out the door....

http://www.dieselplace.com/forum/showthread.php?t=227103

GM Bulletin: 06-03-10-011

Using the Tech 2, follow the steps listed below to select the appropriate tire type/pressure:

1. Install the scan tool.

2. Turn ignition ON with the engine OFF.

3. Enter “Diagnostics” and build the vehicle according to model year, vehicle line, etc.

4. Select: “Body”.

5. Select “RCDLR Module.”

6. Select: “Module Setup”.

7. Select: “Tire Type/Pressure Selection”.

8. Select P-Metric Standard.

9. Select the front and rear tire pressure as noted on the new vehicle driver door placard sticker for the accessory wheels/tires.

10. Verify that the selections made are correct and press the enter key. The scan tool will flash
“Procedure in Progress”, then display “Procedure Complete.”

11. Press the “exit” key to escape.

Dragon

06-06-2008, 10:17 PM

I had some warranty work done recently and I got this recall notice before I got around to putting the PPE tune back on so I took the truck in for the update a few days ago.
I downloaded the new files from PPE and installed them on the Excelerator. I hooked it up to the truck and followed the instructions just like before but it froze on Installing Tune, etc. DO NOT DisturbEE. The DIC also started flashing Check Trailer Brake System at the same time. I did have my trailer hooked up at the time and I unhooked it while the tuner was programming but it doesn't even have any brakes so nothing should have happened when I pulled the trailer plug out. I left it for almost an hour until I got through to Dan at PPE and he said to turn the switch off and unhook the programmer then start the program over again, no need to set it back to stock first. When I hooked it back up and checked the current tune, it showed the tune, speed, & tire size I had selected to program the first time but I went ahead and tried to program it again. This time the DIC gave another message, something about 4 Wheel Drive and it stuck yet again on DO NOT DisturbEE. I unhooked it, followed the instruction booklet about "XX" codes, started the engine and let it run for a minute then tried to program again. The DIC went back to the Trailer Brake message and the Excel went no further than DO NOT DisturbEE. I'm starting to get worried now but I did a trans relearn and took it on the highway to see if it had the tune or not. I'm really not sure because on the open highway at 65 it doesn't seem to have any more than it did stock (I could really tell a difference when I tuned it a few months ago) but when I pulled back onto the road that comes to the house it acted like it had a little more at slower speeds. Now I'm really confused and read the manual from front to back again. When I got to the part about Stock Tune vs. Back To Stock I started wondering if I screwed up and just wrote the stock tune on before I went to get it serviced instead of going back to stock. If that's the case, should I have been able to update the PPE from the internet files and would the dealership have been able to flash the PCM without seeing something "wrong"? Wouldn't the PPE give a warning or something when it went to check the VIN #? I know I wrote a novel but I'm not sure what to do at this point and I've got a race tomorrow evening so I'm starting to get desperate. Any ideas? TIA

minnesotaroofin

06-07-2008, 12:09 AM

Mine did the exact same thing after recall and update - I did 2 things. first i pulled my hitch - second I hopped in truck turned key forward turned off lights then without turning key back i plugged in the ppe - it showed level 2 tune but this was where it froze previously on the DisturbEE - I picked level 1 tune then installed level one installed i turned key back unplugged - started truck 1 minute shut it off opened then shut door to turn off any accessory turned key forward turned lights off manually plugged in ppe - picked level 2 tune - tire size - installed fine this time

i also have always pulled fuses info - rdo

Anyway to make it short try going to level 1 then back to 2

minnesotaroofin

06-07-2008, 12:11 AM

oh i also disabled the back up sensors when i shut lights off.

hmarashi

06-07-2008, 01:43 AM

probably an excuse to come out with a more tightly-locked operating system to stall the tuners.

GM releasing a software update to give better mileage seems a little too good to be true.....

How prophetic those words are!
I tried loading my ppe tuner on after the update. One change I noticed was instead of the speed limiter automatically going to 200mph, you now have the abiltity to increase the limiter to any value in 1mph increments. Also, after loading tune, the truck would not start. I returned it to stock and it fired right up. Reloaded tow tune, and would not start again. It also threw a dtc of 2510.
I cleared the code & am now back to stock.

hookdOnDmax

06-07-2008, 03:03 PM

Same day my Stealership flashed the 08142 on my ECM, I went home and installed the latest Quadzilla update #2.42. It refused to install first time, so I turned off the radio and Climate control, closed the driver door, tried a second time. This time it ran like clockwork.

Rather than the familiar Do Not DisturbEE, mine now showed Do Not DisturbCC ... ???
However, it installed without a hitch, tuner +90hp, tire size 33, speed limiter at 200 MPH.

Seems as if Quadzilla has it all-together ... I'm happy as a clam~! :D

hookdOnDmax

06-07-2008, 03:08 PM

WOW - They saw you coming too. When they gave me the song and dance of covering the mechanics time at $105.00 an hour - I handed them the GM process printed from the TPM link off this site..... And said I am NOT paying an hours labor for a 5 minute job. We met in the middle at 1/2 hour which came to $55.00 out the door.....
Yep~!
Know what Jimmy, I printed out those same instructions, but forgot to take it with me. Also MY BAD ... I didn't notice the pending charge ($155) when I signed the work order.

Once at the Stealership, I explained several times how I wanted the TIRE WARNING system adjusted ... NOT my tire pressures~!!! At day's end, they told me they THIINK they got it all corrected. I found the nagging-DIC is now quiet, AND my tire pressures (max 65) had all been reduced to just above my new targets ... Front 55, and Rear 50. Oh well~!!

jeazor

06-07-2008, 07:42 PM

I know that its not legal for the dealerships to lower the threshold of the Tire montering system without changing the placard on the door jam, so if you guys are getting it done just be glad. But as far as charging anything come on a few mins time with tech 2 and yr done. After all you are customers of the dealership.

JIMMMY

06-07-2008, 08:19 PM

Should/would not want the door jamb sticker changed - should/will still air up to 60/80 if hauling enough weight.

jeazor

06-07-2008, 08:29 PM

I think the whole TPS system is a joke but if someone gets in an accident with a vehicle that has the sensors the state police here in PA are suppose to find out if it was a tire failure and if the TPS was working properly and if it gets back to the dealer he is in big trouble. I guess we can thank Ford and their explorers for this crap.

hookdOnDmax

06-08-2008, 10:14 PM

Should/would not want the door jamb sticker changed - should/will still air up to 60/80 if hauling enough weight.

Errrr ... not necessarily. My upsized tires are E-rated Pirelli ATRs, 305/55SR20.
But their max pressure (on sidewall) shows 65 psi, so that's my new max.
For no-load driving, I like them at 60 fronts, 52 rears. ;)

MUD SLUT

06-09-2008, 07:32 PM