Front Axle - GMC 2013 Sierra Owner's Manual

When to Change Lubricant
Refer to Maintenance Schedule on
page 11 3 to determine how often to
change the lubricant.
What to Use
Refer to Recommended Fluids and
Lubricants on page 11 12 to
determine what kind of lubricant
to use.

Front Axle

When to Check and Change
Lubricant
It is not necessary to regularly
check front axle fluid unless a leak
is suspected, or an unusual noise is
heard. 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.
1500 Series
A. Fill Plug
B. Drain Plug
I n f o r ma t i o n P r o v i d e d b y :
Vehicle Care
All Except 1500 Series
A. Fill Plug
B. Drain Plug
When the differential is cold, add
enough lubricant to raise the
level from 0 mm (0 in) to 3.2 mm
(1/8 in) below the fill
plug (A) hole.
When the differential is at
operating temperature (warm),
add enough lubricant to raise the
level to the bottom of the fill
plug (A) hole.
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