Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Is there a security message or light on or flashing? If so, can you try a different key?
If not, let me get the wiring diagram and see if this can just be a single fuse blown.
Here is the wiring diagram for the starter.
Here is the fuel pump relay,
If the fuel pump fuse 12 is hot all the time, it's most likely the signal that is missing from the pcm. First check all of those fuses.
Can you explain what you meant by "Crank fuses changes from ground to power"?
I have no idea what that means.
Anyhow, did you try a new starter relay and/or a fuel pump relay, also?
Well then, the fuel pump relay ground is G102 and the starter relay ground is not grounded actually. It goes to the PCM.