Hummer H3T Owner's Manual page 219

04AKENG59_H3T.fm Page 219 Thursday, July 31, 2008 12:07 PM
If the transfer case cannot make a
requested shift, it will return to the
last chosen setting.
If there is a problem with the four-
wheel drive system, the SERV
4WD message will appear on the
Driver Information Center display.
See "Driver Information Center
Messages" in Section 1.
Shifting the Transfer Case
Between Four-Wheel High and
Four-Wheel High Lock
To shift between Four-Wheel High
and Four-Wheel High Lock, the
vehicle must be traveling at less
than 120 km/h (75 mph). Press
and release the Four-Wheel High
or Four-Wheel High Lock button.
It may be necessary to drive in R
(Reverse) for 7.5 m (25 feet) in
order for the lock feature to disen-
gage.
NOTICE
Do not shift the transmission
into gear until the transfer case
indicator light stops flashing.
Otherwise, the transfer case
could be damaged.
Section 3
Shifting the Transfer Case Into
or Out of Four-Wheel Low Lock
To shift into or out of the Four-
Wheel Low Lock setting, the igni-
tion must be on, the vehicle must
be stopped or moving less than
5 km/h (3 mph) (preferably
moving between 1 and 3 km/h)
(1 and 2 mph) and the transmis-
sion must be in N (Neutral). Press
and release the desired transfer
case button.
If your vehicle has a manual trans-
mission, push the clutch pedal all
the way to the floor while you
press the button or the shift will
not be completed.
The indicator light will flash while
you are shifting and then remain
illuminated when the shift is
completed.
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