Transmission Housing Oil Seal Replacement Rear Seal 4WD

Tools Required

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the transfer case adapter. Refer to Transfer Case Adapter Replacement in Driveline/Axle.



3. UsingJ 36825 andJ 23907 , pry the seal out of the extension housing.

1. PositionJ 36502-2A over the output shaft.



2. UsingJ 36502 install the rear output shaft seal.



3. RemoveJ 36502-2A from the output shaft.



4. Fill the space between the seal lips with grease GM P/N 1052497 or equivalent.
5. Install the transfer case adapter. Refer to Transfer Case Adapter Replacement in Driveline/Axle.
6. Check the transmission oil level. Refer to Fluid Replacement .
7. Lower the vehicle.

Transmission Housing Oil Seal Replacement Rear Seal 2WD

Tools Required

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.



3. Remove the rear oil seal from the rear case using the J 6125-1B  (1) and the J 23129  (2).
4. Remove the rear oil seal from the extension housing.

1. Using the J 36503 install the new rear oil seal.
2. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
3. Check the transmission oil level. Refer to Fluid Replacement .
4. Lower the vehicle.

Transmission Housing Oil Seal Replacement Front

Tools Required

J 38801 Input Shaft Seal Installer

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller shaft.
3. Remove the transmission. Refer to Transmission Replacement .



4. Remove the 2 clutch actuator bolts.
5. Remove the clutch actuator from the input shaft.



6. Remove the 6 bolts from the front bearing retainer.
7. Remove the front bearing retainer.



8. Using a hammer and a punch remove the seal from the front bearing retainer.
9. Remove the old gasket material from the front bearing retainer.

Important: Inspect the bearing retainer for any nicks or cracks that may result in a leak. Replace if necessary.

1. Place the seal in the front bearing retainer.
2. Using theJ 38801 install the seal.



3. Apply RTV gasket material to the inboard side of the bearing retainer.



4. Install the front bearing retainer to the transmission.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

5. Install the front bearing retainer bolts to the transmission.

Tighten
Tighten the 6 bearing retainer bolts to 14 N·m (10 lb ft).




6. Install the clutch actuator.
7. Install the clutch actuator bolts.

Tighten
Tighten the clutch actuator bolts to 8 N·m (71 lb in).

8. Install the transmission. Refer to Transmission Replacement .
9. Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
10. Inspect the fluid level. Refer to Fluid Replacement .
11. Lower the vehicle.