Rear Axle Lubricant Level Inspection (11.5 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.

Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
Make sure the vehicle is level.
Inspect the rear axle for leaks. Repair as necessary.
Clean the area around the rear axle fill plug.

Fig 1: View Of Rear Axle Fill Plug

Courtesy of GENERAL MOTORS CORP.

Remove the rear axle fill plug and the seal.
Inspect the lubricant level.
Specification: The lubricant level should be between 17-21 mm (0.6-0.8 in) below the fill plug opening.
If the level is low, add lubricant until the level is between 17-21 mm (0.6-0.8 in) below the fill plug opening. Use the proper fluid. Refer to Fluid and Lubricant Recommendations .

NOTE: Refer to Fastener Notice .

Install the rear axle fill plug and gasket.
Tighten: Tighten the rear axle fill plug to 33 N.m (24 lb ft).
Lower the vehicle.