GM Service Manual Online
For 1990-2009 cars only
Battery Voltage: The scan tool displays Normal/Out of Range. This is the current battery voltage available at the body control module (BCM) with normal being between 9 and 16 volts.

Door Ajar Switch: The scan tool displays Door Closed/Door Ajar. The passenger door ajar switch input to the BCM, where an open door is displayed as Door Ajar.

Door Cylinder Switch: The scan tool displays Voltage.

Door Cylinder Switch: The scan tool displays Idle/Lock/Unlock/Invalid. The driver door key cylinder switch state.

Driver Door Ajar Sw.: The scan tool displays Door Closed/Door Ajar. The driver door ajar switch input to the BCM, where an open door is displayed as Door Ajar.

Driver Door Lock Actuator Command: The scan tool displays Idle/Lock/Unlock/Invalid. The state of the driver door lock actuator output.

Passenger Doors Lock Actuator Command: The scan tool displays Idle/Lock/Unlock/Invalid. The state of the passenger door lock actuators outputs.