Lubricant Level Inspection - Rear Drive Axle (9.75 Inch Axle)

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 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 in General Information.
Ensure the vehicle is level.
Inspect the rear axle for leaks. Repair as necessary.
Clean the area around the rear axle fill plug.
Remove the rear axle fill plug.

Fig 1: Removing Rear Axle Fill Plug (9.75 Inch Axle)

Courtesy of GENERAL MOTORS CORP.

Inspect the lubricant level.
Specification: The lubricant level should be between 0-4 mm (0-0.16 in) below the fill plug opening.
If the level is low, add lubricant until the level is even with the bottom edge of the fill plug opening. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the rear axle fill plug.
Tighten: Tighten the rear axle fill plug to 21 N.m (15 lb ft).
Lower the vehicle.