LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 833 (Transfer Case - NVG 236/246-NP8) >> Diagnostic Information and Procedures >> Front Axle Will Not Engage >> Test Description

Test Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. 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. This step tests the electrical function of the front axle actuator and helps determine mechanical and electrical malfunctions.
  2. This step tests for proper power and ground at the front axle actuator.
  3. This step tests the operation of the front axle control circuit.
  4. This step helps determine if the transfer case shift control module is able to monitor the front axle switch.
  5. This step tests the front axle switch circuit for an open or high resistance.
  6. This step measures the voltage between the front axle feed circuit and ground.
  7. This step tests the front axle control circuit for an open or high resistance.
  8. This step inspects the front axle for a mechanical malfunction.
  9. This step tests for open fuse in the front axle feed circuit.
    Fig 1: Diagnostic System Check - Front Axle Will Not Engage (Step 1-3)
    G01456584Courtesy of GENERAL MOTORS CORP.
    Fig 2: Diagnostic System Check - Front Axle Will Not Engage (Step 4-15)
    G01456585Courtesy of GENERAL MOTORS CORP.

scientia non olet · About LEMON Manuals