Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner till early morning.
Have you monitored the accelerator pedal position sensor readings to see if there is a gradual increase shown or a sudden jump?
If you view all pids through freeze frame on a bar graph, do any readings shown a sudden spike up or down when you touch the throttle?
I would for sure remove all that junk that is destroying the engine. Get the modules back to OEM programming. Then see what is going on. There is not a diagnostic path from GM to follow for a vehicle that is modified, pretty much all diag steps do not apply. I still would like you to do the inspections I mentioned.
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Thanks for using Just Answer, Chris
The ECM is not vin locked but programming is required when swapping.
Hello again Chris here,