Section 340 (Theft Deterrent System)
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Wiring Schematic and Wiring Routing Diagrams
- Diagnostic Information and Procedures
- DTC B291B
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit / System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit / System Verification
- Circuit / System Testing
- Repair Instructions
- Symptoms - Theft Deterrent
- Content Theft Deterrent Malfunction
- Security Indicator Malfunction (with CJ2)
- Security Indicator Malfunction (with C67)
- DTC B291B
- Description and Operation