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 949 (THEFT DETERRENT SYSTEM)
2004 Oldsmobile Bravada RWD
Section 949 (Theft Deterrent System)
2004 Oldsmobile Bravada RWDSECTION Section 949 (Theft Deterrent System)
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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 Data Definitions
- DTC B2947: Short To Ground On The Passlock™ Sensor Power Circuit
- DTC B2948: Security Sensor Signal Circuit Voltage
- DTC B2957: BCM Signal Input Voltage Low
- DTC B2958: BCM Signal Input Voltage High
- DTC B2960: Valid But Different Code Value Than Previously Learned Form Passlock™ Sensor
- DTC B3031: BCM Does Not See A Valid Passlock™ Sensor Code
- DTC B3033: BCM Is Reading A Tamper Code From The Passlock™ Sensor
- DTC P1626: PCM To BCM Communication
- DTC P1631: PCM Did Not Receive A Valid Password
- DTC P1632: Undecided Password Was Sent From BCM
- Symptoms - Theft Deterrent
- Repair Instructions
- Description and Operation
- Theft Systems Description and Operation
- Content Theft Deterrent (CTD) Description and Operation
- Content Theft Deterrent (CTD) System
- SECURITY Telltale
- Body Control Module (BCM)
- Door Latch, Door Jamb Switches
- Door Key Switch
- Remote Control Door Lock Receiver Module System
- Off State
- Idle State
- Disarmed State
- Ready-To-Arm State
- Arm Initiated State
- Arm Delay State
- Armed State
- Alarmed State
- Remote Panic Alarm/Vehicle Locator State
- Locking the Vehicle Without Arming the System
- Disarming the System
- Deactivating the Alarm
- Alarm State Activation
- Return System to Arm Initiated State
- Ignition Switch Disarm Function
- Vehicle Theft Deterrent (VTD) Description and Operation
- Special Tools and Equipment
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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.