Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello. My name is ***** ***** I will be helping you today.
What do you mean last time? Is the car starting now?
Why do you suspect the PCM?
Did the system give you some indication I was not here?
When it wont start do you have power to the fuel pump?
What brand pump did you put in?
Are you willing to pay for another question if your assumption is wrong and we have to start all over?
Then you check for power to the relay on both the control side and the feed and you check to see if its getting a ground signal. If thats good you see if you can bypass it and get the fuel pump to run.
If that works you check the control circuit at the pcm. If its coming out of the PCM and not making it to the relay you find and fix the wire.
If its not coming out of the PCM you replace the PCM.