GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18281917) - 2025
Driving and Operating 201
Automatic Engine Grade Braking
A
u
tomatic Engine Grade Braking assists when
driving downhill. It maintains vehicle speed
by automatically implementing a shift pattern
that uses the engine and transmission to slow
the vehicle. The system will automatically
command downshifts to reduce vehicle speed.
The normal shift pattern will return once
the vehicle is on alow grade or when the
accelerator pedal is pressed.
While in the Electronic Range Select mode,
g
r
ade braking is deactivated, allowing the
driver to select a range and limiting the highest
gear available. Grade braking is available for
normal driving and in Tow/Haul mode.
AWD Mode: AWD mode provides drive torque
to all four wheels. Select AWD to improve
traction and control on slippery road surfaces,
such as gravel, sand, wet pavement, snow,
and ice.
Cruise Control
Adaptive Cruise Control
If equipped, Adaptive Cruise Control (ACC)
allows the cruise control set speed and
following gap to be selected. Read this entire
section before using this system. The following
gap is the following time between your vehicle
and avehicle detected directly ahead in your
path, moving in the same direction. If no vehicle
Terrain Mode
Dr
ive Select
Expected Vehicle Behavior Ideal Terrain
Drive (L3-Lx)
Minor deceleration when off throttle
and mild ability to modulate throttle.
Grassy fields,
mild two tracks,
rutted roads,
large rolling hills
L2
Moderate deceleration when off
throttle and moderate ability to
modulate throttle; brings vehicle to
astop in most cases.
Mild rock crawling,
heavy ruts,
short, steeper grades
L1
Significant deceleration when off
throttle and significant ability to
modulate throttle; brings vehicle to
astop in most cases.
Rock crawling downhill