Driver Window Operation
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 driver window switch is supplied battery voltage through 30A fuse in the underhood fuse block. The driver window switch UP and DOWN relays controls power and ground to the window motor through the motor control circuits. The driver window switch relays can be energized by the integrated rocker switch. While the driver window switch is in an inactive state, both of the window motor control circuits are grounded through the UP and DOWN relays. When an UP or DOWN relay is energized, the battery supply circuit is closed to the corresponding motor control circuit while the other control circuit remains grounded through the de-energized relay. The supply side of the UP and DOWN relays receives voltage through the PWR/WINDOW fuse.