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

Vehicle Theft Deterrent (VTD) System


Object Number: 1364710  Size: FS
Master Electrical Component List
Vehicle Theft Deterrent (VTD) Description and Operation
Content Theft Deterrent (CTD) System
IGN SW and PRK/REV Fuses
IGN SW and PRK/REV Fuses
ABS, PCM BATT, and COOLFAN 1 Fuses - 3.8L
ABS, PCM BATT, and COOLFAN 1 Fuses - 3.8L
Ignition Switch Positions
Serial Data Class 2
Ignition Switch Positions
G201 - 2 of 2
G201 - 2 of 2
Figure 2:

Content Theft Deterrent (CTD) System


Object Number: 765679  Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
VTD and CTD Indicators
Vehicle Theft Deterrent (VTD) System
Serial Data Class 2
Horn Schematic
Park LP Relay and License Lamps
Figure 3:

Indicators - VTD and CTD


Object Number: 1364711  Size: FS
Master Electrical Component List
Theft Systems Description and Operation
Content Theft Deterrent (CTD) System
Serial Data Class 2