All-Wheel Drive; Rear Axle - Chevrolet 2007 TrailBlazer Owner's Manua

All-Wheel Drive

When to Check Lubricant
It is not necessary to regularly check 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
If the level is below the bottom of the filler
plug hole, located on the transfer case,
you'll need to add some lubricant.
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To get an accurate
reading, the vehicle
should be on a
level surface.
Add enough lubricant to raise the level to the
bottom of the filler plug hole. Use care not
to overtighten the plug.
What to Use
To determine what kind of lubricant to use, see
Recommended Fluids and Lubricants on page 529.

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.