2021 GMC TERRAIN warning lights

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
36 Seats and Restraints
If equipped, the buttons are on the center
console. To operate, the engine must be
running.
Press
Ior+, if equipped, to heat the
driver or passenger seatback only.
Press
Jorzto heat the driver or
passenger cushion and seatback.
Press
Cor{, if equipped, to ventilate the
driver or passenger seat. A ventilated seat
has a fan that pulls air through the cushion
and seatback. The air is not cooled.
Press the button once for the highest
setting. With each press of the button, the
seat will change to the next lower setting,
and then to the off setting. The indicator
lights next to the buttons indicate three for
the highest setting and one for the lowest.
Remote Start Heated and Ventilated Seats
During a remote start, the heated or
ventilated seats, if equipped, can be turned
on automatically. When it is cold outside,
the heated seats turn on, and when it is hot
outside the ventilated seats turn on. The
heated or ventilated seats are canceled
when the ignition is turned on. Press the heated or ventilated seat button to use the
heated or ventilated seats after the vehicle
is started.
The heated or ventilated seat indicator lights
do not turn on during a remote start.
The temperature performance of an
unoccupied seat may be reduced. This is
normal.
The remote start heated or ventilated seats
may be enabled or disabled in the vehicle
personalization menu. See
Remote Vehicle
Start 013 and
Vehicle Personalization 0108.
Folding Seatback
The front passenger seatback folds flat.
{Warning
If you fold the seatback forward to carry
longer objects, such as skis, be sure any
such cargo is not near an airbag. In a
crash, an inflating airbag might force that
object toward a person. This could cause
severe injury or even death. Secure
objects away from the area in which an
airbag would inflate. For more
(Continued)
Warning (Continued)
information, seeWhere Are the Airbags?
0 48 and
Vehicle Load Limits 0196.
{Warning
Things you put on this seatback can
strike and injure people in a sudden stop
or turn, or in a crash. Remove or secure
all items before driving.
To fold the seatback: 1. Lower the head restraint all the way. See Head Restraints 029.
2. Move the seat as far back as possible. See Seat Adjustment 030.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
40 Seats and Restraints
Press the button once for the highest
setting. With each press of the button, the
heated seat will change to the next lower
setting, and then to the off setting. The
lights indicate three for the highest setting
and one for the lowest.
Seat Belts
This section describes how to use seat belts
properly, and some things not to do.
{Warning
Do not let anyone ride where a seat belt
cannot be worn properly. In a crash,
if you or your passenger(s) are not
wearing seat belts, injuries can be much
worse than if you are wearing seat belts.
You can be seriously injured or killed by
hitting things inside the vehicle harder or
by being ejected from the vehicle. In
addition, anyone who is not buckled up
can strike other passengers in the vehicle.
It is extremely dangerous to ride in a
cargo area, inside or outside of a vehicle.
In a collision, passengers riding in these
areas are more likely to be seriously(Continued)
Warning (Continued)
injured or killed. Do not allow passengers
to ride in any area of the vehicle that is
not equipped with seats and seat belts.
Always wear a seat belt, and check that
all passenger(s) are restrained
properly too.
This vehicle has indicators as a reminder to
buckle the seat belts. See Seat Belt
Reminders 091.
Why Seat Belts Work
When riding in a vehicle, you travel as fast
as the vehicle does. If the vehicle stops
suddenly, you keep going until something
stops you. It could be the windshield, the
instrument panel, or the seat belts!
When you wear a seat belt, you and the
vehicle slow down together. There is more
time to stop because you stop over a longer
distance and, when worn properly, your
strongest bones take the forces from the
seat belts. That is why wearing seat belts
makes such good sense.
Questions and Answers About Seat Belts
Q: Will I be trapped in the vehicle after a
crash if I am wearing a seat belt?
A: You could be— whether you are
wearing a seat belt or not. Your chance
of being conscious during and after a
crash, so you canunbuckle and get out,
is much greater if you are belted.
