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2006 gmc envoy_denali_xl
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Discussion Starter #1
Hi all,

Been having a long saga with my Envoy. After replacing the lifters on the passenger side of the engine, I have codes indicating I had a bad O2 sensor bank 2 sensor 1. I couldn't reach the connector so I cut the wires and wired it to the new sensor. I got codes saying the heating element on the O2 was not working. Fuses are fine. I tested the 2 black wires and only 1 has 12v. I'm wondering if I damaged a wire doing the lifters. I would like to just run a new wire from the O2 sensor to wherever it goes, but I don't know where that is. Anyone have a wiring diagram or experience that can tell me where the wire terminates? Does it go directly to the fuse box or somewhere else?
 
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