NOW WHAT?!?! That's the front knock sensor on my 03 envoy xl. The obd code said knock sensor circuit low, and I found one of the wires was broke. So I'm not sure how I'm going to fix the broken wire, aint enough wire showing to splice it..... might have to let the pros handle this one, mainly cause I'd be doing it off my garage floor on my back, rather than standing under a lift!!
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