Differential Components
WARNING: This page is about a different car, the 2005 GMC Yukon XL and 2005 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the planetary differential in cleaning solvent. Do not disassemble the planetary differential.
- Air dry and ensure all cleaning solvent is removed from the bushings in the pinion gears (3). Do not spin the pinion gears with compressed air.
- Inspect the pinion gears for chipped teeth.
- Inspect the pinion gears for debris embedded in the root of the teeth.
- Inspect the pinion gears for excessive side movement from worn bushings or shafts.
- Inspect the planetary differential assembly for cracks at the web (1) of the housing.
- Inspect the thrust washer surface (2) for scoring or excessive wear.
- Inspect the planetary differential for distortion.
- Inspect the planetary differential to mainshaft splines for excessive wear.
- Replace the planetary differential if any of the above conditions are found.
- Inspect the thrust washers for excessive wear or scoring.
- Replace the thrust washers if they are faulty.