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30-Minute Learn Procedure

WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition on, with engine off.
  2. Attempt to start engine, then release key to ON. The vehicle will not start.
  3. Observe the SECURITY telltale, after about 10 minutes the telltale will turn OFF.
  4. Turn OFF ignition and wait 5 seconds.
  5. Repeat step  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.
    6. 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 ignition OFF before attempting to start vehicle.
  6. Start 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.
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