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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> General Information >> Computer Relearn Procedures >> General Motors (Cars) >> Theft Deterrent System Components >> Passlock™ Anti-Theft Seed & Key Method (Saturn - 1.9L)

Passlock™ Anti-Theft Seed & Key Method (Saturn - 1.9L)

Passlock™ learn procedure must be performed when Passlock™ sensor, BCM or PCM are replaced. If only Passlock™ sensor was replaced, Auto Learn method my be used. See PASSLOCK™ ANTI-THEFT AUTO LEARN METHOD. BCM or PCM replacement requires seed and key method. Seed and key method requires use of Tech 2 scan tool. See PASSLOCK™ ANTI-THEFT SEED & KEY METHOD.

  1. Check BCM and PCM for existing codes. If codes exist, repair and proceed to next step. If no codes exist, go to next step.
  2. Install scan tool. Turn ignition switch to RUN position. Using Programming System, select Passlock™ relearn procedure. Wait for 10 minutes. When security light changes from flashing or on to off, turn ignition switch to OFF position. Vehicle should start on next ignition cycle.
    NOTE: If ignition is turned off before security light changes state, relearn procedure must be restarted.