GMC 2006 Canyon - Manual (Page 322)

Rear Axle
When to Check and Change 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.
If the level is below the bottom of the filler plug hole,
located on the rear axle, you will need to add some
lubricant. Add enough lubricant to raise the level to the
bottom of the filler plug hole.
What to Use
See Recommended Fluids and Lubricants on page 6-13
to determine which kind of lubricant to use.
Four-Wheel Drive
Lubricant checks in this section apply to this vehicle.
There are two additional systems that need lubrication.
Transfer Case
When to Check Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant. See Additional Required
Services on page 6-6.
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.
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