1996 impala lm7 5.3
Discussion Starter · #1 ·
Hello everyone. I replaced my coil harness with (ac delco) 12579355. I have the d510c coils. After installing I tried to start and it popped from exhaust twice. So I checked everything and find out the wiring was backward on harness connector going to coils. I switched the wires back the way it was suppose to be and now no start. I checked all fuses and relays. Seem like I’m not getting power to coils. I have a 96 impala with a Ls 5.3 (2000) with psi harness and computer. Did I fry my pcm or is there something im not checking?