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Home >> Pontiac >> 2002 >> Aztek FWD >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Differentials & Axle Shafts - Rear Drive Axle >> Rear Axle Mechanical >> Repair Instructions >> Lubricant Change >> Filling Procedure

Filling Procedure

  1. Install the drain plug (2) and gasket to the differential.

    Tighten  Tighten the differential drain plug to 32 N.m (23 lb ft).

  2. Clean any dirt from around the differential fill plug (1).
    Fig 1: Locating Differential Fill Plug (1)
    G01759778Courtesy of GENERAL MOTORS CORP.
  3. Remove the fill plug from the differential.
  4. Fill the differential with synthetic gear oil GM P/N United States 12378514 Canada P/N 88901045.
  5. Inspect the gear oil level to ensure it is even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening.
  6. Install the fill plug (1) and gasket to the differential.

    Tighten  Tighten the fill plug to 32 N.m (23 lb ft).

  7. Lower the vehicle.

    Important  The vehicle must be driven in tight left and right circles after filling the differential in order to distribute the gear lubricant throughout the differential.

  8. Operate the vehicle in tight right and left circles in order to engage the all-wheel-drive system.
  9. Raise and support the vehicle.
  10. Remove the fill plug from the differential.
  11. Inspect the gear oil level to ensure it is even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening.
  12. Install the fill plug and gasket to the differential.

    Tighten  Tighten the fill plug to 32 N.m (23 lb ft).

  13. Lower the vehicle.