2020 GMC TERRAIN warning light

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
58 Seats and Restraints
{Warning
Do not bleach or dye seat belt
webbing. It may severely weaken
the webbing. In a crash, they
might not be able to provide
adequate protection. Clean and
rinse seat belt webbing only with
mild soap and lukewarm water.
Allow the webbing to dry.
Replacing Seat Belt
System Parts after a
Crash
{Warning
A crash can damage the seat belt
system in the vehicle. A damaged
seat belt system may not properly
protect the person using it,
resulting in serious injury or even
death in a crash. To help make
sure the seat belt systems are
working properly after a crash,(Continued)
Warning (Continued)
have them inspected and any
necessary replacements made as
soon as possible.
After a minor crash, replacement of
seat belts may not be necessary.
But the seat belt assemblies that
were used during any crash may
have been stressed or damaged.
See your dealer to have the seat
belt assemblies inspected or
replaced.
New parts and repairs may be
necessary even if the seat belt
system was not being used at the
time of the crash.
Have the seat belt pretensioners
checked if the vehicle has been in a
crash, or if the airbag readiness light
stays on after you start the vehicle
or while you are driving. See Airbag
Readiness Light 0113.
Airbag System
The vehicle has the following
airbags:
.
A frontal airbag for the driver
. A frontal airbag for the front
outboard passenger
. A seat-mounted side impact
airbag for the driver
. A seat-mounted side impact
airbag for the front outboard
passenger
. A roof-rail airbag for the driver
and the passenger seated
directly behind the driver
. A roof-rail airbag for the front
outboard passenger and the
passenger seated directly
behind the front outboard
passenger
All vehicle airbags have the word
AIRBAG on the trim or on a label
near the deployment opening.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
60 Seats and Restraints
{Warning
Children who are up against,
or very close to, any airbag when
it inflates can be seriously injured
or killed. Always secure children
properly in the vehicle. To read
how, seeOlder Children 070 or
Infants and Young Children 072.
There is an airbag readiness light
on the instrument cluster, which
shows the airbag symbol.
The system checks the airbag
electrical system for malfunctions.
The light tells you if there is an
electrical problem. See Airbag
Readiness Light 0113.
Where Are the Airbags?
The driver frontal airbag is in the
center of the steering wheel.
The front outboard passenger
frontal airbag is in the passenger
side instrument panel.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
64 Seats and Restraints
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the
fuel system after the airbags inflate.
The feature may also activate,
without airbag inflation, after an
event that exceeds a predetermined
threshold. After turning the ignition
off and then on again, the fuel
system will return to normal
operation; the doors can be locked,
the interior lamps can be turned off,
and the hazard warning flashers can
be turned off using the controls for
those features. If any of these
systems are damaged in the crash
they may not operate as normal.
{Warning
A crash severe enough to inflate
the airbags may have also
damaged important functions in
the vehicle, such as the fuel
system, brake and steering
systems, etc. Even if the vehicle
appears to be drivable after a(Continued)
Warning (Continued)
moderate crash, there may be
concealed damage that could
make it difficult to safely operate
the vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
. Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for the vehicle covers the need
to replace other parts. .
The vehicle has a crash sensing
and diagnostic module which
records information after a
crash. See Vehicle Data
Recording and Privacy 0397
and
Event Data Recorders 0397.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the front
outboard passenger position. The
passenger airbag status indicator
will light on the overhead console
when the vehicle is started.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
66 Seats and Restraints
.The system determines an infant
is present in a child restraint.
. A front outboard passenger
takes his/her weight off of the
seat for a period of time.
. There is a critical problem with
the airbag system or the
passenger sensing system.
When the passenger sensing
system has turned off the front
outboard passenger frontal airbag,
the OFF indicator will light and stay
lit as a reminder that the airbag is
off. See Passenger Airbag Status
Indicator 0114.
The passenger sensing system is
designed to turn on the front
outboard passenger frontal airbag
anytime the system senses that a
person of adult size is sitting
properly in the front outboard
passenger seat.
When the passenger sensing
system has allowed the airbag to be
enabled, the ON indicator will light
and stay lit as a reminder that the
airbag is active. For some children, including
children in child restraints, and for
very small adults, the passenger
sensing system may or may not turn
off the front outboard passenger
frontal airbag, depending upon the
person's seating posture and body
build. Everyone in the vehicle who
has outgrown child restraints should
wear a seat belt properly
—whether
or not there is an airbag for that
person.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. See Airbag Readiness
Light 0113 for more information,
including important safety
information.
If the On Indicator Is Lit for a
Child Restraint
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag if
the system determines that an infant
is present in a child restraint. If a
child restraint has been installed
and the ON indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions
provided by the child restraint
manufacturer and refer to
Securing Child Restraints (With
the Seat Belt in the Rear Seat)
085 or
Securing Child Restraints (With
the Seat Belt in the Front Seat)
0 87.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
70 Seats and Restraints
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light0113.
Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, see Where Are the
Airbags? 060. See your dealer
for service.
Replacing Airbag System
Parts after a Crash
{Warning
A crash can damage the airbag
systems in the vehicle.
A damaged airbag system may
not properly protect you and your
passenger(s) in a crash, resulting
in serious injury or even death. To
help make sure the airbag
systems are working properly
after a crash, have them
inspected and any necessary
replacements made as soon as
possible.
If an airbag inflates, you will need to
replace airbag system parts. See
your dealer for service.
If the airbag readiness light stays on
after the vehicle is started or comes
on when you are driving, the airbag
system may not work properly. Have
the vehicle serviced right away. See
Airbag Readiness Light 0113.
Child Restraints
Older Children
Older children who have outgrown
booster seats should wear the
vehicle’s seat belts.
The manufacturer instructions that
come with the booster seat state the
weight and height limitations for that
booster. Use a booster seat with a
lap-shoulder belt until the child
passes the fit test below:

