dmax help

[cakemoto]

05 with 240 on her.just got back from 1500 mile trip to Utah 2 weeks ago.This last Friday i drove to work like normal truck runing fine...at lunch i get in my truck go to start it and my check engine light is on.just checked the code and its p0670.glow plug module control circuit.truck still starts fine every time so far.Anyone ever go through this,should i just replace it? thanks for help in advance

 

[STV_Keith]

05 with 240 on her.just got back from 1500 mile trip to Utah 2 weeks ago.This last Friday i drove to work like normal truck runing fine...at lunch i get in my truck go to start it and my check engine light is on.just checked the code and its p0670.glow plug module control circuit.truck still starts fine every time so far.Anyone ever go through this,should i just replace it? thanks for help in advance

Most diesels will start in temps over 40*F or so without glow plugs or grid heaters. If you can live with the light, you probably won't even notice the issue.

 

[cobra rich]

My 04 1/2 LLY, 165K miles had the same code a month ago. Found an AC Delco module on E-bay for about $80. Easy to change, working great.... BTW, I have never had to change a glow plug yet.... Hope this helps...

 

[Luvnlife]

If it's a California truck just change the glow plug. Easy to do under 20 bucks. If it's a non smog truck prob the module. I go through 2 or 3 plugs a year.

 

[Loony Toon]

I go through 2 or 3 plugs a year.

WTF??
My 05 has 240,000 mi and I haven't change one plug yet. 11+ years

 

[Luvnlife]

WTF??
My 05 has 240,000 mi and I haven't change one plug yet. 11+ years

Go figure. I just change them myself. Throws the code I use a test light to figure which one swaps out in ten minutes.

 

[Havafewinsider]

Call the dealer might still be under warranty. I beleive their was a service bulletin and Chevy extended out the warranty im not sure what the extension was but it might be worth a call.

 

[Kailuaboy89]

May not be the module, could be a dirty connector, or harness issue. or as a few have said a glow plug issue. I would do some more diagnostic work before throwing parts at her, make sure you check the battery connections and connectors for cleanliness. if you have the means take a look at the freeze frame data and see what the conditions were when the DTC set.

 

[COCA COLA COWBOY]

I had the same issue, it was the module. You can test each plug, but it's a pain in the ass and more than likely is the module.