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Filling Procedure

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Differential Drain Plug
    GM912464Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  1. Install the drain plug to the differential and tighten to 39 N.m (29 lb ft).
    2. Fig 2: Differential Fill Plug
    GM912461Courtesy of GENERAL MOTORS CORP.
  2. Clean any dirt from around the differential fill plug.
  3. Remove the fill plug from the differential.
  4. Fill the differential with 75W90 synthetic axle lubricant, GM P/N 12378261 (Canadian P/N 10953455) or equivalent. Refer to Approximate Fluid Capacities .
  5. Inspect the gear lubricant 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 to the differential and tighten to 39 N.m (29 lb ft).
  7. Lower the vehicle.
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