
GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
254 Driving and Operating
Warning (Continued)
Always keep your attention on the road
and maintain proper vehicle position
within the lane, or vehicle damage,
injury, or death could occur. Always keep
the windshield, headlamps, and camera
sensors clean and in good repair. Do not
use LKA in bad weather conditions or on
roads with unclear lane markings, such as
construction zones.
{Warning
Using LKA while towing a trailer or on
slippery roads could cause loss of control
of the vehicle and a crash. Turn the
system off.
How the System Works
LKA uses a camera sensor installed on the
windshield ahead of the rearview mirror to
detect lane markings. It may provide brief
steering assist if it detects an unintended
lane departure. It may further provide an
audible alert, or the driver seat may pulse,
indicating that a lane marking has been
crossed.To turn LKA on and off, press
Aon the
center console. If equipped, the indicator
light on the button comes on when LKA is
on and turns off when LKA is disabled.
When on,
Ais white, if equipped,
indicating that the system is not ready to
assist.
Ais green if LKA is ready to
assist. LKA may assist by gently turning the
steering wheel if the vehicle approaches a
detected lane marking.
Ais amber when
assisting. It may also provide a Lane
Departure Warning (LDW) alert by flashing
Aamber if the vehicle crosses a
detected lane marking. Additionally, there
may be three beeps on the right or left,
or the driver seat may pulse three times,
depending on the lane departure direction.
Take Steering
The LKA system does not continuously steer
the vehicle. If LKA does not detect active
driver steering, an alert and chime may be
provided. Steer the vehicle to dismiss. LKA
may become temporarily unavailable after
repeated take steering alerts.
When the System Does Not Seem to
Work Properly
The system performance may be
affected by:
.Close vehicles ahead.
.Sudden lighting changes, such as when
driving through tunnels.
.Banked roads.
.Roads with poor lane markings, such as
two-lane roads.
If the LKA system is not functioning
properly when lane markings are clearly
visible, cleaning the windshield may help.
A camera blocked message may display if
the camera is blocked. Some driver
assistance systems may have reduced
performance or not work at all. An LKA or
LDW unavailable message may display if the
systems are temporarily unavailable. This
message could be due to a blocked camera.
The LKA system does not need service. Clean
the outside of the windshield behind the
rearview mirror.
LKA assistance and/or LDW alerts may occur
due to tar marks, shadows, cracks in the
road, temporary or construction lane
markings, or other road imperfections. This

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
286 Vehicle Care
Properly torqued wheel nuts are necessary
to help prevent brake pulsation. When tires
are rotated, inspect brake linings for wear
and evenly tighten wheel nuts in the proper
sequence to torque specifications. See
Capacities and Specifications0361.
Brake pads should be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not
return to normal height, or if there is a
rapid increase in pedal travel. This could be
a sign that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts with
new, approved replacement parts. If this is
not done, the brakes may not work
properly. The braking performance can
change in many ways if the wrong brake
parts are installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir is filled
with GM approved DOT 4 brake fluid as
indicated on the reservoir cap. See Engine
Compartment Overview 0272 for the
location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum marks
on the brake fluid reservoir.
There are only two reasons why the brake
fluid level in the reservoir may go down:
.Normal brake lining wear. When new
linings are installed, the fluid level goes
back up.
.A fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed.
With a leak, the brakes will not
work well. Always clean the brake fluid reservoir cap
and the area around the cap before
removing it.
Do not top off the brake fluid. Adding fluid
does not correct a leak. If fluid is added
when the linings are worn, there will be too
much fluid when new brake linings are
installed. Add or remove fluid, as necessary,
only when work is done on the brake
hydraulic system.
{Warning
If too much brake fluid is added, it can
spill on the engine and burn, if the
engine is hot enough. You or others could
be burned, and the vehicle could be
damaged. Add brake fluid only when
work is done on the brake hydraulic
system.
When the brake fluid falls to a low level,
the brake warning light comes on. See Brake
System Warning Light 0109.
Brake fluid absorbs water over time which
degrades the effectiveness of the brake fluid.
Replace brake fluid at the specified intervals
to prevent increased stopping distance. See
Maintenance Schedule 0348.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
314 Vehicle Care
Use this rotation pattern when rotating
the tires.
Do not include the compact spare tire
in the tire rotation.
Adjust the front and rear tires to the
recommended inflation pressure on the
Tire and Loading Information label after
the tires have been rotated. SeeTire
Pressure 0307 and
Vehicle Load Limits 0209.
Reset the Tire Pressure Monitor System.