Q: If my vehicle has airbags, why should I have to wear seat belts?
A: Airbags are supplemental systems only.
They work withseat belts —not instead
of them. Whether or not an airbag is
provided, all occupants still have to
buckle up to get the most protection.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
78 Instruments and Controls
Instruments and Controls
Controls
Steering Wheel Adjustment . . . . . . . . . . . . 79
Steering Wheel Controls . . . . . . . . . . . . . . . . 79
Heated Steering Wheel . . . . . . . . . . . . . . . . . 79
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Windshield Wiper/Washer . . . . . . . . . . . . . . 79
Rear Window Wiper/Washer . . . . . . . . . . . 80
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . 82
Warning Lights, Gauges, and Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Instrument Cluster (Base and Midlevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Instrument Cluster (Uplevel) . . . . . . . . . . . . 88
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 90
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Engine Coolant Temperature Gauge . . . . 91
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 91
Airbag Readiness Light . . . . . . . . . . . . . . . . . 92
Passenger Airbag Status Indicator . . . . . . 92
Charging System Light . . . . . . . . . . . . . . . . . 93 Malfunction Indicator Lamp (Check
Engine Light) . . . . . . . . . . . . . . . . . . . . . . . . . 93
Brake System Warning Light . . . . . . . . . . . 95
Electric Parking Brake Light . . . . . . . . . . . . . 95
Service Electric Parking Brake Light . . . . . 95
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Tow/Haul Mode Light . . . . . . . . . . . . . . . . . . 96
Hill Descent Control Light . . . . . . . . . . . . . . 96
Lane Keep Assist (LKA) Light . . . . . . . . . . . 96
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . 97
Pedestrian Ahead Indicator . . . . . . . . . . . . . 97
Traction Off Light . . . . . . . . . . . . . . . . . . . . . . 97
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . 97
Traction Control System (TCS)/StabiliTrak Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . 98
Engine Oil Pressure Light . . . . . . . . . . . . . . . 98
Low Fuel Warning Light . . . . . . . . . . . . . . . . 99
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 99
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 99
Front Fog Lamp Light . . . . . . . . . . . . . . . . . 100
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 100
Cruise Control Light . . . . . . . . . . . . . . . . . . . 100
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . 100
Information Displays
Driver Information Center (DIC) (Base and Midlevel) . . . . . . . . . . . . . . . . . . . . . . . . 100
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . . . . . . 108
Engine Power Messages . . . . . . . . . . . . . . . 108
Vehicle Speed Messages . . . . . . . . . . . . . . . 108
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . . . . . . . 108
Universal Remote System
Universal Remote System . . . . . . . . . . . . . . 112
Universal Remote SystemProgramming . . . . . . . . . . . . . . . . . . . . . . . . . 113
Universal Remote System Operation . . . 115

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
84 Instruments and Controls
Software Acknowledgements
Certain Wireless Charging Module product
from LG Electronics, Inc. ("LGE") contains the
open source software detailed below. Refer
to the indicated open source licenses (as are
included following this notice) for the terms
and conditions of their use.
OSS Notice Information
To obtain the source code that is contained
in this product, please visit
http://opensource.lge.com. In addition to
the source code, all referred license terms,
warranty disclaimers and copyright notices
are available for download. LG Electronics
will also provide open source code to you
on CD-ROM for a charge covering the cost of
performing such distribution (such as the
cost of media, shipping, and handling) upon
email request to [email protected]. This
offer is valid for three (3) years from the
date on which you purchased the product.
Freescale-WCT library
Copyright (c) 2012-2014 Freescale
Semiconductor, Inc.. All rights reserved.
