Re: Please Help Electric problems ... multi function switch???
Not sure about the wiprs, but the radio has an input into the BCM. When strange things happen, look to the BCM (Body Control Module). Although you might hate going to the dealer, they can plug right into the BCM and find out if that's what's going on. My BCM would lower the rear window and raise it on my SUT as if by magic and the passenger seat heater wouldn't work - I ckecked fuses, but the dealer found it was the mysterious and often overlooked BCM. Replaced my BCM under warranty and no more mysterious goings on.
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Hummer, like nothing else
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