Grade Braking; Cruise Grade Braking - GMC 2011 Yukon Denali Owner's Manual

The Tow/Haul Mode works with the
®
Autoride feature, if the vehicle has
this, to enhance the ride when
trailering or with a loaded vehicle.
See
.

Grade Braking

The Grade Braking shift modes can
be activated by pressing the button
on the end of the shift control lever.
While in Range Selection Mode,
Grade Braking is deactivated
allowing the driver to select a
desired range of gears.
Grade Braking is only active while
the Tow/Haul Mode is selected and
you are not in the Range Selection
Mode. See Tow/Haul Mode listed
previously and
for more information on
the Range Selection Mode. Grade
Braking assists in maintaining
desired vehicle speeds when driving
on downhill grades by automatically
implementing a shift schedule that
utilizes the engine and transmission
to slow the vehicle. This reduces
wear on the braking system and
increases control of the vehicle.
Grade Braking monitors vehicle
speed, acceleration, engine torque
and brake pedal usage. Using this
information, it detects when the
vehicle is on a downhill grade and
the driver desires to slow the vehicle
by pressing the brake.
Also see
for more information.

Cruise Grade Braking

Cruise Grade Braking assists when
driving on a downhill grade.
It maintains vehicle speed by
automatically implementing a shift
schedule that uses the engine and
the transmission to slow the vehicle.
Driving and Operating
Cruise Grade Braking operates
while Cruise Control is engaged in
Tow/Haul Mode to assist in
maintaining vehicle speed under
loaded vehicle conditions. It utilizes
vehicle acceleration and deviation
from desired speed to determine the
correct gear for the operating
condition. If vehicle speed is above
the desired speed the transmission
will downshift to slow the vehicle.
If vehicle speed is near or below
desired speed the trans will upshift,
allowing vehicle speed to increase.
While in the Range Selection Mode,
Cruise Grade Braking is not
available.
See Range Selection Mode under
9-43
.