Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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The symptoms you are indicating is a ground problem. Do you have a trailer hitch and wiring installed?
That could also be suspect. I would see if you can locate the module and unplug it and see if your problem goes away
I would start with checking ground wires. I suspect you have a bad ground.
Which engine do you have?
can you check the VIN and tell me the 8th digit?
On the right front of the engine is a ground cable that controls the lights and the PCM a very likely suspect.
There is also a ground on both sides of the back of the engine.
The codes you have are for the oxygen sensor bank 2 sensor 2. This is the oxygen sensor behind the rear convertor. The furthest back. Try unplugging that and see if the lights change how they work. It is possible that the oxygen sensor is shorted
Yes later is fine. The convertor is in the exhaust system. Looks like small muffler. closer to engine
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