engine GMC TERRAIN 2023 Service Manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
172 Infotainment System
performance. iPhone are trademarks of
Apple Inc., registered in the U.S. and other
countries.
Trial length and service availability may vary
by model, model year or trim. Service will
automatically stop at the end of your trial
subscription period unless you decide to
continue service. If you do not wish to enjoy
your trial, you can cancel by calling the
number below. All SiriusXM services require
a subscription, each sold separately by
SiriusXM after the trial period. Service
subject to the applicable SiriusXM Customer
Agreement and Privacy Policy, visit
www.siriusxm.com (USA) or www.siriusxm.ca
(Canada) to see complete terms and how to
cancel which includes calling 1-866-635-2349
(USA) or 1-888-539-7474 (Canada). Some
services and features are subject to device
capabilities and location availability. Content
varies by SiriusXM subscription package. All
fees, content and features are subject to
change.SiriusXM with 360L: Some features,
including steaming content and listening
recommendations, require an active OnStar
Connected Access plan and may vary by
vehicle model. Content varies by SiriusXM
subscription plan. GM connected vehicle
services vary by vehicle model and require
active service plan, working electrical
system, cell reception and GPS signal. See
onstar.com for details and limitations.
SiriusXM, Pandora, Stitcher and all related
logos are trademarks of Sirius XM Radio Inc.
and its respective subsidiaries.
SiriusXM satellite service is only available in
the 48 contiguous United States (and Puerto
Rico with limited availability) and Canada.
In Canada: Some deterioration of service
may occur in extreme northern latitudes.
This is beyond the control of SiriusXM.
Explicit Language Notice: Channels with
frequent explicit language are indicated with
an
“XL” preceding the channel name.
Family-friendly packages are available by
contacting SiriusXM:
.USA Customers —See www.siriusxm.com
or call 1-888-601-6296.
.Canada Customers —See
www.siriusxm.ca or call 1-877-438-9677. It is prohibited to copy, decompile,
disassemble, reverse engineer, hack,
manipulate, or otherwise make available any
technology or software incorporated in
receivers compatible with the SiriusXM
Satellite Radio System or that support the
SiriusXM website, the Online Service or any
of its content.
General Requirements:
1. A License Agreement from SiriusXM is required for any product that
incorporates SiriusXM Technology and/or
for use of any of the SiriusXM marks to
be manufactured, distributed,
or marketed in the SiriusXM
Service Area.
2. For products to be distributed, marketed, and/or sold in Canada, a separate
agreement is required with Sirius XM
Canada Inc.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
174 Infotainment System
hand, and HERE North America, LLC (“HERE”)
and its licensors (including their licensors
and suppliers) on the other hand.
The Data for areas of Canada includes
information taken with permission from
Canadian authorities, including: © Her
Majesty the Queen in Right of Canada, ©
Queen's Printer for Ontario, © Canada Post
Corporation, GeoBase
®.
HERE holds a nonexclusive license from the
United States Postal Service
®to publish and
sell ZIP+4®information.
© United States Postal Service 2013. Prices
are not established, controlled, or approved
by the United States Postal Service. The
following trademarks and registrations are
owned by the USPS: United States Postal
Service, USPS, and ZIP+4.
TERMS AND CONDITIONS
Personal Use Only: You agree to use this
Data for the solely personal, noncommercial
purposes for which you were licensed, and
not for service bureau, timesharing or other
similar purposes. Except as otherwise set
forth herein, you agree not to otherwise
reproduce, copy, modify, decompile,
disassemble or reverse engineer any portion
of this Data, and may not transfer or distribute it in any form, for any purpose,
except to the extent permitted by
mandatory laws. You may transfer the Data
and all accompanying materials on a
permanent basis if you retain no copies and
the recipient agrees to the terms of this End
User License Agreement. Multi-disc sets may
only be transferred or sold as a complete
set as provided to you and not as a subset
thereof.
