DTC Glow plug problem - Chevy and GMC Duramax Diesel Forum

06-07 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 10 (permalink) Old 12-27-2011, 02:54 PM Thread Starter
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DTC Glow plug problem

Ok, last month I got a engine light come on and I go to check it out and it said "cylinder 7 glow plug". No biggie, I change it and reset the codes and now it says "cylinder 7,3 glow plug". Ok maybe the cylinder 7 glow plug was bad. So I order some more and last weekend, I changed the 3 and 7 cylinder glow plugs and still getting the same message. Also before, the glow plug light will stay on for a long time. Usually it would take 3 secs and it will turn off. I did hear something about the glow plug module going bad and it will make the light do a 18 sec delay. Could it be the module? This happen to anyone? Please help!!!

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post #2 of 10 (permalink) Old 12-27-2011, 04:41 PM
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could be, but it will throw another code

you can check it with a test light. hit the contacts while someone works the key

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post #3 of 10 (permalink) Old 12-27-2011, 04:47 PM
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Sounds like the glow plug module to me, seen this before on customers trucks. I'd test it before condemning it though.


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post #4 of 10 (permalink) Old 12-27-2011, 08:08 PM
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Maybe you changed the wrong one--- Just to post something.

driver's side-- 2-4-6-8------Passenger side 1-3-5-7. So #7 in under the fuel filter.

The 06 trucks did have glow plug problems-- GM did do many on warranty, and had a TSB for a reflash.

Moved to LBZ, not a 911 problem.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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post #5 of 10 (permalink) Old 12-27-2011, 09:14 PM Thread Starter
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Originally Posted by jc1843 View Post
Maybe you changed the wrong one--- Just to post something.

driver's side-- 2-4-6-8------Passenger side 1-3-5-7. So #7 in under the fuel filter.

The 06 trucks did have glow plug problems-- GM did do many on warranty, and had a TSB for a reflash.

Moved to LBZ, not a 911 problem.
Really...I thought it was the other way. I think I will just change all of them.

2006 Chevy Silverado ..LBZ..mbrp 5" turbo exhaust (no muffler or cats) modified stock air intake, EFI by Kory Willis, Big Dipper stage IV trans, Precision ML, Pump rub fix, Alligator trans lines, Autometer guages, Airdog II-165, Ready Lift leveling kit, 285/75 Nitto Dune Grappler, Bilstein shocks, Cognito idler and pitman arm braces, PPE tie rod sleeves, fingerstick, blocker plate, pvc reroute,air intake regulator blocked, Banks boost tube, All Amsoil fluids.
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post #6 of 10 (permalink) Old 12-27-2011, 09:50 PM
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Quote:
Originally Posted by tmm403 View Post
Really...I thought it was the other way. I think I will just change all of them.

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post #7 of 10 (permalink) Old 12-28-2011, 02:15 AM
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Originally Posted by tmm403 View Post
Really...I thought it was the other way. I think I will just change all of them.

If you need a set let us know and we will get you a set shipped out. I have to replace 4 myself but just doing all 8 and being done with it.

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post #8 of 10 (permalink) Old 12-28-2011, 09:59 AM Thread Starter
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Thanks for the help. I have extras and will replace tonight when I get home. Thanks guys

2006 Chevy Silverado ..LBZ..mbrp 5" turbo exhaust (no muffler or cats) modified stock air intake, EFI by Kory Willis, Big Dipper stage IV trans, Precision ML, Pump rub fix, Alligator trans lines, Autometer guages, Airdog II-165, Ready Lift leveling kit, 285/75 Nitto Dune Grappler, Bilstein shocks, Cognito idler and pitman arm braces, PPE tie rod sleeves, fingerstick, blocker plate, pvc reroute,air intake regulator blocked, Banks boost tube, All Amsoil fluids.
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post #9 of 10 (permalink) Old 12-28-2011, 04:03 PM
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GM numbers the cylinders from the front to the back. So if you look at the back of the engine-- the driver's side head is further back, and closer to the firewall. The passenger side head is further forward. so that starts the numbers-- as #1.

The other V8s from General are different, and #1 on those, is the front on the driver's side.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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post #10 of 10 (permalink) Old 12-08-2014, 07:58 PM
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I have a 2011 Silverado 2500HD Duramax LML and my number 7 glow plug threw a code. It only has 79000kms on it. Could it just be a faulty one? How long should they last? This is my first diesel.
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