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)SYSTEM TESTSTEST A: SECURITY INDICATOR LIGHT ALWAYS ON OR FLASHING
2004 Oldsmobile Bravada RWD
Test A: Security Indicator Light Always On Or Flashing
2004 Oldsmobile Bravada RWDSECTION Test A: Security Indicator Light Always On Or Flashing
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.
- If theft deterrent diagnostic system check has been performed, go to next step. If theft deterrent diagnostic system check has not been performed, go to THEFT DETERRENT DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM.
- Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC), located below steering column. See Figure . Momentarily turn ignition switch to RUN position. Using scan tool, command instrument panel lights OFF. If SECURITY indicator does not turn off, go to next step. If SECURITY indicator turns off, check for intermittent or poor connections.
- Disconnect Passlock(tm) module Green 16-pin harness connector. If SECURITY indicator turns off, go to next step. If SECURITY indicator does not turn off, go to step 6 .
- Check for short to ground in Yellow wire (SECURITY indicator control circuit) between Passlock(tm) module harness connector terminal B2 and Instrument Panel Cluster (IPC) harness connector terminal A4. See Figure and Figure . If Yellow wire is okay, go to next step. If Yellow wire is not okay, repair as necessary. After repair, go to step 9 .
- Check IPC connector for intermittent or poor terminal contact. If terminal contact is okay, go to step 7 . If terminal contact is not okay, repair as necessary. After repair, go to step 9 .
- Check Passlock(tm) module connector for intermittent or poor terminal contact. If terminal contact is okay, go to step 8 . If terminal contact is not okay, repair as necessary. After repair, go to step 9 .
- Replace IPC. After repair, go to step 9 .
- Replace Passlock(tm) module. See PASSLOCK(tm) MODULE under REMOVAL & INSTALLATION. After repair, go to next step.
- Operate system to verify fault no longer exists. If fault still exists, go to step 2 .
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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.