Rear Axle
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

To get an accurate reading, the vehicle should be on a level surface.
The proper level is from 0 to 3/8 inch (0 to 10 mm) below the bottom of the filler plug hole, located on the rear axle.
What to Use
To determine what kind of lubricant to use.
See also:
Express-Down Window
AUTO (Express-down): The driver’s and front
passenger’s window switches have an
express-down feature that allows you to lower the
window without holding the switch down. Press
down briefly on ...
Automatic Operation
AUTO (Automatic): When automatic operation
is active, the system will control the inside
temperature, the air delivery mode, and the
fan speed.
Use the steps below to place the entire system in
...
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:
...
