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Home >> Chevrolet >> 2000 >> Tahoe 5.7 R, RWD >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules - Old Style >> Diagnostic Tests >> DTC 23/33: Retained Accessory Power Circuit Shorted To Ground Or Battery >> RAP Inactive

RAP Inactive

  1. Gain access to Blue 56-pin in-line harness connector, located under floor console trim plate. Disconnect Blue 56-pin in-line harness connector. Using DVOM connected to ground, backprobe console-side of Blue 56-pin in-line harness connector terminal B9. See Fig 1 . If battery voltage exists, go to next step. If battery voltage does not exist, go to step  3 .
  2. Check for short to voltage in Dark Blue wire between Black 6-pin BCM connector C2 terminal "C" and Blue 56-pin in-line harness connector terminal B9. See Figure . See WIRING DIAGRAMS  . Repair as necessary and retest operation. If Dark Blue wire checks okay, go to step  5 .
  3. Using DVOM connected to ground, backprobe instrument panel-side of Blue 56-pin in-line harness connector terminal B9. If battery voltage exists, go to next step. If battery voltage does not exist, system is okay at this time.
  4. Repair short to battery voltage in Dark Blue wire between Blue 56-pin in-line harness connector terminal B9 and instrument panel fuse block. See WIRING DIAGRAMS  . Retest operation.
  5. Replace Body Control Module (BCM). See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION. Retest operation.
Fig 1: Identifying Blue 56-Pin In-Line Harness Connector Terminals
G00012155Courtesy of GENERAL MOTORS CORP.
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