Transmission Rear Oil Seal (NV3500): Removal
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Raise and support the vehicle. Remove the rear propeller shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVE AXLES article. Remove the rear oil seal from the rear case using the slide hammer and the universal seal remover. See Figure. Remove the rear oil seal from the extension housing.