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

Vehicle Theft Deterrent (VTD) System


Object Number: 1638492  Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
Control Module References
Content Theft Deterrent (CTD) System
Underhood Fuse Block - IBCM 1, Body Control Module (BCM), AIR BAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR, and RADIO Fuses
Underhood Fuse Block - IBCM 1, Body Control Module (BCM), AIR BAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR, and RADIO Fuses
Underhood Fuse Block - IBCM 1, Body Control Module (BCM), AIR BAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR, and RADIO Fuses
Underhood Fuse Block - IBCM 1, Body Control Module (BCM), AIR BAG (BATT), CLUSTER/THEFT, HVAC CTRL (BATT), IGN SENSOR, and RADIO Fuses
Low Speed Serial Data
Power, Ground, Class 2 and High Speed Serial Data
G201
Figure 2:

Content Theft Deterrent (CTD) System


Object Number: 1638493  Size: FS
Master Electrical Component List
Vehicle Theft Deterrent (VTD) Description and Operation
Control Module References
Vehicle Theft Deterrent (VTD) System
Door Ajar Indicators
Extended Sedan
Sedan
Horns Schematics
Headlights/Daytime Running Lights (DRL) Schematics
Park Lamps
Door Lock Switches