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1-9 of 9 Results
  1. General Discussion
    I had a glow plug code come up which was cylinder #4 glow plug was not working... I replaced that glow plug with an new GM AC Delco glow plug , cleared the code and after the next startup the code was back again. Anyone else have the same issue? I know they have a warranty which is 120k or 10...
  2. General Discussion
    About 3 months ago, my engine light came on and I bought a code reader and found out it was something with glow plug #3. The next day, engine light was off and never came back on. I went ahead and replaced glow plug #3 just in case. I live in Florida so it was hot this time of year. Fast forward...
  3. 2017-19 GM T-K2 Platform Powertrain
    So I have 3 glow plug related permanent codes and no warning indication on the dash. Does anyone have any idea why? Truck is acting totally normal, is there any chance the previous owner changed some of the glow plugs and never did a glow plug relearn and therefor I have un-clearable permanent...
  4. General Discussion
    Can somebody explain to me how to test my glow plug controller on a 2007 LBZ. I have a voltage tester. My truck ran a lost communication to glow plug controller code and I just want to make sure my glow plugs aren’t staying on all the time. Thanks.
  5. General Discussion
    Ok here we go My truck: 2007 LBZ Xcab154k miles Has EFI live PPEI chip. Straight pipe, Ram intake, and CAT filter conversion. Threw a “lost communication with glow plug controller” code at the same time my oil pressure gauge stopped working, reads zero all the time. Checked to make sure oil...
  6. 04.5-05 LLY Duramax Powertrain
    So I have a 2005 Silverado with a 04.5 lly The issue I’m having is that the glow plug light only comes on for maybe a second or not at all and I live in Canada in -40 and won’t start. I Have No Codes! Since October I have 2 new batteries and new glow plug module. The glow plugs were replaced...
  7. 2017-19 GM T-K2 Platform Powertrain
    All, I have searched and searched google for the location of the glow plug controller on my 18 2500 l5p. I just bought the truck and keep getting a glow plug 6 open circuit. Ive replaced the glow plug twice and keep getting it. There is some slightly shoddy wiring that goes from the harness to...
  8. Maintenance
    2011 2500HD 6.6l duramax. I’ve replaced all 8 glow plugs cleaned wire terminals and also replaced the Glow Plug Control Module. Code still keeps coming back????
  9. 04.5-05 LLY Duramax Powertrain
    My buddy’s dad has a gmc 2500hd with the LLY. Truck will not start when the glow plug light doesn’t come on. Happens randomly, but if the light doesn’t come on it will not start. When it does come on it cranks and runs fine. Everything else comes on, just not the glow plug light. A shop he...
1-9 of 9 Results
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