Hello everyone! Ecm question please
I was told that an ECM will rarely go bad on its own and that there is usually a outside cause( a short in the wiring, a voltage spike etc. etc.) Is this true? when replacing the ECM is it neccesary to replace the prom also? Or is it moved to the new ECM from the old one? Do they go bad? My second question is a rather easy one, is the ECM located behind the glovebox or behind the passinger kick panel on a 91 bonneville. I'm haveing some real issues with the car and as you can tell I'm in no way a mechanic. As a matter of fact I just bought my first set of tools lol. I have put them to use though. Replaced the ignition modual, the 3 coil packs,the O2 sensor, the cam sensor, the maf sensor, and gave it new plugs and wires. I won't go into the cars problems untill I get updated post codes so I don't waste your valuable time. Thank you in advance!