Restrictions
Except where you have been specifically
licensed to do so by HERE and without
limiting the preceding paragraph, you may
not (a) use this Data with any products,
systems, or applications installed or
otherwise connected to or in communication
with vehicles capable of vehicle navigation,
positioning, dispatch, real time route
guidance, fleet management or similar
applications; or (b) with, or in
communication with, including without
limitation, cellular phones, palmtop and
handheld computers, pagers, and personal
digital assistants or PDAs.
Warning
This Data may contain inaccurate or
incomplete information due to the passage
of time, changing circumstances, sourcesused, and the nature of collecting
comprehensive geographic data, any of
which may lead to incorrect results.
No Warranty
This Data is provided to you
“as is,”and you
agree to use it at your own risk. HERE and
its licensors (and their licensors and
suppliers) make no guarantees,
representations, or warranties of any kind,
express or implied, arising by law or
otherwise, including but not limited to,
content, quality, accuracy, completeness,
effectiveness, reliability, fitness for a
particular purpose, usefulness, use or results
to be obtained from this Data, or that the
Data or server will be uninterrupted or
error free.
Disclaimer of Warranty
THE DATABASE IS PROVIDED ON AN “AS IS”
AND “WITH ALL FAULTS BASIS” AND
HARMAN (AND THEIR LICENSORS AND
SUPPLIERS) EXPRESSLY DISCLAIM ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF
NON-INFRINGEMENT, MERCHANTABILITY,
SATISFACTORY QUALITY, ACCURACY, TITLE
AND FITNESS FOR A PARTICULAR PURPOSE.
NO ORAL OR WRITTEN ADVICE OR

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
176 Infotainment System
NAME:
HERE North America, LLC
CONTRACTOR (MANUFACTURER/SUPPLIER)
ADDRESS:
425 West Randolph Street, Chicago, IL
60606.
This Data is a commercial item as defined in
FAR 2.101 and is subject to the End User
License Agreement under which this Data
was provided.
© 2014 HERE North America, LLC. All rights
reserved.
If the Contracting Officer, federal
government agency, or any federal official
refuses to use the legend provided herein,
the Contracting Officer, federal government
agency, or any federal official must notify
HERE prior to seeking additional or
alternative rights in the Data.
Unicode
Copyright © 1991-2010 Unicode, Inc. All
rights reserved. Distributed under the Terms
of Use in https://www.unicode.org/
copyright.html.Free Type Project
Portions of this software are copyright ©
2010 The FreeType Project (https://
www.freetype.org). All rights reserved.
Open Source SW
Further information concerning the OSS
licenses is shown in the infotainment
display.
QNX
Portions of this software are copyright ©
2008-2011, QNX Software Systems. All rights
reserved.
Part C
–EULA
Copyright © 2011, Software Systems GmbH
& Co. KG. All Rights Reserved.
The product you have purchased ("Product")
contains Software (Runtime Configuration
No. 505962; "Software") which is distributed
by or on behalf of the Product manufacturer
"Manufacturer") under license from Software
Systems Co. ("QSSC"). You may only use the
Software in the Product and in compliance
with the license terms below.
Subject to the terms and conditions of this
License, QSSC hereby grants you a limited,
non-exclusive, non-transferable license to use the Software in the Product for the purpose
intended by the Manufacturer. If permitted
by the Manufacturer, or by applicable law,
you may make one backup copy of the
Software as part of the Product software.
QSSC and its licensors reserve all license+C31
rights not expressly granted herein, and
retain all right, title and interest in and to
all copies of the Software, including all
intellectual property rights therein. Unless
required by applicable law you may not
reproduce, distribute or transfer,
or de-compile, disassemble or otherwise
attempt to unbundle, reverse engineer,
modify or create derivative works of, the
Software. You agree: (1) not to remove,
cover or alter any proprietary notices, labels
or marks in or on the Software, and to
ensure that all copies bear any notice
contained on the original; and (2) not to
export the Product or the Software in
contravention of applicable export
control laws.