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
94 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . 95
Steering Wheel Controls . . . . . . . 95
Heated Steering Wheel . . . . . . . . 95
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Windshield Wiper/Washer . . . . . . 95
Rear Window Wiper/Washer . . . 97
Compass . . . . . . . . . . . . . . . . . . . . . . 97
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Power Outlets . . . . . . . . . . . . . . . . . 98
Wireless Charging . . . . . . . . . . . . . 99
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . 102
Instrument Cluster (Base and Midlevel) . . . . . . . . . . . . . . . . . . . . 103
Instrument Cluster (Uplevel) . . . . . . . . . . . . . . . . . . . . 107
Speedometer . . . . . . . . . . . . . . . . . 110
Odometer . . . . . . . . . . . . . . . . . . . . . 110
Trip Odometer . . . . . . . . . . . . . . . . 110
Tachometer . . . . . . . . . . . . . . . . . . . 110
Fuel Gauge . . . . . . . . . . . . . . . . . . . 111 Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 112
Seat Belt Reminders . . . . . . . . . . 113
Airbag Readiness Light . . . . . . . 113
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 114
Charging System Light . . . . . . . 115
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 115
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 117
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 118
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 118
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 118
Tow/Haul Mode Light . . . . . . . . . 119
Hill Descent Control Light . . . . . 119
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 119
Vehicle Ahead Indicator . . . . . . . 119
Pedestrian Ahead Indicator . . . 120
Traction Off Light . . . . . . . . . . . . . 120
StabiliTrak OFF Light . . . . . . . . . 120
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . 120
Wait-to-Start Light . . . . . . . . . . . . 121
Tire Pressure Light . . . . . . . . . . . 121
Engine Oil Pressure Light . . . . 122 Low Fuel Warning Light . . . . . . 122
Diesel Exhaust Fluid (DEF)
Warning Light . . . . . . . . . . . . . . . 122
Security Light . . . . . . . . . . . . . . . . . 123
High-Beam On Light . . . . . . . . . . 123
Front Fog Lamp Light . . . . . . . . . 123
Lamps On Reminder . . . . . . . . . 123
Cruise Control Light . . . . . . . . . . 124
Door Ajar Light . . . . . . . . . . . . . . . 124
Information Displays
Driver Information Center (DIC) (Base and Midlevel) . . . . . . . . . 124
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . 130
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 134
Engine Power Messages . . . . . 134
Vehicle Speed Messages . . . . . 135
Vehicle Personalization
Vehicle Personalization . . . . . . . 135
Universal Remote System
Universal Remote System . . . . 140
Universal Remote SystemProgramming . . . . . . . . . . . . . . . 140
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . 143

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Instruments and Controls 99
The power outlet is on the rear of
the center console.
An indicator light on the outlet turns
on to show it is in use. The light
comes on when the ignition is on
and equipment requiring less than
150 watts is plugged into the outlet,
and no system fault is detected.
The indicator light does not come on
when the ignition is off or if the
equipment is not fully seated into
the outlet.
If equipment is connected using
more than 150 watts or a system
fault is detected, a protection circuit
shuts off the power supply and theindicator light turns off. To reset the
circuit, unplug the item and plug it
back in or turn the Retained
Accessory Power (RAP) off and
then back on. See
Retained
Accessory Power (RAP) 0187. The
power restarts when equipment
using 150 watts or less is plugged
into the outlet and a system fault is
not detected.
The power outlet is not designed for
the following and may not work
properly if they are plugged in:
. Equipment with high initial peak
wattage, such as
compressor-driven refrigerators
and electric power tools
. Other equipment requiring an
extremely stable power supply,
such as
microcomputer-controlled
electric blankets and touch
sensor lamps
. Medical equipment
Wireless Charging
If equipped, the vehicle has a
wireless charging pocket outside the
armrest of the center console. The
system operates at 145 kHz and
wirelessly charges one Qi
compatible smartphone. The power
output of the system is capable of
charging at a rate up to 3 amp
(19.5W), as requested by the
compatible smartphone. See Radio
Frequency Statement 0395.
{Warning
Wireless charging can affect the
operation of an implanted
pacemaker or other medical
devices. If you have one, it is
recommended to consult with
your doctor before using the
wireless charging system.
The vehicle must be on, in ACC/
ACCESSORY, or in Retained
Accessory Power (RAP). The
wireless charging feature may not

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
102 Instruments and Controls
OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Some warning lights come on briefly
when the engine is started to
indicate they are working. When
one of the warning lights comes on
and stays on while driving, or when
one of the gauges shows there may
be a problem, check the section that
explains what to do. Waiting to do
repairs can be costly and even
dangerous.