Piece of cake - Pop the switch assembly out using a mini pry bar from the bottom end of the switch assembly. Unplug connector which has a tab that needs to be squeezed in.
You can't as the speed is computer controlled.with a chip or if you or some one you know works at a gm dealer they can do bu they wont for random people
Open the glovebox to remove the two screws securing the dash trim, then gently pry the trim to unclip it. Once removed, you'll need to unscrew the switches on either side of the radio. Behind the...