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Four-wheel drive, Four-wheel drive -56, Transfer case – GMC 2010 Sierra User Manual

Page 516

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Four-Wheel Drive

Lubricant checks in this section also apply to these
vehicles.

Transfer Case

When to Check Lubricant

It is not necessary to regularly check transfer case 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

Electric Shift Transfer Case

A. Fill Plug

B. Drain Plug

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