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 G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 819 (THEFT DETERRENT SYSTEM)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M
Section 819 (Theft Deterrent System)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Section 819 (Theft Deterrent System)
WARNING: This page is about a different car, the 2003 Saturn Vue. 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) List
- DTC B0688: Short To Battery In The Security Indicator Control Circuit
- DTC B0689: Open In The Security Indicator Control Circuit
- DTC B2947: Security System Sensor Power Circuit Low
- DTC B2948: Security System Sensor Power Circuit High
- DTC B2957: Security System Sensor Data Circuit Low
- DTC B2958: Security System Sensor Data Circuit High
- DTC B2960: Security System Sensor Data Incorrect but Valid
- DTC B3031: Security System Controller in Learn Mode
- DTC B3033: Security System Indicates Tamper
- DTC P1629: Fuel Enable Password
- DTC P1630: Theft Deterrent Learn Mode Active
- DTC P1631: Theft Deterrent Fuel Enable Signal Not Correct
- Symptoms - Theft Deterrent
- Content Theft Deterrent (CTD) Alarm Mode Inoperative
- 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 Inoperative
- Repair Instructions
- 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.