autozone did a diagonstic test on my 01 deville. they said i have a bad computer, PCM . i have a PCM from a 02 deville can i use it...

not sure, but it would have to be programmed at the dealership anyways. I'd rather trust the neighbor's 1 year old kid to diagnose my car then Autozone. THEY DON'T diagnose anything. They just steer people into buying cheap parts they don't need for their car.