High/Low Shift Components Cleaning and Inspection

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: High/Low Shift Components Cleaning and Inspection

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Inspect all components or sub-components and perform any repair procedure necessary to fix the damage. If the damage cannot be repaired, replace the component or sub-component as indicated. Clean all components in cleaning solvent and air dry.
1	Transfer Case High/Low Clutch Inner Splines Tip: Inspect the inner splines for excessive looseness on the rear output shaft.
2	Transfer Case High/Low Clutch Teeth Tip: Inspect the engagement teeth for chips or excessive wear.
3	Transfer Case High/Low Shift Fork Collar Tip: Inspect the shift fork collar for wear.
4	Transfer Case High/Low Shift Fork Pads Tip: Inspect the pads for wear.
5	Transfer Case High/Low Shift Fork Tip: Inspect for cracks, broken areas, or other damage. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
6	Transfer Case Control Actuator Shaft Tip: Inspect the shaft splines for excessive wear. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
7	Transfer Case High/Low Shift Fork Pin Tip: Inspect the pin for wear. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
8	Transfer Case High/Low Shift Fork Spring Assembly Tip: Inspect the cam lobes for wear or roughness. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
9	Transfer Case Shift Fork Spring Tip: Inspect the spring for breakage. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .