GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2008
🢒
Envoy - 4WD
🢒
Driveline/Axle
🢒
Propeller Shaft
🢒 Propeller Shaft Front Slip Yoke Oil Seal Replacement
Special Tools
•
J 21426
Extension Housing Seal Installer
•
J 36850
Transmission Assembly Lubricant
Removal Procedure
Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
Place a drain pan under the vehicle.
Remove the propeller shaft. Refer to
Rear Propeller Shaft Replacement
.
Remove the case extension housing rear oil seal. Use a flat-bladed tool and carefully pry the seal from the housing.
Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to
Case Extension Assembly Replacement
.
Installation Procedure
Lubricate the inside diameter of the new seal with
J 36850
.
Use the
J 21426
with a soft faced mallet to install the seal.
Install the seal to the extension housing.
Install the propeller shaft. Refer to
Rear Propeller Shaft Replacement
.
Remove the drain pan and lower the vehicle.
Fill the transmission to the proper level with DEXRON® VI transmission fluid. Refer to
Transmission Fluid Check
.