EXCEPT TO THE EXTENT OTHERWISE
REQUIRED BY APPLICABLE LAW, QSSC AND
ITS LICENSORS PROVIDE THE SOFTWARE ON
AN "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, EITHER EXPRESS
OR IMPLIED INCLUDING, WITHOUT
LIMITATION, ANY WARRANTIES OR

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
Driving and Operating 185
Driving and Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . . . . . . . . . . 186
Driving Environment . . . . . . . . . . . . . . . . . . . 186
Vehicle Design . . . . . . . . . . . . . . . . . . . . . . . . . 186
Driving for Better Fuel Economy . . . . . . . 187
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 187
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 187
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . 188
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 188
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 189
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 189
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 190
Driving on Wet Roads . . . . . . . . . . . . . . . . . 193
Hill and Mountain Roads . . . . . . . . . . . . . . 193
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 194
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 195
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 196
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 199
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 199
Starting the Engine . . . . . . . . . . . . . . . . . . . . 201
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 202
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 204
Retained Accessory Power (RAP) . . . . . . . 205Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 205
Shifting out of Park . . . . . . . . . . . . . . . . . . . 206
Parking over Things That Burn . . . . . . . . 206
Extended Parking . . . . . . . . . . . . . . . . . . . . . . 207
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 207
Running the Vehicle While Parked . . . . . 207
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 208
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 211
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . 211
Antilock Brake System (ABS) . . . . . . . . . . . 211
Electric Parking Brake . . . . . . . . . . . . . . . . . . 212
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . 213
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Hill Descent Control (HDC) . . . . . . . . . . . . . 217
Driver Mode Control . . . . . . . . . . . . . . . . . . . 218
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 220
Adaptive Cruise Control (Camera) . . . . . . 222
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 232
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 233
Surround Vision System . . . . . . . . . . . . . . . 234
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Automatic Parking Assist (APA) . . . . . . . . 237
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Assistance Systems for Driving . . . . . . . . 239
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 242
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Side Blind Zone Alert (SBZA) . . . . . . . . . . . 245
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 245
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . 247
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Recommended Fuel . . . . . . . . . . . . . . . . . . . 249
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 249
Fuels in Foreign Countries . . . . . . . . . . . . . 249
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 250
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . 250
Filling a Portable Fuel Container . . . . . . . 251

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
Driving and Operating 187
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, use Tour Mode. See
Driver Mode Control0218.
.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.
.Do not use a phone in demanding driving
situations. Use a hands-free method to
place or receive necessary phone calls.
.Watch the road. Do not read, take notes,
or look up information on phones or
other electronic devices.
.Designate a front seat passenger to
handle potential distractions.
.Become familiar with vehicle features
before driving, such as programming
favorite radio stations and adjusting
climate control and seat settings. Program
all trip information into any navigation
device prior to driving.
.Wait until the vehicle is parked to
retrieve items that have fallen to the
floor.
.Stop or park the vehicle to tend to
children.
.Keep pets in an appropriate carrier or
restraint.
.Avoid stressful conversations while
driving, whether with a passenger or on a
cell phone.
{Warning
Taking your eyes off the road too long or
too often could cause a crash resulting in
injury or death. Focus your attention on
driving.
Refer to the infotainment section for more
information on using that system and the
navigation system, if equipped, including
pairing and using a cell phone.
Defensive Driving
Defensive driving means “always expect the
unexpected.” The first step in driving
defensively is to wear the seat belt. See
Seat Belts 042.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
188 Driving and Operating
.Assume that other road users
(pedestrians, bicyclists, and other drivers)
are going to be careless and make
mistakes. Anticipate what they may do
and be ready.
.Allow enough following distance between
you and the driver in front of you.
.Focus on the task of driving.
Impaired Driving
Death and injury associated with impaired
driving is a global tragedy.
{Warning
Drinking alcohol or taking drugs and then
driving is very dangerous. Your reflexes,
perceptions, attentiveness, and judgment
can be affected by even a small amount
of alcohol or drugs. You can have a
serious—or even fatal —collision if you
drive after drinking or taking drugs.
Do not drive while under the influence of
alcohol or drugs, or ride with a driver
who has been drinking or is impaired by
drugs. Find alternate transportation
home; or if you are with a group,
designate a driver who will remain sober.
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
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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
Driving and Operating 191
.Do not park over things that burn. See
Parking over Things That Burn0206.