Redistribution and use in source and binary
forms, with or without modification, are
permitted provided that the following
conditions are met:1. Redistributions of source code must
retain the above copyright notice, this
list of conditions and the following
disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following
disclaimer in the documentation and/or
other materials provided with the
distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be
used to endorse or promote products
derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE
COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN
NO EVENT SHALL THE COPYRIGHT HOLDER
OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, 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.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 93
If the word ON, and the on symbol, are lit
on the passenger airbag status indicator, it
means that the front outboard passenger
frontal airbag is allowed to inflate.
If the word OFF, and the off symbol, are lit
on the passenger airbag status indicator, it
means that the passenger sensing system
has turned off the front outboard passenger
frontal airbag.
If, after several seconds, both status
indicator lights remain on, or if there are no
lights at all, there may be a problem with
the lights or the passenger sensing system.
See your dealer for service.
{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. SeeAirbag Readiness Light 092
for more information, including important
safety information.
Charging System Light
The charging system light comes on briefly
when the ignition is turned on, but the
engine is not running, as a check to show
the light is working. It should go out when
the engine is started.
If the light stays on, or comes on while
driving, there may be a problem with the
electrical charging system. Have it checked
by your dealer. Driving while this light is on
could drain the battery.
When this light comes on, or is flashing, the
Driver Information Center (DIC) also displays
a message.
If a short distance must be driven with the
light on, be sure to turn off all accessories,
such as the radio and air conditioner. Find a
safe place to stop the vehicle.
Malfunction Indicator Lamp
(Check Engine Light)
This light is part of the vehicle’s emission
control on-board diagnostic system. If this
light is on while the engine is running, a
malfunction has been detected and the
vehicle may require service. The light should
come on to show that it is working when
the ignition is in Service Mode. See Ignition
Positions 0199.
Malfunctions are often indicated by the
system before any problem is noticeable.
Being aware of the light and seeking service
promptly when it comes on may prevent
damage.
Caution
If the vehicle is driven continually with
this light on, the emission control system
may not work as well, the fuel economy
may be lower, and the vehicle may not
(Continued)

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
116 Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . . . . . . . . 116
Headlamp High/Low-Beam Changer . . . . 117
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Daytime Running Lamps (DRL) . . . . . . . . . 118
Automatic Headlamp System . . . . . . . . . . 118
Hazard Warning Flashers . . . . . . . . . . . . . . 119
Turn and Lane-Change Signals . . . . . . . . . 119
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . 120
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . 120
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Battery Load Management . . . . . . . . . . . . . 121
Battery Power Protection . . . . . . . . . . . . . . 122
Exterior Lighting Battery Saver . . . . . . . . . 122
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
instrument panel to the left of the steering
column.
There are four positions.
O: Turns the exterior lamps off and
deactivates the AUTO mode. Turn to
O
again to reactivate the AUTO mode.
In Canada, the headlamps will automatically
reactivate when the vehicle is shifted out of
P (Park). AUTO :
Turns the exterior lamps on and off
automatically depending on outside lighting.
;: Turns on the parking lamps including
all lamps, except the headlamps.
5: Turns on the headlamps together with
the parking lamps and instrument panel
lights.
IntelliBeam®System
If equipped, this system turns the vehicle's
high-beam headlamps on and off according
to surrounding traffic conditions.
The system turns the high-beam headlamps
on when it is dark enough and there is no
other traffic present.
This light
bcomes on in the instrument
cluster when the IntelliBeam system is
enabled.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
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Driving and Operating 199
Warning (Continued)
.Never stack heavier things, like
suitcases, inside the vehicle so
that some of them are above the
tops of the seats.
.Do not leave an unsecured child
restraint in the vehicle.
.Secure loose items in the vehicle.
.Do not leave a seat folded down
unless needed.
Starting and Operating
New Vehicle Break-In
Caution
The vehicle does not need an elaborate
break-in. But it will perform better in the
long run if you follow these guidelines:
.Do not drive at any one constant
speed, fast or slow, for the first
800 km (500 mi). Do not make
full-throttle starts. Avoid downshifting
to brake or slow the vehicle.
