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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.

  1. 2)  - Tests the functionality of the Mode/Range buttons.
  2. 3)  - Tests the modules ability to operate the transfer case modes.
Fig 1: Transfer Case Shift Control Switch Inoperative Diagnosis
G01668687Courtesy of GENERAL MOTORS CORP.
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