System Components

Driver's Door Switch (switchblock)

The signals from the switch block pass through the driver's door via the P-Bus and on to the GM III and passengers door module.

Each window switch has four positions.

Two for the standard mode of operation:

• Push to first detent and hold to raise/lower the window (1).

Two for the one-touch mode:

• Push to second detent and quickly release (quick strike) to automatically raise/lower the window (2).

All window operations signals are digital inputs to the door module and GM III.

• Comfort closing/opening of the windows from the driver's lock cylinder. The remote key provides opening only.
• When the ignition key is in accessory or "on" position press the switch to open or close the windows. Window operation is possible with the ignition switched off until a front door is opened or 16 minutes (maximum) has elapsed.
• Window load switching is through relays. The front window control relays are located in the door modules, the rear window relays are in the GM III. The GM III monitors the current draw for end limit position. The maximum run time for the window motors is limited to 6 seconds in the one-touch mode. This allows the motors to be switched off if the end limit load sensing fails.