Power Window System Operation

WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

The driver master control contains 4 power window switches which are integral components to the Driver Door Module (DDM). Closing any of the normally open switches provides the DDM with a request for power window operation. The switches for the 2 front windows have 3 positions up, down, and express down, while the switches for the rear windows have only 2 positions, up and down. Each of these switches and their positions is a direct input into the DDM. Upon receiving a request for power window operation, the DDM, transmits a GMLAN message indicating the switch and it's changed position.

The passenger door module (PDM) contains a single power window switch that is an integral component. Closing of this normally open, rocker switch provides the PDM with a request for the front passenger power window operation. The switch for the front passenger window has 2 positions up and down. Each of these switch positions is a direct input to the PDM.

The 2 rear passenger doors have their own switches. A switch activation alone can control the up and down functions of the rear windows. However the BCM, upon receiving a GMLAN message from the DDM, can send a signal to the appropriate rear window switch which will activate their respective rear window motors.