octaneman

General Motors ECM processors usually consists of a EPROM ( Electrical Programmable Read Only Memory) or a Flash Prom and a driver. To successfully test the EPROM it must be set on a electronic bread board connected to a circuit. Depending on the circuit configuration, taking the voltage readings on the VCC side of any IC may give a false positive because the circuit will require other inputs in order to affect it. The EPROM can be erased in one of 2 ways, either electronically or by using a U.V light. ECM voltages do not go above 14V anything higher will burn the ECM, so I'm not sure how you tested it, if there is a way to test the ECM just by probing the pins you mentioned then I'm not aware of it. The cam and crank sensors only do one function: 1) The crank sensor tells the ECM that the piston is at TDC and 2) the cam sensor tells the ECM when to give the spark at the coil(s). If either of them are open, or shorted the computer will set a no start condition and the engine will not start at all. After you re-seated the IC's with the compound, the ECM codes were completely erased when power was interupted, and i'm curious to know if the check engine light now comes on at ignition start. If you can get the numbers off the IC's and posting them, the manufacturer of those ICs can be identified.