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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1582 (Theft Deterrent System) >> Description and Operation >> Vehicle Theft Deterrent (VTD) Description and Operation >> Changing the Passlock™ Components

Changing the Passlock™ Components

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The following components contain codes or passwords, or must learn codes or passwords for the Passlock™ system to allow the vehicle to start:

If any of these parts are replaced, a learn procedure must be performed. Refer to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS   .  If parts are replaced and a learn procedure is not performed, the engine will crank and will not run or will start and stall immediately.

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