Driving on Hills
Driving safely on hills requires good
judgment and an understanding of what the
vehicle can and cannot do.
{Warning
Many hills are simply too steep for any
vehicle. Driving up hills can cause the
vehicle to stall. Driving down hills can
cause loss of control. Driving across hills
can cause a rollover. You could be injured
or killed. Do not drive on steep hills.
Before driving on a hill, assess the
steepness, traction, and obstructions. If the
terrain ahead cannot be seen, get out of the
vehicle and walk the hill before driving
further.
When driving on hills:
.Use a low gear and keep a firm grip on
the steering wheel.
.Maintain a slow speed.
.When possible, drive straight up or down
the hill.
.Slow down when approaching the top of
the hill.
.Use headlamps even during the day to
make the vehicle more visible.
{Warning
Driving to the top of a hill at high speed
can cause a crash. There could be a
drop-off, embankment, cliff, or even
another vehicle. You could be seriously
injured or killed. As you near the top of a
hill, slow down and stay alert.
.Never go downhill forward or backward
with the transmission in N (Neutral). The
brakes could overheat and you could lose
control.
.When driving down a hill, keep the
vehicle headed straight down. Use a low
gear because the engine will work with
the brakes to slow the vehicle and help
keep the vehicle under control.
{Warning
Heavy braking when going down a hill
can cause your brakes to overheat and
fade. This could cause loss of control and (Continued)
Warning (Continued)
you or others could be injured or killed.
Apply the brakes lightly when descending
a hill and use a low gear to keep vehicle
speed under control.
If the vehicle stalls on a hill: 1. Apply the brakes to stop the vehicle, and then apply the parking brake.
2. Shift into P (Park) and then restart the engine.
.If driving uphill when the vehicle
stalls, shift to R (Reverse), release the
parking brake, and back
straight down.
.Never try to turn the vehicle around.
If the hill is steep enough to stall the
vehicle, it is steep enough to cause it
to roll over.
.If you cannot make it up the hill,
back straight down the hill.
.Never back down a hill in N (Neutral)
using only the brake. The vehicle can
roll backward quickly and you could
lose control.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
Driving and Operating 193
If the standing water is not too deep, drive
through it slowly. At faster speeds, water
can get into the engine and cause it to stall.
Stalling can occur if the exhaust pipe is
under water. Do not turn off the ignition
when driving through water. If the exhaust
pipe is under water, the engine will not
start. When going through water, the brakes
get wet and it may take longer to stop. See
Driving on Wet Roads0193.
After Off-Road Driving
Remove any brush or debris that has
collected on the underbody or chassis,
or under the hood. These accumulations can
be a fire hazard.
After operation in mud or sand, have the
brake linings cleaned and checked. These
substances can cause glazing and uneven
braking. Check the body structure, steering,
suspension, wheels, tires, and exhaust
system for damage and check the fuel lines
and cooling system for any leakage.
More frequent maintenance service is
required. See the Maintenance Schedule
0 328.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop and
accelerate. Always drive slower in these
types of driving conditions and avoid driving
through large puddles and deep-standing or
flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick stop
and could cause pulling to one side. You
could lose control of the vehicle.
After driving through a large puddle of
water or a car/vehicle wash, lightly apply
the brake pedal until the brakes work
normally.
Flowing or rushing water creates strong
forces. Driving through flowing water
could cause the vehicle to be carried
away. If this happens, you and other
vehicle occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive through
flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can build
up under the vehicle's tires so they actually
ride on the water. This can happen if the
road is wet enough and you are going fast
enough. When the vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to slow
down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather
driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment in
good shape.
.Keep the windshield washer fluid reservoir
filled.
.Have good tires with proper tread depth.
See Tires 0290.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through mountains
is different than driving on flat or rolling
terrain. Tips include:

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
194 Driving and Operating
.Keep the vehicle serviced and in good
shape.
.Check all fluid levels and brakes, tires, and
cooling system.
.Shift to a lower gear when going down
steep or long hills.
