Test Description

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

2. This step tests the transfer case electrical control of the lamp circuits.
3. This step helps determine if there is a short to ground in the suspect lamp circuits.
4. This step tests the suspect lamp circuits for a short to ground.
5. This step repairs a short to ground in the suspect lamp circuit.

Fig 1: Diagnostic System Check - Transfer Case Shift Control Switch Indicator Always On - Two or More
Courtesy of GENERAL MOTORS CORP.