Originally Posted by skitilldark
I haven't bought the coil or ECM yet so I am definitely interested in GM sourced parts. Any idea on how to identify the GM numbers for the LTR? I want to try your idea and replace that 1/4 coil pack because I think that will solve it. Maybe I can avoid the ECM altogether.
Isn't the part number on the coil pack?
Google for info about how to test the IC module, too.