GM Service Manual Online
For 1990-2009 cars only
Accessory Relay Command: The scan tool displays On/Off. The state of the accessory relay within the BCM.

Auto Door Locks Mode: The scan tool displays Enabled/Disabled. The state of the auto door locks Personalization function.

Auto Door Unlock Method: The scan tool displays Key/Park. The method in which the auto door unlock function is activated.

Auto Door Unlock Mode: The scan tool displays None/Driver/All/Invalid. The state of the auto door unlock Personalization function.

Battery Voltage: The scan tool displays 9.0-15.5 volts. The state of the battery voltage supplied to the BCM.

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 Idle/Lock/Unlock. The door cylinder switch input to the BCM, where a cylinder activation is displayed as either Lock or Unlock.

Door Cylinder Switch: The scan tool displays 9.0-15.5 volts. The state of the battery voltage at the door cylinder switch.

Door Lock Switch: The scan tool displays Idle/Lock/Unlock. The door lock switch input to the BCM, where a lock switch activation is displayed as either Lock or Unlock.

Door Lock Switch: The scan tool displays 9.0-15.5 volts. The state of the battery voltage at the door lock switch.

Driver Door Ajar Switch: 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.

Key Lock/Unlock Enable: The scan tool displays Enabled/Disabled. The state of the door cylinder lock Personalization function.

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

Rear Defog Relay Command: The scan tool displays ON/OFF. The state of the rear defog relay within the BCM.

Rear Defog Switch: The scan tool displays ON/OFF. The rear defogger switch input to the BCM, where a switch activation is displayed as ON.