Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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.

2) - Tests the transfer case electrical control of the lamp circuits.
3) - Helps determine module failures.
4) - Tests the effected lamp circuit for an open or high resistance.
5) - Tests the lamp feed circuit for an open or short to ground.

Fig 1: Transfer Case Shift Control Switch Indicator Inoperative - One Or More Diagnosis

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