...changing knock senser and harness? I have changes both knock sensers and harness and it keeps kicking my check engine light on. I took it to gm dealer and they checked it out and they say it may be the pcm. It is 550 dollers and I hate to spend that kinda money and it not be it. Has anyone had this problem that keeps comming back? I did not pinch the wires and they tested the senscers and they say they are working.
