Ok, I just got my 2.8L LT that was not working. I had just replaced the fuel pump and siphoned the old gas(it was not working). The fuel pump now works but the car will still not start. I checked for spark and noticed it was sparking erratically (multiple times per revolution).

I tried pulling DTCs (jumpping pins 5 and 6 OR 6 and 12) and I noticed that the service engine light makes one quick flash and thats it. No code 12 or anything. I am starting to think my PCM is dead? Anyone expierence these symptoms.

Please help me get my car running!!!!