My Tahoe 5.3L had code p0332 and p0327 both KS. I replaced and replaced the harness. Cleared codes light came back on same codes. Replaced with reprogrammed pcm again light comes back same code. Checked resistance is good through wire all the way back to pcm went ahead and spliced in new wires from pcm to ks harness plug. Again still have ks codes. Pulled intake took out knock sensors retorqued and still have codes for both ks. I am at a loss here what to do the pins for the pcm are good both male and female and doublt I have 2 faulty pcms and 2 faulty Knock sensors that were new? The only thing I have not tried is to go with delco KS instead of aftermarket but why change if I get good resistance? I am not sure how to check voltage for these since its a 1 wire setup for each ks I assume the pcm sends a signal and grounds as well? Anyway any advice you have I would appreciate it greatly. I have no other codes occasionally I will get a evap malfunction code but do not think these are related. There is no engine ping or knock either runs fine.
Thursday, October 25th, 2012 AT 3:43 PM