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 MANUALSCHEVROLET2002CAVALIER BASE, 4D SEDAN, 2.4 TREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS SELF-DIAGNOSTICS - 2.4LPROGRAMMINGPROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS30-MINUTE LEARN PROCEDURE
2002 Chevrolet Cavalier Base, 4D Sedan, 2.4 T
30-Minute Learn Procedure
2002 Chevrolet Cavalier Base, 4D Sedan, 2.4 TSECTION 30-Minute Learn Procedure
- Turn ignition on, with engine off.
- Attempt to start engine, then release key to ON (vehicle will not start).
- Observe the SECURITY telltale, after about 10 minutes, the telltale will turn OFF.
- Turn ignition off, and wait 5 seconds.
- Repeat steps 1 - 4 two more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock(tm) 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(tm) 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(tm) 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 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.