GM Service Manual Online
For 1990-2009 cars only
Battery Voltage Signal: The scan tool displays 0.0-16.0 volts. The battery voltage input represents the system voltage measured at the module ignition feed input.

Windshield Wiper Switch: The scan tool displays the set position of the Windshield Wiper Switch.

Wiper Park Switch: The scan tool displays if wipers are in the park position or not. If the scan tool displays Off the wipers are in the parked position.

Windshield Washer Switch: The scan tool displays the position of the wash switch.

Wiper Motor Delay Time: The scan tool displays the Intermittent delay time in seconds. Time periods are between 0-25 seconds.

Wiper Motor Relay Command: The scan tool displays if the BCM is commanding the wiper 1 relay On or Off.

Wiper Motor Relay Status: The scan tool displays the status of the wiper 1 relay.