Transfer case control 246 np8, fluid capacity

2006 GMC SIERRA
275,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BLCKLBRTRVR
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Why is it when I drain transfer case there is about 4 quarts that come out but manual says to put back 2 quarts?
Jan 15, 2021 at 9:45 AM
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SEVAG P
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Hi,

The system can be overfilled from previous maintenance transfer case oil capacity is 2 quarts as describe in workshop manual check fig 1.
check fig 2 fill plug is the (1) drain plug is the (2).
Jan 15, 2021 at 12:04 PM