GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2001
🢒
Safari - 4WD
🢒
Driveline/Axle
🢒
Transfer Case - NVG 136-NP4 (One Speed Automatic)
🢒 Extension Housing Rear Oil Seal
Tools Required
J 21426
Rear Extension Seal Installer
Removal Procedure
Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
Remove the propeller shaft. Refer to
Rear Propeller Shaft Replacement
in Driveline/Axle.
Remove the rear extension oil seal.
Installation Procedure
Install the new seal using
J 21426
and a soft faced mallet.
Install the propeller shaft.
Lower the vehicle.
Check the transmission fluid level.
Use Dexron® III Automatic Transmission Fluid.