• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

PCM Processor Fault

C

CU

Platinum Member
I was sitting at a drive through when the car just shutoff. It started right back up, but the check engine light came on. I went to Advance and had the code read and cleared. It was P0606 PCM Processor Fault. Should I just wait and see if it does it again, or should I take it somewhere. I am leaning toward wait and see, since it seems to being running fine.
 
You should take it to the dealer. PCM Processor Fault is pretty serious. Is the car still under warranty?
 
It is under the extended warranty I bought through my lender. Serious as in how? The Advance guy acted like it was not that bad to just clear it and see if it happened again. I know he is not an expert on GM cars though.
 
You can get a new PCM from PCM4Less with a custom tune for around $200 I think. Not really alot of $$$.
 
I know $200 is not pocket change atleast for me anyway, but when I think of $$$ for a car repair I think over $1000.
 
PO606 is an internal fault.
it might be just a bogus failed integrity check and never come back again....If it does come back, the PCM should be covered under the federal emissions warranty, which is 8 years 80,000 miles.
So if your under by miles take it in to the dealer and have them replace it. Provided the code comes back.....having it erased was not the best choice..🙂
 
That is what I plan to do. If it comes up again, I will take it in. Why was erasing it bad? Was there more to get than just the code? It has about 46K on it for reference. It did some reading up on an envoy forum and there were some firmwares released that said "New calibration to reduce the potential for setting P0335 and P0606." Pretty sure mine does not have this update. So, I wonder if it threw the error code and the computer restarted thus killing the engine. Thanks for the federal emission warranty part. I didn't know about that. Is it the same in every state and what all does it cover?
 
Originally posted by: CU
That is what I plan to do. If it comes up again, I will take it in. Why was erasing it bad? Was there more to get than just the code? It has about 46K on it for reference. It did some reading up on an envoy forum and there were some firmwares released that said "New calibration to reduce the potential for setting P0335 and P0606." Pretty sure mine does not have this update. So, I wonder if it threw the error code and the computer restarted thus killing the engine. Thanks for the federal emission warranty part. I didn't know about that. Is it the same in every state and what all does it cover?
Click to expand...

Erasing it is not bad, its just that the dealer wont replace the PCM unless it comes back.
I guess if it does not come back, its nothing to worry about anyway.
AFAIK,the federal emissions warranty is the same in all states and covers the PCM and the catalytic converters.
I can check more thoroughly when I'm back at work on Monday
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top