Transfer Case Output Shaft Seal Replacement - Rear

Removal Procedure

^ Tools Required
- J 26941 Needle Bearing Puller
- J 23907 Slide Hammer





1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.

Important: An index mark (reference mark) should be made on the rear propeller shaft pinion flange yoke and the rear differential pinion flange to ensure that the rear propeller shaft is installed in the same position from which it was removed. If this precaution is not observed, a driveline imbalance may result causing vibration, premature component wear or other undesirable conditions.

2. Place an index mark on the rear propeller shaft pinion flange yoke and the rear differential pinion flange.
3. Remove the 4 bolts, the 4 nuts and rear propeller shaft from the vehicle.
4. Remove the rear output shaft oil seal (1) from the transfer case using J 26941 with J 23907.


Installation Procedure

^ Tools Required
- J 37751 Oil Seal Installer
- J 36850 Transjel Transmission Assembly Lubricant





1. Install the new rear output shaft oil seal into the transfer case (1) using J 37751.
2. Apply J 36850 to the new rear output shaft oil seal lip.

Notice: Refer to Fastener Notice Service Precautions.

3. Install the rear propeller shaft into the vehicle. Secure the shaft with the 4 bolts and the 4 nuts.
^ Tighten the rear propeller shaft bolts and nuts to 50 Nm (37 ft. lbs.).
4. Check the transfer case oil level. Refer to Oil Replacement.
5. Apply GM P/N 12346004, or the equivalent, to the threaded portion of the transfer case oil level/filler plug.
6. Install the transfer case oil level/filler plug into the transfer case.
^ Tighten the transfer case oil level/filler plug to 28 Nm (21 ft. lbs.).
7. Lower the vehicle.