Removal Procedure

Fig 1: Removing Case Extension Housing Rear Oil Seal

Courtesy of GENERAL MOTORS CORP.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Place a drain pan under the vehicle.
Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
Remove the case extension housing rear oil seal. Use a flat bladed tool and carefully pry the seal from the housing.
Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Case Extension Assembly Replacement .