Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 445 (THEFT DETERRENT SYSTEM)
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Section 445 (Theft Deterrent System)
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Section 445 (Theft Deterrent System)
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Theft Deterrent
- Diagnostic System Check - Theft Deterrent
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC)
- DTC B2734: Cannot Write To Non Volatile Memory
- DTC B2960: Transponder Value Mismatch
- DTC B3031: Learn Coded Key Setting Active
- DTC B3055: Unable To Measure The Ignition Key Transponder Value
- DTC P1626: PCM Lost Or Has Not Received Password
- DTC P1630: PCM Remains In Theft Deterrent Password Learn Mode Too Long
- DTC P1631: PCM Detects An Incorrect Password
- Symptoms - Theft Deterrent
- Symptom List
- Repair Instructions
- Description and Operation
- Theft Systems Description and Operation
- Content Theft Deterrent (CTD) Description and Operation
- Notes
- Arming the CTD System
- Locking The Vehicle Without Arming The CTD System
- Disarming An Armed System/Silencing An Alarm
- CTD Circuit Description
- Door Jamb Switches
- Body Control Module (BCM)
- Front Door Lock Cylinder Switches
- Liftgate Key Cylinder Unlock Switch
- Lift Glass Ajar Switches
- Power Door Lock Switches
- Important
- Inputs
- Outputs
- Vehicle Theft Deterrent (VTD) Description and Operation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.