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.
Tools Required
2004 Oldsmobile Bravada AWDSECTION Tools Required
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Tech 2
- Techline terminal with current Service Programming System (SPS) software
- Connect the Tech 2 to the vehicle.
- Select "Request Information" under "Service Programming".
- Disconnect the Tech 2 from the vehicle and connect it to a techline terminal.
- On the techline terminal, select "Theft Module Re-Learn" under "Service Programming".
- Disconnect the Tech 2 from the techline terminal and connect it to the vehicle.
- Turn ON the ignition, with the engine OFF.
- Select "Program ECU" under "Service Programming".
- 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, the vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK.
- Turn OFF the ignition, and wait 5 seconds.
- Start the engine, the vehicle has now learned the password.
- With the Tech 2 scan tool, clear any DTCs.
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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.