For 1990-2009 cars

#### Special Tools

• | J 6125-1B Slide Hammer

• | J-08614-A Pinion Flange Holder and Remover

• | J 23129 Universal Seal Remover

• | J 29873 Injector Nozzle Socket 30 mm

• | J 44765 Seal Installer

• | J 45019 Universal Puller

### Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the transmission mount. Refer to Transmission Rear Mount Replacement.
3. Remove the transmission manual shift shaft nut (1).
4. Disconnect the shift linkage (2) from the transmission.
5. Place the transmission in neutral by rotating the transmission shift shaft clockwise 2 clicks.
6. Remove the propeller shaft. Refer to Propeller Shaft Replacement.
7. Install J-08614-A to the drive flange.
8. While holding J-08614-A , remove the drive flange nut (5) using J 29873 .
9. Remove J-08614-A from the drive flange.
10. Remove the drive flange thrust washer (4).
11. Remove the drive flange (2) using J 45019 .
12. Remove the drive flange O-ring seal (3) from the drive flange.
13. Use J 6125-1B and J 23129 to remove the transmission case extension seal (1).

### Installation Procedure

Note: Install the seal onto the tool before installing into the case to prevent damage to the seal.

1. Using J 44765 (2) install the new transmission case extension seal (1).
2. Install a NEW drive flange O-ring seal (3) into the drive flange.
3. Install the drive flange (2) to the transmission output shaft.
4. Install a NEW drive flange thrust washer (4).
5. Apply LOCTITE 272 (GM P/N 89021297) to the NEW drive flange nut threads.
6. Install the J-08614-A to the drive flange.

Caution: Refer to Fastener Caution in the Preface section.

7. While holding J-08614-A Install a NEW drive flange nut (5) using J 29873 . Tighten the nut to 60 N·m (44 lb ft).
8. Remove J-08614-A from the drive flange.
9. Install the propeller shaft. Refer to Propeller Shaft Replacement.
10. Place the transmission in the park position by rotating the shift shaft fully counterclockwise.
11. Connect the shift linkage (2) to the transmission.
12. Install the transmission manual shift shaft nut (1) and tighten to 9 N·m (80 lb in).
13. Install the transmission mount. Refer to Transmission Rear Mount Replacement.
14. Check the transmission fluid level. Refer to Transmission Fluid Check.
15. Lower the vehicle.