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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1574 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B0951: Dimming Circuit >> Test Description

Test Description

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 numbers below refer to the step numbers on the diagnostic table.

  1. 3. Tests for an open in the TBC 5 battery positive voltage supply circuit within the body wiring harness extension harness.
  2. 4. Tests for voltage at the LED dimming signal circuit.
  3. 5. Tests for voltage at the LED dimming signal circuit when the headlamp switch is in the OFF position.
  4. 11. After replacement of the BCM you must calibrate the new module for proper operation.
Fig 1: DTC B0951 - Diagnostic Chart
G01640380Courtesy of GENERAL MOTORS CORP.
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