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.
30-Minute Learn Procedure
2004 Oldsmobile Bravada RWDSECTION 30-Minute Learn Procedure
WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ON the ignition, with the engine OFF.
- Attempt to start the engine, then release the key to ON (vehicle will not start).
- Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
- Turn OFF the ignition, and wait 5 seconds.
- Repeat steps 1- 4 2 more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock® Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).
- Start the engine (the vehicle has now learned the Passlock® Sensor Data Code and/or password).
- With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).
NOTE:
The vehicle learns the Passlock® Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
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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.