High/Low Shift Components Cleaning and Inspection

WARNING: This page is about a different car, the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: High/Low Shift Components Cleaning And Inspection Points

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 Actuator Cam Retaining Ring TIP: Inspect the ring for wear or damage.
2	Transfer Case Actuator Cam Spacer TIP: Inspect the spacer for wear or damage.
3	Transfer Case Actuator Cam TIP: Inspect the cam for wear on the roller surface and damage to the splines. Witness marks on the splines are normal.
4	Transfer Case Control Actuator Shaft TIP: Inspect the shaft splines for excessive wear. The component must be replaced if damage is found.
5	Transfer Case Actuator Shaft Gear Teeth Inspect for chipped teeth, excessively worn gear surfaces, and debris embedded in the root of the teeth. Inspect the shaft splines for excessive wear. Witness marks on the splines are normal.