GMC 2000 Yukon XL, Owner'S Manual, Page: 99 / 413

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Tow/Haul Mode Selector Switch
Your vehicle is equipped with a tow/haul mode. The
selector switch is located on the end of the column shift
lever. You can use this feature to assist when towing or
hauling a heavy load. See “Tow/Haul Mode” in the
Index for more information.
The Tow/Haul Mode also interacts with the Autoride
t
feature, if your vehicle is so equipped, to enhance the ride
when trailering or with a loaded vehicle. See “Autoride
t”
in the Index.
Four
-
Wheel Drive (If Equipped)
If your vehicle has four
-
wheel drive, you can send your
engine’s driving power to all four wheels for extra
traction. To get the most satisfaction out of four
-
wheel
drive, you must be familiar with its operation. Read the
part that follows before using four
-
wheel drive. See the
appropriate text for the transfer case in your vehicle.
NOTICE:
Driving in the 4
-
WHEEL HIGH (4H) or
4
-
WHEEL LOW (4L) positions for a long time
on dry or wet pavement could shorten the life
of your vehicle’s drivetrain.
Front Axle Locking Feature
The front axle locks and unlocks automatically when
you shift the transfer case. Some delay for the axle to
lock or unlock is normal.