Rear Axle; When To Check Lubricant - GMC 2004 Yukon XL Owner's Manual

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
1500 Series shown, 2500 similar
To get an accurate reading, the vehicle should be on a
level surface.
•
The proper level for the 1500 Series is from
5/8 inch to 1 5/8 inch (15 mm to 40 mm) below the
bottom of the filler plug hole.
•
The proper level for the 2500 Series is from
0 to 1/2 inch (0 to 13 mm) below the bottom of the
filler plug hole.
•
The proper level for the 1500 and 2500 series
vehicles with QUADRASTEER™ (4-Wheel Steer) is
from 0 to 1/4 inch (0 to 6 mm) below the filler
plug hole.
Add only enough fluid to reach the proper level.
What to Use
To determine what kind of lubricant to use, see
Recommended Fluids and Lubricants on page 6-14.
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