GM Service Manual Online
For 1990-2009 cars only

When to Check Lubricant

It is not necessary to regularly check rear axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.

How to Check Lubricant


Object Number: 809097  Size: B3

To get an accurate reading, the vehicle should be on a level surface.

The proper level is from 5/8 inch to 1-5/8 inch (15 mm to 40 mm) below the bottom of the filler plug hole, located on the rear axle. Add only enough fluid to reach the proper level.

What to Use

Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants .