GM Service Manual Online
For 1990-2009 cars only
Door Jamb Switch: The scan tool displays On/Off. The input of the passenger door open switch, where a closed switch (passenger door open) is displayed as On.

Door Key Cyl. Unlock Sw: The scan tool displays On/Off. Display indicates the state of the door lock cylinder switch.

Driver Door Jamb Sw: The scan tool displays On/Off. Display indicates the state of driver door jamb switch, where a closed switch (driver door open) is displayed as On.

Horn Output: The scan tool displays On/Off. Display indicates the commanded state of the BCM horn output.

Ignition Switch: The scan tool displays Accessory, Off/Lock, Off/Unlock., Run, Crank. Display indicates the state of the igniton switch.

Low Beam Output: The scan tool displays On/Off. The commanded state of the low beams control.

Park Lamp Relay Output: The scan tool displays On/Off. Display indicates the commanded state of the BCM park lamp relay output.

Theft Deterrent: The scan tool displays Armed, Arm Delay, Armed Initiate, Off, Ready. Display indicates the state of the theft deterrent system.

Trunk Tamper Switch: The scan tool displays On/Off. Display indicates the state of the trunk tamper switch.

PCM/VCM in VTD Fail Enable: The scan tool displays which state the Powertrain Control Module (PCM) is currently in for the Vehicle Theft Deterrent (VTD).

VTD Fuel Disable: The scan tool displays the state of which the fuel delivery system is in.

VTD Password: The scan tool displays if the fuel enable password sent to the Powertrain Control Module (PCM) upon cranking is OK or Incorrect.

VTD Auto Learn Timer: The scan tool displays which state the learn timer for the VTD is currently in.