(Continued)
Caution (Continued)
.Avoid making hard stops for the first
300 km (200 mi) or so. During this
time the new brake linings are not yet
broken in. Hard stops with new linings
can mean premature wear and earlier
replacement. Follow this breaking-in
guideline every time you get new
brake linings.
Following break-in, engine speed and load
can be gradually increased.
Ignition Positions
The vehicle has an electronic keyless ignition
with pushbutton start. The Remote Keyless Entry (RKE) transmitter
must be in the vehicle for the system to
operate. If the pushbutton start is not
working, the vehicle may be near a strong
radio antenna signal causing interference to
the Keyless Access system. See
Remote
Keyless Entry (RKE) System Operation 07.
To shift out of P (Park), the engine must be
turned on, and the brake pedal must be
applied. See Shifting out of Park 0205.
Stopping the Engine/Off (No Indicator
Lights) : When the vehicle is stopped, press
ENGINE START/STOP once to turn the
engine off.
If the vehicle is in P (Park), the ignition will
turn off, and Retained Accessory Power
(RAP) will remain active. See Retained
Accessory Power (RAP) 0204.
If the vehicle is in R (Reverse), D (Drive) or
L (Low), the vehicle will shift to P (Park), the
ignition will turn off, and Retained Accessory
Power (RAP) will remain active. See Retained
Accessory Power (RAP) 0204.
If the vehicle is in N (Neutral), the ignition
will return to ACC/ACCESSORY and display
the message SHIFT TO PARK in the Driver

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
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Driving and Operating 243
LCA warning display will light up in the
corresponding outside mirror and will flash
if the turn signal is on.
{Warning
LCA does not alert the driver to vehicles
outside of the system detection zones,
pedestrians, bicyclists, or animals. It may
not provide alerts when changing lanes
under all driving conditions. Failure to use
proper care when changing lanes may
result in injury, death, or vehicle damage.
Before making a lane change, always
check mirrors, glance over your shoulder,
and use the turn signals.
LCA Detection Zones
1. SBZA Detection Zone
2. LCA Detection Zone
The LCA sensor covers a zone of
approximately one lane over from both
sides of the vehicle, or 3.5 m (11 ft). The
height of the zone is approximately between
0.5 m (1.5 ft) and 2 m (6 ft) off the ground.
The Side Blind Zone Alert (SBZA) warning
area starts at approximately the middle of
the vehicle and goes back 5 m (16 ft). Drivers
are also warned of vehicles rapidly
approaching from up to 70 m (230 ft) behind
the vehicle.
How the System Works
The LCA symbol lights up in the side mirrors
when the system detects a moving vehicle
in the next lane over that is in the side
blind zone or rapidly approaching that zone
from behind. A lit LCA symbol indicates it
may be unsafe to change lanes. Before
making a lane change, check the LCA
display, check mirrors, glance over your
shoulder, and use the turn signals.
Left Side Mirror DisplayRight Side Mirror Display When the vehicle is started, both outside
mirror LCA displays will briefly come on to
indicate the system is operating. When the
vehicle is in a forward gear, the left or right
side mirror display will light up if a moving
vehicle is detected in the next lane over in
that blind zone or rapidly approaching that
zone. If the turn signal is activated in the
same direction as a detected vehicle, this
display will flash as an extra warning not to
change lanes.
LCA can be disabled through vehicle
personalization. See
“Collision/Detection
Systems” underVehicle Personalization
0 108. If LCA is disabled by the driver, the
LCA mirror displays will not light up.
When the System Does Not Seem to
Work Properly
The LCA system requires some driving for
the system to calibrate to maximum
performance. This calibration may occur
more quickly if the vehicle is driving on a
straight highway road with traffic and
roadside objects (e.g., guardrails, barriers).
LCA displays may not come on when
passing a vehicle quickly, for a stopped
vehicle, or when towing a trailer. The LCA
detection zones that extend back from the