Front Output Shaft Seal Replacement TrailBlazer EXT, Envoy XL, Envoy XUV
                    Tools Required
J 45236 
 Output Shaft Seal Installer - Front
Removal Procedure 
- Raise the vehicle. Refer to 
Lifting and Jacking the Vehicle
.
 
- Remove the transfer case shield, if equipped. Refer to 
Transfer Case Shield Replacement
.
 
- Remove the front propeller shaft. Refer to 
Front Propeller Shaft Replacement
.
 
- Remove the dust shield from the front output shaft.
 
- Lightly tap the screw driver around the edge of the front output shaft seal.
 
- Pry the front out shaft seal from the transfer case.
 
- Remove the front output shaft seal from the transfer case.
 
Installation Procedure
- Install the 
J 45236 
 on the front output shaft.
 
- Align the front output shaft seal on
the J 45236-2 (1).
 
- Using the J 45236-1 (2), install the front output shaft seal.
 
- Remove the J 45236-1 and the J 45236-2.
 
- Install the dust shield on the front output shaft.
 
- Install the front propeller shaft. Refer to 
Front Propeller Shaft Replacement
.
 
- Inspect the transfer case fluid level. Refer to 
Transfer Case Fluid Replacement
 .
 
- Install the transfer case shield, if equipped. Refer to 
Transfer Case Shield Replacement
.
 
- Lower the vehicle. Refer to 
Lifting and Jacking the Vehicle
.
 
                            Front Output Shaft Seal Replacement TrailBlazer, Envoy, Rainier
                    
Tools Required
J 45236 
 Output Shaft Seal Installer - Front
Removal Procedure 
- Raise the vehicle. Refer to 
Lifting and Jacking the Vehicle
.
 
- Remove the fuel tank shield, if equipped. Refer to 
Fuel Tank Shield Replacement
.
 
- Remove the front propeller shaft. Refer to 
Front Propeller Shaft Replacement
.
 
- Remove the dust shield from the front output shaft.
 
- Lightly tap the screw driver around the edge of the front output shaft seal.
 
- Pry the front out shaft seal from the transfer case.
 
- Remove the front output shaft seal from the transfer case.
 
Installation Procedure
- Install the 
J 45236 
 on the front output shaft.
 
- Align the front output shaft seal on
the J 45236-2 (1).
 
- Using the J 45236-1 (2), install the front output shaft seal.
 
- Remove the J 45236-1 and the J 45236-2.
 
- Install the dust shield on the front output shaft.
 
- Install the front propeller shaft. Refer to 
Front Propeller Shaft Replacement
.
 
- Inspect the transfer case fluid level. Refer to 
Transfer Case Fluid Replacement
 .
 
- Install the fuel tank shield, if equipped. Refer to 
Fuel Tank Shield Replacement
.
 
- Lower the vehicle. Refer to 
Lifting and Jacking the Vehicle
.