Strange LBZ glow plug issue - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

Duramax Third Generation: 2006-2007.5 (LBZ & LLY) Discuss the third generation (2006-2007.5 LBZ & LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion also belongs in this forum due to the similarities of the 2006 LBZ and the 2006 LLY. Engine related discussion ONLY.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 11-09-2015, 12:30 PM   #1 (permalink)
RockHopper
Clutch
 
Join Date: Jun 2007
Posts: 55
iTrader Score: 0 reviews

Strange LBZ glow plug issue

Ok, so i have a strange issue going on that's driving me bat **** crazy. My '06 LBZ has about 90,000 miles on it and about 2 months ago a check engine light came on. It showed code P0675 (#5 glow plug circuit) so i went to NAPA and they sold me an Autolite glow plug. I replaced the glow plug and within a few driving cycles the light came back on and it now showed P0675 and P0673. I checked the ohms on both cylinders and #5 was fine but #3 showed high so i replaced #3 with a AC Delco plug from NAPA and when they told me this was the factory plug i wondered if the Autolite plug was either bad or my truck just doesn't like it. So a few weeks go by and i finally get fed up with the Autolite and replace it with an AC Delco plug and no more code.

Today, i went to start it and the glow plug light stayed on and of course the check engine light did as well after started. Now it's throwing P0677 (#7 glow plug circuit).

What in the hell is going on?

I checked with the dealer and they said the truck had already been re-flashed after the glow plug system recall.

I have only put less than 1000 miles on it since the first plug went out. Is it common that they would all go out together? Why are only the passenger side plugs having issue's?

Any help would be appreciated.

__________________
2006 Chevrolet 2500HD 4X4 CCSB 6.6 Duramax LBZ
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-10-2015, 08:41 AM   #2 (permalink)
Ramblinrodney
Diesel Veteran
 
Ramblinrodney's Avatar
 
Join Date: Sep 2006
Location: Midland, MI
Posts: 5,229
iTrader Score: 0 reviews

Michigan Oil Burners Member

Quote:
Originally Posted by RockHopper View Post
I have only put less than 1000 miles on it since the first plug went out. Is it common that they would all go out together? Why are only the passenger side plugs having issue's?

Any help would be appreciated.
That's why most people recommend if one goes bad replace all on that same side/bank and some say replace all eight.
Remember when our trucks were new and under warrenty. If one glow plug went bad the dealer would replace all eight under warennty.
https://www.dieselplace.com/forum/63-...glow-plug.html

__________________
07 Chevy Classic 2500HD 4x4 2LT LBZ CC/SB White
Nasta Nerf Bars, Line-x, Rancho RS9000XL Shocks, Firestone air bags, Fold-a-cover,
Good/Year Wrangler S/A 265/75/16 E
Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
Custom Perf/Tow Tune by Kennedy
2019 Arctic Fox 27-5L 10,500 dry weight
UAW Local 699 Retired Test Technician

Last edited by Ramblinrodney; 11-10-2015 at 09:01 AM.
Offline   Reply With Quote Quick reply to this message
Old 11-16-2015, 12:31 AM   #3 (permalink)
RockHopper
Clutch
 
Join Date: Jun 2007
Posts: 55
iTrader Score: 0 reviews

Ok, I replaced all of them. Let's see if that fixes the issue.

That #4 glow plug isn't easy to replace. I was able to get a small ratchet jammed between the steering shaft and glow plug and naturally it was the tightest of all of them. Using a box end wrench over the handle of my ratchet i was able to use the box end as a lever and provided enough torque to break the glow plug free.

Took me about 90 minutes to do 4 on the drivers side and about 15 total to do the passenger side including removing the wheel well.

Fingers crossed.
__________________
2006 Chevrolet 2500HD 4X4 CCSB 6.6 Duramax LBZ
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-16-2015, 11:57 AM   #4 (permalink)
gmsumsion
Block Heater
 
Join Date: Jul 2010
Posts: 16
iTrader Score: 0 reviews

I have a similar issue except that my truck threw all 8 glow plug codes at once. Could there be something else causing those codes or should I just go ahead and replace all 8?
Offline   Reply With Quote Quick reply to this message
Old 11-16-2015, 05:23 PM   #5 (permalink)
GMan02GMC
Diesel Fanatic
 
GMan02GMC's Avatar
 
Join Date: May 2012
Location: South of Houston, TX
Posts: 116
iTrader Score: 0 reviews

All eight at once seems really strange. I would pull the battery leads and let the computer reset and then see what code comes back.
__________________
2006 GMC LBZ/Allison 4x4 Crew Cab, White, Rancho Lift, 325 Yoko A/Ts on 20's, DSP5, ECM by Duramaxtuner.com, S&B CAI, 4 inch MBRP, Sulastics . . . and a carseat in the back.
Offline   Reply With Quote Quick reply to this message
Old 11-16-2015, 10:31 PM   #6 (permalink)
Ramblinrodney
Diesel Veteran
 
