2021 GMC ACADIA Auto stop

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
320 Vehicle Care
{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 0326. To use the
tire sealant and compressor kit, see Tire
Sealant and Compressor Kit 0320. 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.
Tire Sealant and Compressor Kit
{Warning
Idling a vehicle in an enclosed area with
poor ventilation is dangerous. Engine
exhaust may enter the vehicle. Engine
exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can
cause unconsciousness and even death.
(Continued)
Warning (Continued)
Never run the engine in an enclosed area
that has no fresh air ventilation. For more
information, seeEngine Exhaust0219.
{Warning
Overinflating a tire could cause the tire
to rupture and you or others could be
injured. Be sure to read and follow the
tire sealant and compressor kit
instructions and inflate the tire to its
recommended pressure. Do not exceed
the recommended pressure.
{Warning
Storing the tire sealant and compressor
kit or other equipment in the passenger
compartment of the vehicle could cause
injury. In a sudden stop or collision, loose
equipment could strike someone. Store
the tire sealant and compressor kit in its
original location.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Connected Services 381
PressQ, then ask the Advisor to download
directions to the vehicle’s navigation system,
if equipped. After the call ends, the
navigation screen will provide prompts to
begin driving directions. Routes that are sent
to the navigation screen can only be
canceled through the navigation system.
See www.onstar.com (U.S.) or www.onstar.ca
(Canada).
Connections
The following services help with staying
connected.
For coverage maps, see www.onstar.com
(U.S.) or www.onstar.ca (Canada).
Ensuring Security
.Change the default passwords for the
Wi-Fi hotspot and myGMC mobile
application. Make these passwords
different from each other and use a
combination of letters and numbers to
increase the security.
.Change the default name of the SSID
(Service Set Identifier). This is your
network’s name that is visible to other
wireless devices. Choose a unique name
and avoid family names or vehicle
descriptions. Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in Wi-Fi
hotspot that provides access to the Internet
and web content at 4G LTE speed. Up to
seven mobile devices can be connected.
A data plan is required. Use the in-vehicle
controls only when it is safe to do so.
1. To retrieve Wi-Fi hotspot information, press
=to open the OnStar app on the
infotainment display, then select Wi-Fi
Hotspot. On some vehicles, touch Wi-Fi
or Wi-Fi Settings on the screen.
2. The Wi-Fi settings will display the Wi-Fi hotspot name (SSID), password, and on
some vehicles, the connection type (no
Internet connection, 3G, 4G, 4G LTE), and
signal quality (poor, good, excellent). The
LTE icon shows connection to Wi-Fi. It is
possible that the icon may not illuminate
even though the vehicle has an active
connection.
3. To change the SSID or password, press
Qor call 1-888-4ONSTAR to connect
with an Advisor. On some vehicles, the
SSID and password can be changed in
the Wi-Fi Hotspot menu. After initial set-up, your vehicle’s Wi-Fi
hotspot will connect automatically to your
mobile devices. Manage data usage by
turning Wi-Fi on or off on your mobile
device, using the myGMC mobile app, or by
contacting an OnStar Advisor. On some
vehicles, Wi-Fi can also be managed from
the Wi-Fi Hotspot menu.
MyGMC Mobile App (If Available)
Download the myGMC mobile app to
compatible Apple and Android smartphones.
GMC users can access the following services
from a smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil life,
or tire pressure, if factory-equipped with
the Tire Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/off,
manage settings, and monitor data
consumption, if equipped.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-14608671) - 2021 - CRC - 10/26/20
384 Index
AudioBluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . . . . . . 215
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Emergency Braking (AEB) . . . . . . . . . . . . . . 247
Headlamp System . . . . . . . . . . . . . . . . . . . . . 133
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 279
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 223
Avoiding Untrusted Media Devices . . . . . . . .147
B
Battery Exterior Lighting Battery Saver . . . . . . . . . 137
Load Management . . . . . . . . . . . . . . . . . . . . . 136
Power Protection . . . . . . . . . . . . . . . . . . . . . . . 137
Battery - North America . . . . . . . . . . . . 288, 332
Blade Replacement, Wiper . . . . . . . . . . . . . . . 290
Bluetooth
Overview . . . . . . . . . . . . . . . . . . . . . . . . . 168, 169
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . 150
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . 224 Brake (cont'd)
System Warning Light . . . . . . . . . . . . . . . . . 108
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Automatic Emergency (AEB) . . . . . . . . . . . 247
Braking System Front Pedestrian (FPB) . . . . . . . . . . . . . . . . . 248
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . . 212
Bulb Replacement Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 292
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 292
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . . 315
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 268
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . 268, 288, 332, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . 359 Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 219
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 208
Cargo Management System . . . . . . . . . . . . . . . . . . . 85
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . 84
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Charging System Light . . . . . . . . . . . . . . . . . . . 107
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Child Restraints Infants and Young Children . . . . . . . . . . . . . 66
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78, 80
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 341