2020 GMC ACADIA brake

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
130 Instruments and Controls
{Warning
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
Electric Parking Brake
Light
MetricEnglish
This light comes on when the
parking brake is applied. If the light
continues flashing after the parking
brake is released, or while driving,
there is a problem with the Electric Parking Brake system. A message
may also display in the Driver
Information Center (DIC).
If the light does not come on,
or remains flashing, see your dealer.
Service Electric Parking
Brake Light (Uplevel and
Midlevel Cluster Only)
On some vehicles the service
electric parking brake light should
come on briefly when the vehicle is
started. If it does not come on, have
it fixed so it will be ready to warn if
there is a problem. For vehicles with
the reconfigurable cluster, this light
may not come on when the vehicle
is started.
If this light stays on, the vehicle
should be taken to a dealer as soon
as possible. See
Electric Parking
Brake 0207. A message may also
display in the Driver Information
Center (DIC).
Antilock Brake System
(ABS) Warning Light
This warning light should come on
briefly when the vehicle is turned
on. If the light does not come on,
have it fixed so it will be ready to
warn if there is a problem.
If the light comes on while driving,
safely stop as soon as it is possible
and turn off the vehicle. Then turn
on the vehicle again to reset the
system.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Instruments and Controls 131
If the ABS warning light stays on,
or comes on again while driving, the
vehicle needs service. A chime may
also sound when the light stays on.
If the ABS warning light is the only
light on, the vehicle has regular
brakes, but ABS is not functioning.
If both the ABS warning light and
the brake system warning light are
on, ABS is not functioning and there
is a problem with the regular brakes.
See your dealer for service.
SeeBrake System Warning Light
0 129.
Gear Shifting Light
If equipped, this light will display
when Performance Algorithm Liftfoot
(PAL) is activated. See Driver Mode
Control 0212.
Tow/Haul Mode Light
For vehicles with the Tow/Haul
Mode feature, this light comes on
when the Tow/Haul Mode has been
activated.
See Tow/Haul Mode 0206.
Hill Descent Control Light
If equipped, the Hill Descent Control
light comes on when the system is
ready for use. When the light
flashes, the system is active.
See Hill Descent Control (HDC)
0 211.
Lane Keep Assist (LKA)
Light
After the vehicle is started, this light
turns off and stays off if LKA has not
been turned on or is unavailable.
If available, this light is white if LKA
is turned on, but not ready to assist.
This light is green if LKA is turned
on and is ready to assist.
LKA may assist by gently turning
the steering wheel if the vehicle
approaches a detected lane
marking. The LKA light is amber
when assisting.
This light flashes amber as a Lane
Departure Warning (LDW) alert, to
indicate that the lane marking has
been crossed.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
146 Instruments and Controls
.Brakes
. Steering
. Ride Control Systems
. Driver Assistance Systems
. Cruise Control
. Lighting and Bulb Replacement
. Wiper/Washer Systems
. Doors and Windows
. Seat Belts
. Airbag Systems
. Engine and Transmission
. Tire Pressure
. Battery
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
vehicle's propulsion power is
reduced. A reduction in propulsion
power can affect the vehicle's ability
to accelerate. If this message is on,
but there is no observed reduction
in performance, proceed to your
destination. The performance may be reduced the next time the vehicle
is driven. The vehicle may be driven
while this message is on, but
maximum acceleration and speed
may be reduced. Anytime this
message stays on, or displays
repeatedly, the vehicle should be
taken to your dealer for service as
soon as possible.
Under certain operating conditions,
propulsion will be disabled. Try
restarting after the vehicle has been
off for 30 seconds.
Vehicle Speed Messages
SPEED LIMITED TO XXX
KM/H (MPH)
This message shows that the
vehicle speed has been limited to
the speed displayed. The limited
speed is a protection for various
propulsion and vehicle systems,
such as lubrication, thermal, brakes,
suspension, Teen Driver if
equipped, or tires.
Vehicle
Personalization
The following are all possible
vehicle personalization features.
Depending on the vehicle, some
may not be available.
For System, Apps, and Personal
features and functions, see
“Settings”
in the infotainment
manual.
To access the vehicle
personalization menu:
1. Touch the Settings icon on the Home Page of the infotainment
display.
2. Touch Vehicle to display a list of available options.
3. Touch to select the desired feature setting.
4. Touch
9orRto turn a feature
off or on.
