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

VTD System


Object Number: 464360  Size: FS
HDHIBML, HDHIBMR, ALDL, PCM BATT, IP Fuses
G201 - Steering Column
G201 - Steering Column
Serial Data Class 2 (3 of 3)
Ignition Switch
RR BLO, RRDR MDL, HVAC BLO, STOP LP, IGN SW, and TSIG/HAZ Fuses
Handling ESD Sensitive Parts Notice
CTD Inputs and Outputs
Vehicle Theft Deterrent (VTD) Description
Theft Deterrent System Components
Figure 2:

CTD Inputs and Outputs


Object Number: 464370  Size: FS
Serial Data Class 2 (2 of 3)
Door Open Inputs w/B9Q
Rear Compartment Lid Ajar Signal
G402 - Backup Lamps
Serial Data Class 2 (3 of 3)
Serial Data Class 2 (1 of 3)
G104 - Lamps and Other Items
G104 - Lamps and Other Items
Horns Schematic
Turn/Hazard Flasher Module, Hazard Switch
Handling ESD Sensitive Parts Notice
VTD System
CTD Door Inputs
Vehicle Theft Deterrent (VTD) Description
Theft Deterrent System Components
G402 - Backup Lamps
Figure 3:

CTD Door Inputs


Object Number: 602556  Size: FS
Door Open Inputs w/V4U
Driver Door Module (DDM) Power, Gd., Inputs and Outputs
Door Open Inputs w/V4U
Door Open Inputs w/V4U
Door Open Inputs w/V4U
Door Open Inputs w/V4U
Serial Data Class 2 (2 of 3)
Serial Data Class 2 (3 of 3)
Door Open Inputs w/V4U
Handling ESD Sensitive Parts Notice
CTD Inputs and Outputs
Vehicle Theft Deterrent (VTD) Description
Theft Deterrent System Components