Ramblinrodney's Avatar
 
Join Date: Sep 2006
Location: Midland, MI
Posts: 5,229
iTrader Score: 0 reviews

Michigan Oil Burners Member

Quote:
Originally Posted by gmsumsion View Post
I have a similar issue except that my truck threw all 8 glow plug codes at once. Could there be something else causing those codes or should I just go ahead and replace all 8?
Fill in you signature.
All 8 at once, something else is going on.
Have you had the Glowplug recall update? This should of been done back in 06
06522 - REPROGRAM GLOW PLUG CONTROL MODULE
How old are your batteries?
Could be a GPCM going south.
__________________
07 Chevy Classic 2500HD 4x4 2LT LBZ CC/SB White
Nasta Nerf Bars, Line-x, Rancho RS9000XL Shocks, Firestone air bags, Fold-a-cover,
Good/Year Wrangler S/A 265/75/16 E
Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
Custom Perf/Tow Tune by Kennedy
2019 Arctic Fox 27-5L 10,500 dry weight
UAW Local 699 Retired Test Technician

Last edited by Ramblinrodney; 11-16-2015 at 10:35 PM.
Offline   Reply With Quote Quick reply to this message
Old 11-17-2015, 01:23 AM   #7 (permalink)
gmsumsion
Block Heater
 
Join Date: Jul 2010
Posts: 16
iTrader Score: 0 reviews

I'll try to figure out the signature thing the truck is an '07 that I bought used in 2010. I do not think it had a recall done. Does the recall apply to the early 2007s?

Batteries are about 1 year old. I will try disconnecting and reconnecting the leads.
Offline   Reply With Quote Quick reply to this message
Old 11-17-2015, 08:43 AM   #8 (permalink)
Ramblinrodney
Diesel Veteran
 
Ramblinrodney's Avatar
 
Join Date: Sep 2006
Location: Midland, MI
Posts: 5,229
iTrader Score: 0 reviews

Michigan Oil Burners Member

Quote:
Originally Posted by gmsumsion View Post
Does the recall apply to the early 2007s
Models: 2006 CHEVROLET SILVERADO, EXPRESS, KODIAK
2006 GMC SIERRA, SAVANA, TOPKICK
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.
__________________
07 Chevy Classic 2500HD 4x4 2LT LBZ CC/SB White
Nasta Nerf Bars, Line-x, Rancho RS9000XL Shocks, Firestone air bags, Fold-a-cover,
Good/Year Wrangler S/A 265/75/16 E
Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
Custom Perf/Tow Tune by Kennedy
2019 Arctic Fox 27-5L 10,500 dry weight
UAW Local 699 Retired Test Technician

Last edited by Ramblinrodney; 11-17-2015 at 08:43 AM.
Offline   Reply With Quote Quick reply to this message
Old 12-15-2015, 01:56 PM   #9 (permalink)
RockHopper
Clutch
 
Join Date: Jun 2007
Posts: 55
iTrader Score: 0 reviews

An update....

After replacing all 8 glow plugs. The CEL is off and has stayed off. Doesn't make a lot of sense to me. Maybe replacing just the 4 on that side would have fixed it but I figured why take the chance on letting the others get old and possible break. It's cheap insurance.
__________________
2006 Chevrolet 2500HD 4X4 CCSB 6.6 Duramax LBZ
Offline   Reply With Quote Quick reply to this message
Old 12-15-2015, 06:13 PM   #10 (permalink)
Super8
Clutch
 
Join Date: Sep 2014
Posts: 62
iTrader Score: 0 reviews

Just a reminder for those needing to replace glow plugs, AC Delco are the recommendation for a reason. I did the same as the OP and the Autolite doesn't work and will cause the CEL. Also I read somewhere that just because it says a certain cylinder is the problem there is no absolute guarantee that is accurate you need to test each to find the naughty one.

__________________
2006 3500 Cab Chassis, Allison, 4x4, LBZ, 122K, Reading Classic II box (3000Lbs)
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
glow plug issue plaguing me, need help sailinstud420 Duramax Fourth Generation: 2007.5-2010 (LMM) 20 02-16-2016 01:11 PM
LBZ: I changed my #4 glow plug today tjg Duramax Third Generation: 2006-2007.5 (LBZ & LLY) 12 12-09-2015 03:53 PM
LMM: Glow Plug Replacement Issue jspafford Duramax Fourth Generation: 2007.5-2010 (LMM) 4 10-20-2015 05:28 PM
Possible Short? Glow Plug and Low coolant lights stay on FOREVER! jkbowen 6.2L Diesel Engine 32 10-03-2015 12:30 AM
LML: Poor Qual DEF & Glow plug bad navybanker Duramax Fifth Generation: 2011-2016 (LML) 5 09-16-2015 05:39 PM


All times are GMT -4. The time now is 10:27 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide