Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
hi the fuse is ecm1 or pcm1 ?
you think you can fix it with the schematics for this fuse ?
I can send you that.
ok I will send it over in a few.
ok I wont be able to send it until later this afternoon, is that alright ?
Here is the diagram ?
Has any work been done lately under the car, muffler, trensmission etc ?
Are your engine mounts broken ?
My guess is a harness is shorting out when the engine moves because of the transmission being put into reverse. It should be grounding out near the exhaust since it does it mainly when its hot and the chaffed wiring if any is most vulnerable.
If I had to bet I would go for the engine harness contacting the exhaust at some point in the car..the PCM is very unlikely to be the culprit