Passlock(TM) Anti-Theft Seed And Key Method

2000 Cadillac DeVille DHSSECTION Passlock(TM) Anti-Theft Seed And 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.
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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.