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Black plate (32,1)
GMC Yukon Denali/Yukon XL Denali Owner Manual - 2012 - CRC 2nd
Edition - 11/10/11
9-32
Driving and Operating
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.
Drive Systems
All-Wheel Drive
With this feature, engine power is
sent to all four wheels all the time.
This is like four-wheel drive, but
there is no separate lever or switch
to engage or disengage the front
axle. It is fully automatic, and
adjusts itself as needed for road
conditions.
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