Rear Axle Lubricant Level Inspection (11.5 Inch Axle)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis 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 (USA and Canada) .

CAUTION: Refer to Fastener Caution .

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.