For 1990-2009 cars

# Body and Accessories

## All Component Locator

- Theft Deterrent System Component Views
- Theft Deterrent System Components

## All Description and Operation

- Content Theft Deterrent (CTD) Circuit Description
- Content Theft Deterrent (CTD) Description
- Content Theft Deterrent (CTD) Operation
- Vehicle Theft Deterrent (VTD) Description
- Vehicle Theft Deterrent (VTD) Operation

## All Special Tools and Equipment

- Special Tools

## All Visual Identification

- Theft Deterrent System Connector End Views

## Cleaning, Inspection, and Adjustment

- Programming Additional Keys
- Programming Replacement Keys, Ignition Cylinder, or Powertrain Control Module

## Diagnostic Procedures

- Content Theft Deterrent (CTD) Alarm Mode Always On
- Content Theft Deterrent (CTD) Alarm Mode Inoperative
- Content Theft Deterrent (CTD) System Check
- Horn Inoperative in Content Theft Deterrent (CTD) Alarm Mode
- Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode
- SECURITY Indicator Always On or Flashing
- SECURITY Indicator On, Engine Does Not Crank
- Vehicle Theft Deterrent (VTD) System Check

## Electrical/Electronic Schematic Diagrams

- Theft Deterrent System Schematic Icons
- Theft Deterrent System Schematic References
- Theft Deterrent System Schematics

## Other Specifications

- GM SPO Group Numbers

## Removal, Installation, and Replacement

- Ignition Lock Cylinder Replacement - On Vehicle
- Theft Deterrent Module Replacement
- Theft Deterrent Relay Replacement