GM Service Manual Online
For 1990-2009 cars

Data

Battery Voltage: The scan tool displays the battery voltage of the vehicle.

Ignition

Ignition Accessory: The scan tool displays the state of the Accessory relay. The scan tool displays Active when the body control module (BCM) activates the Accessory relay.

Power Mode: The scan tool displays the current power mode that the vehicle is in.

Input

Driver Door Switch: The scan tool displays the state of the driver door.

Pass Door Switches: The scan tool displays the state of any of the passengers doors.