GMC Yukon 2007 Owner's Manual page 431

Your vehicle is equipped with a button at the end
of the shift lever which, when pressed, enables
tow/haul. Your vehicle may be equipped with
®
Autoride which further improves your vehicle's
ride while towing. See Autoride
for more information. When the button is pressed,
a light on the instrument panel will illuminate to
indicate that Tow/Haul has been selected.
Tow/Haul may be turned off by pressing the button
again, at which time the indicator light on the
instrument panel will turn off. The vehicle will
automatically turn off Tow/Haul every time
it is started.
Tow/Haul is designed to be most effective
when the vehicle and trailer combined weight
is at least 75 percent of the vehicle's Gross
Combined Weight Rating (GCWR).
See Weight of the Trailer later in this section.
®
on page 427
Tow/Haul is most useful under the following
driving conditions:
•
When pulling a heavy trailer or a large or
heavy load through rolling terrain.
•
When pulling a heavy trailer or a large or
heavy load in stop and go traffic.
•
When pulling a heavy trailer or a large or
heavy load in busy parking lots where
improved low speed control of the vehicle
is desired.
Operating the vehicle in tow/haul when lightly
loaded or with no trailer at all will not cause
damage. However, there is no benefit to the
selection of Tow/Haul when the vehicle is
unloaded. Such a selection when unloaded may
result in unpleasant engine and transmission
driving characteristics and reduced fuel economy.
Tow/Haul is recommended only when pulling a
heavy trailer or a large or heavy load.
431