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Test Description

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

  1. 2. Tests for an intermittent condition.
  2. 3. Determines whether the failure is the result of a faulty 4WD system.
  3. 4. Determines if the failure is the result of a faulty instrument cluster.
  4. 5. Determines if the failure is the result of a faulty PCM.
Fig 1: 4WD Indicator Always On
G01481205Courtesy of GENERAL MOTORS CORP.
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