Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Raise the vehicle. Refer to JACKING AND LIFTING .
For the 9.5 inch and the 10.5 inch axles, remove the rear axle fill plug.

Fig 1: Rear Axle Fill Plug (9.5 & 10.5 Inch Axles)

Courtesy of GENERAL MOTORS CORP.

For the 11.5 inch axle, remove the fill plug.

Fig 2: Rear Axle Fill Plug (11.5 Inch Axles)
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.

Fig 3: Rear Axle Drain Plug

Courtesy of GENERAL MOTORS CORP.