5. Touch
zto go to the top level
of the Settings menu.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
148 Instruments and Controls
Forward Collision System
This setting controls the vehicle
response when detecting a vehicle
ahead of you. The Off setting
disables all FCA and AEB functions.
With the Alert and Brake setting,
both FCA and AEB are available.
The Alert setting disables AEB. See
Automatic Emergency Braking
(AEB)0234.
Touch Off, Alert, or Alert and Brake.
Front Pedestrian Detection
This feature may help avoid or
reduce the harm caused by
front-end crashes with nearby
pedestrians.
See Front Pedestrian Braking (FPB)
System 0236.
Select Off, Alert, or Alert and Brake.
Adaptive Cruise Go Notifier
This setting determines if an alert
will appear when Adaptive Cruise
Control brings the vehicle to a
complete stop and the vehicle
ahead of you starts moving again.
See Adaptive Cruise Control 0216. Touch Off or On.
Lane Change Alert
This setting specifies if an alert will
display on the outside mirror to help
you avoid crashing into a vehicle in
your blind spot, or rapidly
approaching your blind spot, during
a lane change maneuver. See
Lane
Change Alert (LCA) 0238.
When Lane Change Alert is
disabled, Side Blind Zone Alert is
also disabled.
Touch Off or On.
Rear Cross Traffic Alert
This setting specifies if an alert will
display when the vehicle detects
approaching rear cross traffic when
in R (Reverse). See Assistance
Systems for Parking or Backing
0 227.
Touch Off or On.
Comfort and Convenience
Touch and the following may
display:
. Chime Volume .
Hands Free Liftgate/Trunk
Control
. Reverse Tilt Mirror
. Remote Mirror Folding
. Auto Wipe in Reverse Gear
. Extended Hill Start Assist
Chime Volume
This setting determines the chime
volume level.
Touch the controls on the
infotainment display to adjust the
volume.
Hands Free Liftgate/Trunk Control
The liftgate may be operated with a
kicking motion under the rear
bumper left of the trailer hitch cover.
See Liftgate 021.
Select Off, On-Open and Close,
or On-Open Only.
Reverse Tilt Mirror
When on, both the driver and
passenger, driver, or passenger
outside mirrors will tilt downward
when the vehicle is shifted to
R (Reverse) to improve visibility of

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
158 Lighting
.The parking brake is released or
the vehicle is not in P (Park).
When the DRL are on, the taillamps
and other lamps will not be on.
The DRL turn off when the
headlamps are turned to
Oor the
ignition is off. For vehicles first sold
in Canada, the DRL can only be
turned off when the vehicle is
parked.
Automatic Headlamp
System
When the exterior lamp control is
set to AUTO and it is dark enough
outside, the headlamps come on
automatically.
There is a light sensor on top of the
instrument panel. Do not cover the
sensor.
The system may also turn on the
headlamps when driving through a
parking garage or tunnel.
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it
is light outside when the vehicle
leaves the garage, there is a slight
delay before the automatic
headlamp system changes to the
Daytime Running Lamps (DRL).
During that delay, the instrument
cluster may not be as bright as
usual. Make sure the instrument panel brightness control is in the full
bright position. See
Instrument
Panel Illumination Control 0160.
When it is bright enough outside,
the headlamps will turn off or may
change to DRL.
The automatic headlamp system
turns off when the exterior lamp
control is turned to
Oor the ignition
is off.
For vehicles sold in Canada, this
control only works when the
transmission is in P (Park).
Lights On with Wipers
If the windshield wipers are
activated in daylight with the engine
on, and the exterior lamp control is
in AUTO, the headlamps, parking
lamps, and other exterior lamps
come on. The transition time for the
lamps coming on varies based on
wiper speed. When the wipers are
not operating, these lamps turn off.
