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Body Control Module (BCM) Replacement

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Isuzu Ascender, 2005 GMC Envoy XUV, 2005 GMC Envoy XL, 2005 GMC Envoy, and 2005 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

If the body control module (BCM) is replaced, the following procedures must be performed in the following order:

  1. BCM Reprogramming - Refer to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems.
    2. IMPORTANT: This procedure has to be performed only for vehicles equipped with Passlock™ System.
  2. Theft Learn - Refer to Programming Theft Deterrent System Components in Theft Deterrent. A new BCM will learn the Passlock™ information automatically but the powertrain control module (PCM) must still learn the theft information from the BCM.
  3. Relearn Restraints ID - Refer to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems.
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