GM Service Manual Online
For 1990-2009 cars only

When to Check Lubricant

It is not necessary to regularly check front 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.

Notice: If you drive your vehicle through deep water that is higher than the front or rear axle, water may enter the axle housing and cause the axle lubricant to break down. This could damage the gears inside. Avoid driving your vehicle through deep water.

You should avoid driving your vehicle through deep puddles or standing water. If you must drive through water that is higher than the front or rear axle, see your dealer immediately afterward to have the condition of the axle lubricant checked.

How to Check Lubricant


Object Number: 1454800  Size: B3

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

If the level is below the bottom of the filler plug hole, you may need to add some lubricant.

Add enough lubricant to raise the level to the bottom of the filler plug hole.

What to Use

To determine what kind of lubricant to use see Part C: Recommended Fluids and Lubricants .