Crew Cab
WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
The rear passenger power windows can also be operated from the driver window switch master control which provides a low reference for the UP and DOWN relays. The rear passenger window switches on the driver master control have 2 positions; UP and DOWN, their position is a direct input into the driver window switch.