See Tire Pressure Monitor Operation
0 310. Check that all wheel nuts are properly
tightened. See
“Wheel Nut Torque”
under Capacities and Specifications
0 361, and “Removing the Flat Tire and
Installing the Spare Tire” underTire
Changing 0327.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
cause wheel nuts to become loose
over time. The wheel could come off
and cause a crash. When changing a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, a cloth
or paper towel can be used; however,
use a scraper or wire brush later to
remove all rust or dirt.
Lightly coat the inner diameter of the
wheel hub opening with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or rust
buildup.
{Warning
Do not apply grease to the wheel
mounting surface, wheel conical
seats, or the wheel nuts or bolts.
Grease applied to these areas could
cause a wheel to become loose or
come off, resulting in a crash.
When It Is Time for New Tires
Factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road
conditions affect the wear rate of the tires.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
320 Vehicle Care
Warning (Continued)
underinflated or flat. Have your dealer or
an authorized tire service center repair or
replace the flat tire as soon as possible.
{Warning
Lifting a vehicle and getting under it to
do maintenance or repairs is dangerous
without the appropriate safety equipment
and training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could be
badly injured or killed if the vehicle slips
off the jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire.
If a tire goes flat, avoid further tire and
wheel damage by driving slowly to a level
place, well off the road, if possible. Turn on
the hazard warning flashers. See Hazard
Warning Flashers 0135.
{Warning
Changing a tire can be dangerous. The
vehicle can slip off the jack and roll over
or fall causing injury or death. Find a
level place to change the tire. To help
prevent the vehicle from moving:
1. Set the parking brake firmly.
2. Put an automatic transmission in P (Park) or a manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do not restart while the vehicle is raised.
4. Do not allow passengers to remain in the vehicle.
5. Place wheel blocks, if equipped, on both sides of the tire at the opposite
corner of the tire being changed.
This vehicle may come with a jack and spare
tire or a tire sealant and compressor kit. To
use the jacking equipment to change a spare
tire safely, follow the instructions below.
Then see Tire Changing 0327. To use the
tire sealant and compressor kit, see Tire
Sealant and Compressor Kit 0321. When the vehicle has a flat tire (2), use the
following example as a guide to assist you
in the placement of wheel blocks (1),
if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains how to
repair or change a tire.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
Vehicle Care 327
Tire Changing
Removing the Spare Tire and Tools
To access the spare tire and tools:1. Open the liftgate. See Liftgate018.
2. Lift the load floor.
3. Remove the cargo management system.
See Cargo Management System 086.
4. Turn the wing nut (3) counterclockwise
to remove the jack (1) and wheel
wrench (2). Place the tool container near
the tire being changed.
5. Remove the spare tire and place it next to the tire being changed.
Removing the Flat Tire and Installing the
Spare Tire
1. Do a safety check before proceeding. SeeIf a Tire Goes Flat 0319.
2. Turn the wheel wrench counterclockwise
to loosen all the wheel nuts, but do not
remove them yet.
3. Place the jack near the flat tire.
Caution
Make sure that the jack lift head is in the
correct position or you may damage your
vehicle. The repairs would not be covered
by your warranty.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
368 Customer Information
J:View active recalls by Vehicle
Identification Number (VIN). See Vehicle
Identification Number (VIN) 0360.
H:Manage your profile and payment
information. View your GM Rewards Card
earnings and My GMC Rewards points.
F: Chat live with online help
representatives.
Visit my.gmc.com and create an account
today.
GMC Owner Centre (Canada)
mygmccanada.ca
Visit the GMC Owner Centre at
mygmccanada.ca (English) or
my.gmccanada.ca (French) to access similar
benefits to the U.S. site.
GM Mobility Reimbursement
Program
This program is available to qualified
applicants for cost reimbursement, up to
certain limits, of eligible aftermarket
adaptive equipment required for the vehicle,
such as hand controls or a wheelchair/
scooter lift for the vehicle.
To learn about the GM Mobility program,
see www.gmmobility.com or call the GM
Mobility Assistance Center at 1-800-323-9935.
Text Telephone (TTY) users, call
1-800-833-9935.
General Motors of Canada also has a
Mobility program. See www.gm.ca, or call
1-800-GM-DRIVE (800-463-7483) for details.
TTY users call 1-800-263-3830.
Roadside Assistance Program
For U.S.-purchased vehicles, call
1-888-881-3302; (Text Telephone (TTY):
1-888-889-2438).
For Canadian-purchased vehicles, call
1-800-268-6800.
