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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1121 (Rear Drive Axle) >> Repair Instructions >> Rear Axle Lubricant Level Inspection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View of Fill Plug
    GM1978072Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Clean any dirt from around the differential fill plug (1).
  3. Remove the fill plug (1) from the differential and drain the fluid.
  4. Check the differential fluid level. It should be even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening.
  5. Add new fluid if necessary.
  6. Fill the differential with 75W90 synthetic axle lubricant, GM P/N 12378261 (Canadian P/N 10953455) or equivalent. Refer to Approximate Fluid Capacities .
    7. NOTE: Refer to Fastener Notice .
  7. Install the differential fill plug (1) to the differential.

    Tighten:  Tighten the differential fill plug (1) to 39 N.m (29 lb ft).

  8. Lower the vehicle.
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