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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 900 (Rear Drive Axle) >> Repair Instructions >> Rear Axle Lubricant Level Inspection (8.6 Inch Axle)

Rear Axle Lubricant Level Inspection (8.6 Inch Axle)

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Make sure the vehicle is level.
  3. Inspect the rear axle for leaks. Repair as necessary.
  4. Clean the area around the rear axle fill plug.
  5. Fig 1: View Of Rear Axle Fill Plug (8.6 Inch Axle)
    GM390116Courtesy of GENERAL MOTORS CORP.
  6. Remove the rear axle fill plug.
  7. Fabricate a dipstick from a pipe cleaner or similar item. Form the pipe cleaner into an "L".
  8. Insert the pipe cleaner into the fill plug opening with the stem facing down.
  9. Remove the pipe cleaner and measure the distance from the bend in the pipe cleaner to the lubricant level.

    Specification:  The distance between the bend and the lubricant level should be 15-40 mm (0.6-1.6 in).

  10. If the measurement is greater than 40 mm (1.6 in), add lubricant until the level is between 15-40 mm (0.6-1.6 in) from the bottom edge of the fill plug hole. Use the proper fluid. Refer to Fluid and Lubricant Recommendations .
  11. NOTE: Refer to Fastener Notice .
  12. Install the rear axle fill plug.

    Tighten:  Tighten the rear axle fill plug to 33 N.m (24 lb ft).

  13. Lower the vehicle.