Tow/Haul Mode - GMC 2010 Sierra Owner's Manual

Tow/Haul Mode

Vehicles with an automatic transmission have a tow/
haul mode. The tow/haul mode adjusts the transmission
shift pattern to reduce shift cycling, providing increased
performance, vehicle control, and transmission cooling
when towing or hauling heavy loads.
3-36
The selector button is located on the end of the shift
lever. Turn the tow/haul on and off by pressing the
button. When the tow/haul is on, a light on the
instrument panel cluster will come on.
See Tow/Haul Mode Light on page 4 48 for more
information.
Also see Tow Haul Mode under Towing a Trailer on
page 5 55 for more information.