Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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I would say you definitely have a ground problem.
I would start here:
There is a Splice pack (picture attached) near the ash tray that controls a lot of your interior functions. I would check the splice pack for corrosion and on the right side of the dash there are 2 ground wires. make sure they are tight and clean.
disregard splice pack picture. I attached wrong picture
Here is better picture. It is probably taped to a harness.