Four-Wheel Drive - Chevrolet TrailBlazer 2007 Owner's Manual

How to Check Lubricant
To get an accurate reading, the vehicle should be
on a level surface.
The proper level is from 0 to 3/8 inch (0 to 10 mm)
below the bottom of the filler plug hole, located
on the rear axle.
For vehicles equipped with the SS package,
the proper level is from 0.6 inch to 1.6 inches
(15 mm to 40 mm) below the bottom of the
filler plug hole, located on the rear axle. 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 527.
For vehicles equipped with the SS package,
to add lubricant when the level is low, use
SAE 75W–90 Synthetic Axle Lubricant (GM
Part No. U.S. 12378261, in Canada 10953455)
meeting GM Specification 9986115. To completely
refill after draining, add 4 ounces (118 ml)
of Limited-Slip Axle Lubricant Additive (GM
Part No. U.S. 1052358, in Canada 992694).
Then fill to the bottom of the filler plug hole with
the Synthetic Gear Lubricant.

Four-Wheel Drive

Transfer Case
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.
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