Removal Procedure

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 in General Information.

Fig 1: View Of Rear Axle Fill Plug

Courtesy of GENERAL MOTORS CORP.

Remove the fill plug.

Fig 2: Locating Rear Axle Drain Plug

Courtesy of GENERAL MOTORS CORP.

Remove the rear axle drain plug.
Drain the lubricant into a suitable container.
Inspect the drain plug for excessive metal particle accumulation. This accumulation is symptomatic of extreme wear.
Clean the drain plug.