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

Vehicle Theft Deterrent (VTD) System (LH Drive)


Object Number: 1220808  Size: FS
Master Electrical Component List
Vehicle Theft Deterrent (VTD) Description and Operation
Theft Deterrent System Schematics-Vehicle Theft Deterrent (RH Drive)
Power Distribution Schematics-Ignition Switch and Heated Seat Fuses
Power Distribution Schematics-Ignition Switch Supply
Power Distribution Schematics-Ignition Switch Supply
Power Distribution Schematics-ALDL, PCM Battery, I/P, ABS Fuses
Power Distribution Schematics-Battery Feed to Fuseblock Underhood
Power Distribution Schematics-Battery Feed to Fuseblock Underhood
Starting and Charging Schematics-Starting Controls
Data Link Connector (DLC) Schematics-Serial Data Line (LH Drive) (1 of 2)
Ground Distribution Schematics-G201 (1 of 5)
Ground Distribution Schematics-G201 (1 of 5)
Figure 2:

Vehicle Theft Deterrent (VTD) System (RH Drive)


Object Number: 1220828  Size: FS
Master Electrical Component List
Vehicle Theft Deterrent (VTD) Description and Operation
Theft Deterrent System Schematics-Content Theft Deterrent (CTD)
Theft Deterrent System Schematics-Vehicle Theft Deterrent (LH Drive)
Power Distribution Schematics-Ignition Switch and Heated Seat Fuses
Power Distribution Schematics-Ignition Switch Supply
Power Distribution Schematics-Ignition Switch Supply
Power Distribution Schematics-ALDL, PCM Battery, I/P, ABS Fuses
Power Distribution Schematics-Battery Feed to Fuseblock Underhood
Power Distribution Schematics-Battery Feed to Fuseblock Underhood
Starting and Charging Schematics-Starting Controls
Data Link Connector (DLC) Schematics-Serial Data Line (LH Drive) (1 of 2)
Power Distribution Schematics-Ignition Switch Supply
Ground Distribution Schematics-G201 (1 of 5)
Ground Distribution Schematics-G201 (1 of 5)
Figure 3:

Content Theft Deterrent (CTD) System


Object Number: 794909  Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
Theft Deterrent System Schematics-Class 2 and Tamper Switches
Theft Deterrent System Schematics-Vehicle Theft Deterrent (RH Drive)
Figure 4:

Class 2 and Tamper Switches


Object Number: 792096  Size: FS
Master Electrical Component List
Theft Systems Description and Operation
Theft Deterrent System Schematics-Content Theft Deterrent (CTD)
Exterior Lights Schematics-Hazard Switch
Horns Schematics
Data Link Connector (DLC) Schematics-Serial Data Line (LH Drive) (2 of 2)
Ground Distribution Schematics-G104
Ground Distribution Schematics-G402 (1 of 2)