Q: electrical problems on 2008 Cadillac Escalade

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The audio system quit until i turned off the igition for 30 minutes. The rear window goes down by itself. The electic running boards quit misteriously but start up after I turn off the igition. The doors will not open with the remote or door lock buttons. They start up again after a while. The dealer told me to bring my vehicle in when these problems happen. They do not seem to be inclined to check my electrical system.
(1) Answer
I would find another Dealer because this is clearly an electrical problem or find a good Diagnostic shop. Most if not all of these functions are controlled by the Body Control Module which is the Computer that manages the Body Systems.

here is list of shops in your area