Windows and Glass: Description and Operation

Glass, Frames and Mechanisms

The glass, frames and mechanisms consist of the following:

- Body Control Module (BCM)

- Door glass top run

- Door window glass

- Door window regulator

- Door window regulator motor

- Rear quarter glass

- Rear window defrost switch (integral to the HVAC module)

- Rear window glass

- Window control switches

- Windshield glass

The power window system only operates if the ignition is in the RUN position.

The master window control switch:

- disables operation of the rear passenger windows when the lock-out switch is in the UNLOCK position.

- automatically raises/lowers the driver window when activated momentarily to the second detent position.

The power window system can be operated from either the master window control switch or from the window control switches located on each door panel.

Rear Window Defrost

The engine must be running for the rear window defrost system to operate. The rear window defrost system is controlled by the BCM (Body Control Module). When the rear window defrost switch (integral to the HVAC module) is pressed, the BCM (Body Control Module) supplies voltage to the rear window defrost grid. An LED indicator illuminates when the rear window defrost is activated. The rear defrost self actuates when the ambient air temperature is less than 5° C (41° F) and engine coolant temperature is less than 60° C (140° F). The rear window defroster LED indicator does not illuminate when the rear defroster self actuates.