Front Axle - Chevrolet Avalanche 2004 Owner's Manual

Front Axle

When to Check and Change 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.
How to Check Lubricant
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.
When the differential is cold, add enough lubricant to
raise the level from 1/2 inch (12 mm) to about 5/8 inch
(18 mm) below the filler plug hole for the 1500 series
and from 1/4 inch (6 mm) to about 3/8 inch (10 mm)
below the filler plug hole for 2500 series.
When the differential is at operating temperature
(warm), add enough lubricant to raise the level to the
bottom of the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See Recommended Fluids
and Lubricants on page 6-13.
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