DEFINITION: Evidence of fluid loss at or near the drive pinion yoke and/or on surrounding components.

The slip yoke barrel has burrs, or is nicked, corroded, or worn.

1. Inspect the slip yoke for burrs.

Minor burrs can be removed by careful use of crocus cloth or fine stone honing.

2. If the is badly burred, corroded or worn, replace the yoke. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
3. Replace the transmission rear oil seal. Refer to the following:

•	Mainshaft Rear Oil Seal in Manual Transmission - M49.

•	Mainshaft Rear Oil Seal in Manual Transmission - MM6.

•	Extension Housing Rear Oil Seal in Automatic Transmission - 4L60-E.

The transmission rear oil seal is worn or damaged.

Replace the oil seal. Refer to the following: