Transfer Case Front Half Cleaning And Inspection

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transfer Case Front Half Cleaning and Inspection Points

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
CAUTION: Refer to Machined Surface Damage Caution . 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 the front case half in cleaning solvent and air dry. Remove any sealant from the sealing surface.
1	Transfer Case Front Half Assembly NOTE: Inspect for cracks, broken areas, or other damage. The component must be replaced if damage is found.
2	Transfer Case Front Output Shaft Front Bearing Bore NOTE: Replace the front case half assembly if a bearing has spun or if cracks are detected.
3	Transfer Case Four Wheel Drive Actuator Lever Shaft Bearing Bore NOTE: Replace the front case half assembly if a bearing has spun or if cracks are detected.
4	Transfer Case Studs (Qty: 6) NOTE: Replace any damaged studs
5	Transfer Case Input Shaft Bearing Bore NOTE: Replace the front case half assembly if a bearing has spun or if cracks are detected.
6	Case Sealing Surface NOTE: Repair small scratches or nicks with a soft stone.
7	Transfer Case Thread Bolt Holes NOTE: Repair any damaged threads.
8	Transfer Case Locating Pin Holes NOTE: Replace the front case half assembly if the locating pin holes are out of round or damaged.
9	Transfer Case Locating pins (Qty: 2) NOTE: Repair or replace loose, missing or damaged locating pins.
10	Transfer Case Four Wheel Drive Actuator Lever Shaft Bearing Assembly Procedure Replace the bearing if roughness, brinelling or pitting is detected. Refer to Transfer Case Four Wheel Drive Actuator Lever Shaft Bearing Replacement - Front .