Yukon/Denali 4WD V8-4.8L VIN V (2005)
Transmission Extension Housing Rear Oil Seal Replacement
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Tools Required
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J 21426 Extension Housing Seal Installer
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J 36850 Transjel Lubricant
Removal Procedure
1. Place a drain pan under the vehicle.
2. Remove the propeller shaft.
3. Remove the case extension housing rear oil seal. Use a flat bladed tool and carefully pry the seal from the housing.
4. Inspect the case extension housing for damage. Replace the extension housing if necessary.
Installation Procedure
1. Lubricate the inside diameter of the NEW seal with J 36850 .
2. Using J 21426 and a soft faced mallet, install the seal.
3. Remove the drain pan.
4. Install the propeller shaft.
5. Fill the transmission to the proper level with DEXRON III transmission fluid.
