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DTC B1000: Body Control Module Internal Malfunction: Testing

WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform diagnostic system check for system exhibiting symptoms. See DIAGNOSTIC SYSTEM CHECK INDEX  table under SELF-DIAGNOSTIC SYSTEM. After performing diagnostic system check, go to next step.
  2. Connect scan tool to Data Link Connector (DLC). DLC is located under left side of instrument panel. Using scan tool, select DISPLAY DTCs and retrieve any DTCs. If DTC is not retrieved as current, go to DIAGNOSTIC AIDS  .
  3. Replace control module for system in question. Perform programming as needed. For replacement procedure see REMOVAL & INSTALLATION  . After repairs are made, go to next step.
  4. Using scan tool clear DTCs. Operate vehicle within code enable criteria. If DTC does not reset, system is okay. If DTC resets, go to step  2 .
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