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Test B: Charge Indicator Light Always On

WARNING: This page is about a different car, the 2001 GMC Savana Special, 2001 GMC Savana Camper Special, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. If engine electrical diagnostic system check was performed, go to next step. If engine electrical diagnostic system check was not performed, go to ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition switch to RUN position. Observe charge indicator light on Instrument Panel Cluster (IPC). If charge indicator light illuminates, go to next step. If charge indicator light does not illuminate, concern may be intermittent. Check wiring and connections, see PRELIMINARY INSPECTION  under TROUBLE SHOOTING.
  3. Turn ignition switch to OFF position. Disconnect 4-pin generator harness connector. Turn ignition switch to RUN position. If charge indicator light remains illuminated, go to next step. If charge indicator light does not remain illuminated, go to step  5 .
  4. Test charge indicator control circuit for short to ground. See WIRING DIAGRAMS  . If problem exists, repair circuit as necessary and go to step  7 . If no problem exists, go to step  6 .
  5. Replace generator. See GENERATOR  under REMOVAL & INSTALLATION. After repairs are made, go to step  7 .
  6. Replace PCM. After replacement, reprogram PCM. See POWERTRAIN CONTROL MODULE under REMOVAL & INSTALLATION in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. After repairs are made, go to next step.
  7. Retest system to verify repair. If condition was found and corrected, system is okay. If condition was not found, go to step  3 .
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