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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1601 (BODY CONTROL SYSTEM)REPAIR INSTRUCTIONSBODY CONTROL MODULE (BCM) PROGRAMMING/RPO CONFIGURATIONPROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Programming Theft Deterrent System Components

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Programming Theft Deterrent System Components
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: This procedure has to be performed only for vehicles equipped with Passlock System.

Perform the PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS in Theft Deterrent after successfully finishing the Setup New BCM procedure. If the PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS in the Theft Deterrent procedure is not performed after a BCM replacement, one of the following conditions will occur:

  • The vehicle will not be protected against theft by the PASSLOCK system.
  • The engine will not crank nor start.
RENDER: 1.0x

NO RELATED

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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.