Extension Housing Rear Oil Seal for GMC Truck Savana 2000

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Driveline Axle.



3. Remove the rear extension oil seal.

Required Tools

J 21426 Rear Extension Seal Installer

1. Install the new seal using J 21426 Rear Extension Seal Installer.
2. Coat the outer edge of the seal case with the non-hardening sealer provided.
3. Coat the seal lips with Transjel®.
4. Install the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement in Driveline Axle.
5. Lower the vehicle.
6. Fill the transmission to the proper level with Dexron® III Transmission Fluid. Refer to Transmission Fluid Check