GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Vehicle Theft Deterrent Module (VTD)


Object Number: 696609  Size: FS
Master Electrical Component List
Theft Systems Description and Operation
Door Lock Actuators and Simple Bus Interface
Park Lamp Relay
Horns
Serial Data Class 2
G200 (1 of 2)
G200 (1 of 2)
Ignition Switch (2 of 2)
IGN SW and NSBU Fuses (Rear Fuse Block)
IGN Switch, PCM Feeds
High Beam and Low Beam Relays, ABS, PCM Batt, High Beam and Low Beam Fuses (Underhood Fuse Block)
Figure 2:

Door Lock Actuators and Simple Bus Interface


Object Number: 696615  Size: FS
Master Electrical Component List
Theft Systems Description and Operation
Vehicle Theft Deterrent Module (VTD)