Service is available 24 hours a day, 365 days
a year.
Calling for Assistance
When calling Roadside Assistance, have the
following information ready:
.Your name, home address, and home
telephone number
.Telephone number of your location
.Location of the vehicle
.Model, year, color, and license plate
number of the vehicle
.Odometer reading, Vehicle Identification
Number (VIN), and delivery date of the
vehicle
.Description of the problem
Coverage
Services are provided for the duration of the
vehicle's powertrain warranty.
In the U.S., anyone driving the vehicle is
covered. In Canada, a person driving the
vehicle without permission from the owner
is not covered.
Roadside Assistance is not a part of the New
Vehicle Limited Warranty. General Motors
North America and GMC reserve the right to
make any changes or discontinue the
Roadside Assistance program at any time
without notification.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-15170041) - 2022 - CRC - 10/6/21
Index 385
IndexA
Accessories and Modifications . . . . . . . . . . . 270
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Active Fuel Management . . . . . . . . . . . . . . . . 219
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . 232
Add-On Electrical Equipment . . . . . . . . . . . . . 268
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Additional Maintenance and Care . . . . . . . . 353
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 39
Agreements Trademarks and License . . . . . . . . . . . . . . . 183
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 278
Air Conditioning . . . . . . . . . . . . . . . . . . . . .192, 196
Air Filter
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Air Filter, Passenger Compartment . . . . . . . 197
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
How Does an Airbag Restrain? . . . . . . . . . . 59
Passenger Sensing System . . . . . . . . . . . . . . 60
What Makes an Airbag Inflate? . . . . . . . . . 59
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
When Should an Airbag Inflate? . . . . . . . . 58
Where Are the Airbags? . . . . . . . . . . . . . . . . 56 Airbags
Adding Equipment to the Vehicle . . . . . . . 64
Passenger Status Indicator . . . . . . . . . . . . . 107
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . 106
Servicing Airbag-Equipped Vehicles . . . . . . 64
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Alarm
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 25
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Rear Cross Traffic . . . . . . . . . . . . . . . . . . . . . . 245
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 251
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 301
All-Terrain Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 302
All-Wheel Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . 224
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 287
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Antilock Brake System (ABS) . . . . . . . . . . . . . 224
Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Apple CarPlay and Android Auto . . . . . . . . . . 172
Armrest Storage . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Assistance Program, Roadside . . . . . . . . . . . . 368

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-15170041) - 2022 - CRC - 10/6/21
Index 389
Fuel (cont'd)Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 256
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 256
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Low Fuel Warning Light . . . . . . . . . . . . . . . . 115
Management, Active . . . . . . . . . . . . . . . . . . . 219
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 255
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 255
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Fuses Engine Compartment Fuse Block . . . . . . . 293
Fuses and Circuit Breakers . . . . . . . . . . . . . 292
Instrument Panel Fuse Block . . . . . . . . . . . 296
Rear Compartment Fuse Block . . . . . . . . . 298
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . .128Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Gauges Engine Coolant Temperature . . . . . . . . . . . 105
Engine Oil Temperature . . . . . . . . . . . . . . . . 104
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 103
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Gauges (cont'd)
Warning Lights and Indicators . . . . . . . . . . 97
Gear Shifting Light . . . . . . . . . . . . . . . . . . . . . . . . 111
General Information Service and Maintenance . . . . . . . . . . . . . . 347
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Global Positioning System (GPS) . . . . . . . . . . 161
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Guidance
Problems with the Route . . . . . . . . . . . . . . 162
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 135
HD Radio Technology . . . . . . . . . . . . . . . . . . . . 146
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Head-up Display . . . . . . . . . . . . . . . . . . . . . . . . . 120
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 290
Daytime Running Lamps (DRL) . . . . . . . . . 134
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 115
High/Low Beam Changer . . . . . . . . . . . . . . 133 Headlamps (cont'd)
Lamps On Reminder . . . . . . . . . . . . . . . . . . . . 115
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 91
Heated and Ventilated Front Seats . . . . . . . 42
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192, 196
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . 115
High-Speed Operation . . . . . . . . . . . . . . . . . . . 308
Hill and Mountain Roads . . . . . . . . . . . . . . . . 207
Hill Descent Control (HDC) . . . . . . . . . . . . . . . 228
Hill Descent Control Light . . . . . . . . . . . . . . . . . 111
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 226
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
How to Wear Seat Belts Properly . . . . . . . . . 49
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192, 196
I
If the System Needs Service . . . . . . . . . . . . . 162
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . . 213
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . . 112
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 112