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 MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 20 (THEFT DETERRENT SYSTEM)
2004 Oldsmobile Bravada RWD
Section 20 (Theft Deterrent System)
2004 Oldsmobile Bravada RWDSECTION Section 20 (Theft Deterrent System)
WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Component Locations
- Programming Theft Deterrent System Components
- Trouble Shooting
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- DTC B0688: Security Indicator Circuit Fault
- DTC B1007: Checksum Value Error
- DTC B2947: PASSLOCK(tm) SENSOR POWER CIRCUIT LOW
- DTC B2948: PASSLOCK(tm) SENSOR POWER CIRCUIT HIGH
- DTC B2957: PASSLOCK(tm) SENSOR DATA CIRCUIT LOW
- DTC B2958: PASSLOCK(tm) SENSOR DATA CIRCUIT HIGH
- DTC B2960: PASSLOCK(tm) SENSOR DATA INCORRECT BUT VALID
- DTC B3031: Controller In Learn Mode
- DTC B3033: System Indicates Tamper
- DTC C0559: EEPROM Checksum Error
- DTC P1626: Invalid Fuel Enable Password
- DTC P1630: POWERTRAIN CONTROL MODULE UNABLE TO LEARN PASSLOCK(tm) MODULE PASSWORD
- DTC P1631: Invalid Password Received
- System Tests
- Removal & Installation
- Wiring Diagrams
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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.