Lml glow plug control module

[whitegmc06]

I have a 2011 lml that is having issues with the Regen process, nox1 and two and cylinder 7 glow plug and is limited to 55mph because it can't do the Regen cycle. I have replaced both nox sensors and the gpcm and I copied the injectors flow rates into the new model but it comes up that is not programmed, what is the process to program? And if I put the old gpcm on it comes up that there is a fault in the model, so I am pretty lost for what I need to do next. Thank you

 

[1FastBrick]

Might have to be programed with GM software. Perhaps it needs a vin or something coded into it along with the injector data. I haven't done an LML so I don't know how sophisticated they are.

Some one else on here might know for sure.

@JoshH might know.
If not, Maybe @Bdsankey or @Chevy1925 might have a clue what an LML Glow plug module needs Programing wise???

 

[JoshH]

Those codes all say "permanent" under status. Do they also come up as current codes? If not, you may need to drive the truck to get it to clear the permanent status.

 

[whitegmc06]

When I clear the codes they come right back

 

[JoshH]

Do they come back as current codes or permanent codes? Permanent codes are not actual codes set in the ECM for a current problem. They're sort of like history codes that will only clear after certain conditions have been met even if the problem is fixed.

 

[whitegmc06]

Ok sorry I know what you mean now, I got it to regen now and it was successful but the check engine light is still on due to the new glow plug control module, it says it's not programmed, I programmed flow rates into it but I think it is more than just putting the injector flow rates into the new model? Isn't it? Probably dealer or use a tech2?

 

[Ron Nielson]

No way around your problem, you must do the install. I would call an independent garage and see what their price is to install the GPCM. Of course, a dealer can do it, but an independent garage will almost always cost less.

 

[whitegmc06]

Ok thank you