{Warning
Using the brakes to slow the vehicle on a
long downhill slope can cause brake
overheating, can reduce brake
performance, and could result in a loss of
braking. Shift the transmission to a lower
gear to let the engine assist the brakes
on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral) or with
the ignition off is dangerous. This can
cause overheating of the brakes and loss
of steering assist. Always have the engine
running and the vehicle in gear.
.Drive at speeds that keep the vehicle in
its own lane. Do not swing wide or cross
the center line.
.Be alert on top of hills; something could
be in your lane (e.g., stalled car, crash).
.Pay attention to special road signs (e.g.,
falling rocks area, winding roads, long
grades, passing or no-passing zones) and
take appropriate action.
Winter Driving
Driving on Snow or IceCaution
To avoid damage to the wheels and
brake components, always clear snow and
ice from inside the wheels and
underneath the vehicle before driving.
Snow or ice between the tires and the road
creates less traction or grip, so drive
carefully. Wet ice can occur at about 0 °C
(32 °F) when freezing rain begins to fall.
Avoid driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating too quickly
causes the wheels to spin and makes the
surface under the tires slick.
.Turn on Traction Control. See Traction
Control/Electronic Stability Control 0214.
.The Antilock Brake System (ABS) improves
vehicle stability during hard stops, but
the brakes should be applied sooner than
when on dry pavement. See Antilock
Brake System (ABS) 0211.
.Allow greater following distance and
watch for slippery spots. Icy patches can
occur on otherwise clear roads in shaded
areas. The surface of a curve or an
overpass can remain icy when the
surrounding roads are clear. Avoid sudden
steering maneuvers and braking while
on ice.
.Turn off cruise control.
Cold Weather Mode
In very low temperatures, a cold weather
message may display on the Driver
Information Center (DIC). The engine speed,
transmission shift patterns, and cabin fan
speed may operate differently to enable the
vehicle to warm up quicker. You can
manually override the cabin fan speed in
cold weather mode.
Blizzard Conditions
Stop the vehicle in a safe place and signal
for help. Stay with the vehicle unless there
is help nearby. If possible, use Roadside

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16540740) - 2023 - CRC - 6/16/22
Driving and Operating 195
Assistance. SeeRoadside Assistance Program
0 342. To get help and keep everyone in the
vehicle safe:
.Turn on the hazard warning flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust under the
vehicle. This may cause exhaust gases to
get inside. Engine exhaust contains
carbon monoxide (CO), which cannot be
seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking the
exhaust pipe.
.Open a window about 5 cm (2 in) on
the vehicle side that is away from the
wind, to bring in fresh air.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to
circulate the air inside the vehicle and
set the fan speed to the highest
setting. See “Climate Control Systems.”
(Continued)
Warning (Continued)
For more information about CO, see
Engine Exhaust 0207.
To save fuel, run the engine for short
periods to warm the vehicle and then shut
the engine off and partially close the
window. Moving about to keep warm also
helps.
If it takes time for help to arrive, when
running the engine, push the accelerator
pedal slightly so the engine runs faster than
the idle speed. This keeps the battery
charged to restart the vehicle and to signal
for help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to
free the vehicle when stuck in sand, mud,
ice, or snow.
If stuck too severely for the traction system
to free the vehicle, turn the traction system
off and use the rocking method. See
Traction Control/Electronic Stability Control
0 214.
{Warning
If the vehicle's tires spin at high speed,
they can explode, and you or others
could be injured. The vehicle can
overheat, causing an engine compartment
fire or other damage. Spin the wheels as
little as possible and avoid going above
56 km/h (35 mph).
If equipped, select All-Wheel Drive (AWD)
Mode. See All-Wheel Drive 0211.
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right to
clear the area around the front wheels. Turn
off any traction system. Shift back and forth
between R (Reverse) and a low forward gear,
spinning the wheels as little as possible. To
prevent transmission wear, wait until the
wheels stop spinning before shifting gears.
Release the accelerator pedal while shifting,
and press lightly on the accelerator pedal
when the transmission is in gear. Slowly
spinning the wheels in the forward and
reverse directions causes a rocking motion
that could free the vehicle. If that does not
get the vehicle out after a few tries, it