Move the exterior lamp control to
O
or;to disable this feature.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Driving and Operating 173
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . 174
Distracted Driving . . . . . . . . . . . . 174
Defensive Driving . . . . . . . . . . . . . 175
Drunk Driving . . . . . . . . . . . . . . . . . 175
Control of a Vehicle . . . . . . . . . . . 176
Braking . . . . . . . . . . . . . . . . . . . . . . . 176
Steering . . . . . . . . . . . . . . . . . . . . . . 176
Off-Road Recovery . . . . . . . . . . . 177
Loss of Control . . . . . . . . . . . . . . . 177
Off-Road Driving . . . . . . . . . . . . . 178
Driving on Wet Roads . . . . . . . . 182
Hill and Mountain Roads . . . . . 183
Winter Driving . . . . . . . . . . . . . . . . 184
If the Vehicle Is Stuck . . . . . . . . 185
Vehicle Load Limits . . . . . . . . . . . 186
Starting and Operating
New Vehicle Break-In . . . . . . . . . 190
Ignition Positions . . . . . . . . . . . . . 190
Starting the Engine . . . . . . . . . . . 192
Stop/Start System . . . . . . . . . . . . 193
Engine Heater . . . . . . . . . . . . . . . . 194 Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . 196
Shifting Into Park . . . . . . . . . . . . . 197
Shifting out of Park . . . . . . . . . . . 198
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 199
Active Fuel Management . . . . . 199
Extended Parking . . . . . . . . . . . . 200
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 200
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 201
Automatic Transmission
Automatic Transmission . . . . . . 201
Manual Mode . . . . . . . . . . . . . . . . . 205
Tow/Haul Mode . . . . . . . . . . . . . . . 206
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . 206
Brakes
Electric Brake Boost . . . . . . . . . . 206
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 206
Electric Parking Brake . . . . . . . . 207
Brake Assist . . . . . . . . . . . . . . . . . . 208
Hill Start Assist (HSA) . . . . . . . . 209
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 209
Hill Descent Control (HDC) . . . 211
Driver Mode Control . . . . . . . . . . 212
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 214
Adaptive Cruise Control . . . . . . 216
Driver Assistance Systems
Driver Assistance Systems . . . 225
Assistance Systems for Parking or Backing . . . . . . . . . . 227
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 231
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 231
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . 234
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . 236
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 238
Lane Change Alert (LCA) . . . . . 238
Lane Keep Assist (LKA) . . . . . . 240
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . 242
Recommended Fuel . . . . . . . . . . 242
Prohibited Fuels . . . . . . . . . . . . . . 243

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
174 Driving and Operating
Fuels in Foreign Countries . . . 243
Fuel Additives . . . . . . . . . . . . . . . . 243
Filling the Tank . . . . . . . . . . . . . . . 243
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 245
Trailer Towing
General Towing
Information . . . . . . . . . . . . . . . . . . 246
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 246
Trailer Towing . . . . . . . . . . . . . . . . 250
Towing Equipment . . . . . . . . . . . . 253
Trailer Sway Control (TSC) . . . 256
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 258
Driving Information
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
. Set the climate controls to the
desired temperature after the
engine is started, or turn them
off when not required.
. On AWD vehicles, see Driver
Mode Control 0212.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require. .
Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
. Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep
your eyes on the road, keep your
hands on the steering wheel, and
focus your attention on driving.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
176 Driving and Operating
Control of a Vehicle
Braking, steering, and accelerating
are important factors in helping to
control a vehicle while driving.
Braking
Braking action involves perception
time and reaction time. Deciding to
push the brake pedal is perception
time. Actually doing it is
reaction time.
Average driver reaction time is
about three-quarters of a second. In
that time, a vehicle moving at
100 km/h (60 mph) travels 20 m
(66 ft), which could be a lot of
distance in an emergency.
Helpful braking tips to keep in mind
include:
.Keep enough distance between
you and the vehicle in front
of you.
. Avoid needless heavy braking.
. Keep pace with traffic. If the engine ever stops while the
vehicle is being driven, brake
normally but do not pump the
brakes. Doing so could make the
pedal harder to push down. If the
engine stops, there will be some
power brake assist but it will be
used when the brake is applied.
Once the power assist is used up, it
can take longer to stop and the
brake pedal will be harder to push.
Steering
Electric Power Steering
Caution
To avoid damage to the steering
system, do not drive over curbs,
parking barriers, or similar objects
at speeds greater than 3 km/h
(1 mph). Use care when driving
over other objects such as lane
dividers and speed bumps.
Damage caused by misuse of the
vehicle is not covered by the
vehicle warranty.
The vehicle has electric power
steering. It does not have power
steering fluid. Regular maintenance
is not required.
If power steering assist is lost due
to a system malfunction, the vehicle
can be steered, but may require
increased effort.
If the steering assist is used for an
extended period of time while the
vehicle is not moving, power assist
may be reduced.