Four-Wheel Drive; Transfer Case - GMC Envoy XL 2003 Owner's Manual

Four-wheel Drive

Lubricant checks in this section also apply to these
vehicles. However, 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 Part
Maintenance Inspections on page 6-15.
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C:
Periodic
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
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See Part D: Recommended
Fluids and Lubricants on page 6- 17.
To get an accurate
reading, the vehicle should
be on a level surface.
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