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Super Mechanic
Super Mechanic, Master technician
Category: Chevy
Satisfied Customers: 16997
Experience:  29 yrs. exp., ASE master, cert. in G.M. electrical, a/c, susspension, brakes, electronic steering
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have a 2001 cavalier anti-theft light came on now car will

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have a 2001 cavalier anti-theft light came on now car will turn over but not start. Did not think my key had a chip in it. Is there a 'quick' way to disable the anti-theft feature
Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.

in order to do the 10 minute relearn procedure you will need to have a scan tool, (tech2) but you can do the 30 minute relearn. There is no way to "bypass" the system or disable it.



10 Minute Learn Procedure

Tools Required

  • Tech 2
  • Techline terminal with current SPS (Service Programming System) software
  1. Connect the Tech 2 to the vehicle.
  2. Select "Request Information" under "Service Programming".
  3. Disconnect the Tech 2 from the vehicle and connect it to a Techline terminal.
  4. On the Techline terminal, select "Theft Module Re-Learn" under "Service Programming".
  5. Disconnect the Tech 2 from the Techline terminal and connect it to the vehicle.
  6. Turn ON the ignition, with the engine OFF.
  7. Select "VTD Re-Learn" under "Service Programming".
  8. Attempt to start the engine, then release the key to ON (vehicle will not start).
  9. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF (the vehicle is now ready to relearn the Passlock(TM) Sensor Data Code and/or password XXXXX the next ignition switch transition from OFF to CRANK).
  10. Turn OFF the ignition, and wait 5 seconds .
  11. Start the engine (the vehicle has now learned the password).
  12. With the Tech 2 (scan tool), clear any DTCs.



  13. 30 Minute Learn Procedure Tools Required None


  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON (vehicle will not start).
  3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
  4. Turn OFF the ignition, and wait 5 seconds .
  5. Repeat steps 1 through 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). IMPORTANT: The vehicle learns the Passlock(TM) Sensor Data Code and/or password XXXXX the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
  6. Start the engine (the vehicle has now learned the Passlock(TM) Sensor Data Code and/or password).
  7. With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).
Customer: replied 6 years ago.
sorry O thought I indicaed we tried that solution but it did not work. Can it be tried with multiple 30 min learns
Sometimes it takes two 30 minute relearns, but if not, then there would be a problem with the security system that would need further diagnosing with the scanner.
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