Four-Wheel Drive - Chevrolet 2006 TrailBlazer EXT Owner's Manual

What to Use
To determine what kind of lubricant to use, see
Recommended Fluids and Lubricants on page 6-12.
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.
How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you'll need to add some lubricant. 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 6-12.
To get an accurate
reading, the vehicle should
be on a level surface.
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