Chevrolet Silverado / GMC Sierra. Service manual — part 2809

Fig. 12: Removing Front Output Shaft Seal With Flathead Screwdriver
Courtesy of GENERAL MOTORS CORP.

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

2. Remove the transfer case shield, if equipped. Refer to Transfer Case Shield

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Replacement.

3. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement .

4. Remove the front output shaft seal by inserting a flat-tipped screwdriver behind the inner

race of the seal.

5. Pry the inner seal race forward.

Fig. 13: View Of Inner Seal Race & Front Output Shaft
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The front output shaft seal is a two piece internal seal. The

inner seal race is a force fit on the front output shaft.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

6. Using a small pry bar, move the inner seal race forward on the front output shaft.

7. Remove the inner seal race from the front output shaft.

Fig. 14: Removing Output Shaft Seal From Transfer Case With Flathead
Screwdriver
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

8. Insert a flat-tipped screwdriver or small pry bar into the space between the lip of the outer

race of the seal and the transfer case.

9. Remove the remaining part of the output shaft seal from the transfer case.

Installation Procedure

Fig. 15: View Of Seal Installation Special Tools
Courtesy of GENERAL MOTORS CORP.

1. Install the J 43484 (2) to the J 8092 (1). See Special Tools.

2. Install a NEW seal onto J 43484 . See Special Tools.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado