warning light GMC TERRAIN 2021 Owner's Guide

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 95
operation. SeeAdd-On Electrical Equipment
0 256. See your dealer if assistance is
needed.
The vehicle may not pass inspection if:
.The light is on when the engine is
running.
.The light does not come on when the
ignition is in Service Mode.
.Critical emission control systems have not
been completely diagnosed. If this
happens, the vehicle would not be ready
for inspection and might require
several days of routine driving before the
system is ready for inspection. This can
happen if the 12-volt battery has recently
been replaced or run down, or if the
vehicle has been recently serviced.
See your dealer if the vehicle will not pass
or cannot be made ready for the test.
Brake System Warning Light
MetricEnglish This light should come on briefly when the
vehicle is turned on. If it does not come on
then, have it fixed so it will be ready to
warn you if there is a problem.
If the light comes on and stays on at start
up, there is a brake problem. Have the brake
system inspected right away.
If the light comes on while driving, pull off
the road and stop carefully. The brake pedal
might be harder to push, or the brake pedal
may go closer to the floor. It could take
longer to stop. If the light is still on, have
the vehicle towed for service. See
Towing
the Vehicle 0318.
{Warning
The brake system might not be working
properly if the brake system warning
light is on. Driving with the brake system
warning light on can lead to a crash.
If the light is still on after the vehicle has
been pulled off the road and carefully
stopped, have the vehicle towed for
service.
Electric Parking Brake Light
MetricEnglish
This light comes on when the parking brake
is applied. If the light continues flashing
after the parking brake is released, or while
driving, there is a problem with the Electric
Parking Brake system. A message may also
display in the Driver Information
Center (DIC).
If the light does not come on, or remains
flashing, see your dealer.
Service Electric Parking Brake
Light

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
96 Instruments and Controls
This light should come on briefly when the
vehicle is turned on. If it does not come on,
have it fixed so it will be ready to warn if
there is a problem.
If this light stays on or comes on while
driving, there is a problem with the Electric
Parking Brake (EPB). Take the vehicle to a
dealer as soon as possible. In addition to the
parking brake, other safety functions that
utilize the EPB may also be degraded.
A message may also display in the Driver
Information Center (DIC). SeeElectric Parking
Brake 0212.
Antilock Brake System (ABS)
Warning Light
This warning light should come on briefly
when the vehicle is turned on. If the light
does not come on, have it fixed so it will be
ready to warn if there is a problem. If the light comes on while driving, safely
stop as soon as it is possible and turn off
the vehicle. Then turn on the vehicle again
to reset the system.
If the ABS warning light stays on, or comes
on again while driving, the vehicle needs
service. A chime may also sound when the
light stays on.
If the ABS warning light is the only light on,
the vehicle has regular brakes, but ABS is
not functioning.
If both the ABS warning light and the brake
system warning light are on, ABS is not
functioning and there is a problem with the
regular brakes. See your dealer for service.
See
Brake System Warning Light 095.
Tow/Haul Mode Light
For vehicles with the Tow/Haul Mode
feature, this light comes on when the Tow/
Haul Mode has been activated. See
Tow/Haul Mode 0211.
Hill Descent Control Light
If equipped, the Hill Descent Control light
comes on when the system is ready for use.
When the light flashes, the system is active.
See Hill Descent Control (HDC) 0217.
Lane Keep Assist (LKA) Light
After the vehicle is started, this light turns
off and stays off if LKA has not been turned
on or is unavailable.
If equipped, this light is white if LKA is
turned on, but not ready to assist. This light
is green if LKA is turned on and is ready to
assist.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 97
LKA may assist by gently turning the
steering wheel if the vehicle approaches a
detected lane marking. The LKA light is
amber when assisting.
This light flashes amber as a Lane Departure
Warning (LDW) alert, to indicate that the
lane marking has been crossed.
LKA will not assist or alert if the turn signal
is active in the direction of lane departure,
or if LKA detects that you are accelerating,
braking, or actively steering.
SeeLane Keep Assist (LKA) 0244.
Vehicle Ahead Indicator
If equipped, this indicator will display green
when a vehicle is detected ahead.
See Forward Collision Alert (FCA) System
0 237.
Pedestrian Ahead Indicator
If equipped, this indicator will display amber
when a nearby pedestrian is detected in
front of the vehicle.
See Front Pedestrian Braking (FPB) System
0 240.
Traction Off Light
This light comes on briefly while starting
the engine. If it does not, have the vehicle
serviced by your dealer. If the system is
working normally, the indicator light then
turns off. The traction off light comes on when the
Traction Control System (TCS) has been
turned off through the Driver Information
Center (DIC).
This light and the StabiliTrak/ESC OFF light
come on when StabiliTrak/Electronic Stability
Control (ESC) is turned off.
If the TCS is off, wheel speed will be limited
when necessary to protect the driveline
from damage. Adjust driving accordingly.
See
Traction Control/Electronic Stability
Control 0214.
StabiliTrak OFF Light
This light comes on briefly while starting
the vehicle. If it does not, have the vehicle
serviced by your dealer.
This light comes on when the StabiliTrak/
Electronic Stability Control (ESC) system is
turned off. If StabiliTrak/ESC is off, the
Traction Control System (TCS) is also off.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
98 Instruments and Controls
If the StabiliTrak/ESC and TCS are off, the
system does not assist in controlling the
vehicle. Turn on the TCS and the StabiliTrak/
ESC systems and the warning light turns off.
SeeTraction Control/Electronic Stability
Control 0214.
Traction Control System (TCS)/
StabiliTrak Light
This light comes on briefly when the vehicle
is turned on.
If the light does not come on, have the
vehicle serviced by your dealer. If the
system is working normally, the indicator
light turns off.
If the light is on and not flashing, the TCS
and potentially the StabiliTrak/ESC system
are not fully operational and may not assist
in maintaining control. Adjust driving
accordingly. If the condition persists, see your dealer as soon as possible. A Driver
Information Center (DIC) message may
display.
The light flashes when the TCS and/or the
StabiliTrak/ESC system is actively working.
See
Traction Control/Electronic Stability
Control 0214.
Tire Pressure Light
For vehicles with the Tire Pressure Monitor
System (TPMS), this light comes on briefly
when the engine is started. It provides
information about tire pressures and
the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires
are significantly underinflated.
A Driver Information Center (DIC) tire
pressure message may also display. Stop as
soon as possible, and inflate the tires to the pressure value shown on the Tire and
Loading Information label. See
Tire Pressure
0 293.
When the Light Flashes First and Then Is On
Steady
If the light flashes for about a minute and
then stays on, there may be a problem with
the TPMS. If the problem is not corrected,
the light will come on at every ignition
cycle. See Tire Pressure Monitor Operation
0 295.
Engine Oil Pressure Light
Caution
Lack of proper engine oil maintenance
can damage the engine. Driving with the
engine oil low can also damage the
engine. The repairs would not be covered
by the vehicle warranty. Check the oil
level as soon as possible. Add oil if
required, but if the oil level is within the
operating range and the oil pressure is
still low, have the vehicle serviced.
Always follow the maintenance schedule
for changing engine oil.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 99
This light should come on briefly as the
engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the light comes on and stays on, it means
that oil is not flowing through the engine
properly. The vehicle could be low on oil
and might have some other system
problem. See your dealer.
Low Fuel Warning Light
Base Level English Shown, Metric Similar
Uplevel
A Low Fuel Warning Light near the fuel
gauge comes on briefly when the ignition is
turned on as a check to show it is working.
It also comes on when the fuel gauge
indicator nears empty. The light turns off
when fuel is added. If it does not, have the
vehicle serviced.
Security Light
The security light should come on briefly as
the engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the system is working normally, the
indicator light turns off. If the light stays on and the engine does
not start, there could be a problem with the
theft-deterrent system. See
Immobilizer
Operation 023.
High-Beam On Light
This light comes on when the high-beam
headlamps are in use. See Headlamp High/
Low-Beam Changer 0117.
IntelliBeam Light
This light comes on when the IntelliBeam
system, if equipped, is enabled. See Exterior
Lamp Controls 0116.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
102 Instruments and Controls
Vehicle Information Menu (VEHICLE) Items
Units :Choose between Metric or US when
Units is active. Press
Vto confirm the
setting. This will change the displays on the
DIC to the type of measurements you select.
Speed Warning : This display is used to set
the vehicle speed at which the speed
warning chime sounds and the alert is
displayed. The speed can be set by pressing
Vwhile the speed warning display is
showing.
Remaining Oil Life : Displays an estimate of
the oil's remaining useful life. If REMAINING
OIL LIFE 99% is displayed, that means 99%
of the current oil life remains.
When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message will
appear on the display. The oil should be
changed as soon as possible. See Engine Oil
0 262. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0331.
The Oil Life display must be reset after each
oil change. Do not reset the Oil Life display
accidentally at any time other than when the oil has just been changed. It cannot be
reset accurately until the next oil change. To
reset, see
Engine Oil Life System 0264.
Oil Pressure : Oil pressure is displayed in
either kilopascal (kPa) or in pounds per
square inch (psi).
Tire Pressure : Displays a vehicle with the
approximate pressures of all four tires. Tire
pressure is displayed in either
kilopascal (kPa) or in pounds per square
inch (psi). See Tire Pressure Monitor System
0 294 and
Tire Pressure Monitor Operation 0295.
Battery Voltage : Displays the current
battery voltage, if equipped. Battery voltage
changes are normal while driving. See
Charging System Light 093. If there is a
problem with the battery charging system,
the DIC will display a message.
Coolant Temperature : Displays the coolant
temperature in degrees Celsius (°C) or
degrees Fahrenheit (°F).
TC/Stabilitrak : If equipped, press
Vto turn
on or off Traction Control or StabiliTrak/
Electronic Stability Control (ESC). ECO Drive Assist Menu (ECO) Items
Fuel Economy :
The center displays the
approximate instantaneous fuel economy as
a number and bar graph. Displayed above
the bar graph is a running average of fuel
economy for the most recently traveled
selected distance. Displayed below the bar
graph is the best average fuel economy that
has been achieved for the selected distance.
The selected distance is displayed at the top
of the page as “last xxx mi/km.” Press
Vto
select the distance or reset best value.
The display provides information on how
current driving behavior affects the running
average and how well recent driving
compares to the best that has been
achieved for the selected distance.
Economy Trend : Shows history of the
Average Fuel Economy from the last 50 km
(30 mi). Each bar represents about 5 km
(3 mi) of driving. During driving the bars will
shift to always reflect the most recent
distance on the right side. Press and hold
V
to clear the graph or pressVto reset
through the menu.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 105
engine speed, outside temperature, and oil
viscosity. On some models, the oil pump will
vary engine oil pressure according to engine
needs. Oil pressure may change quickly as
the engine speed or load varies. This is
normal. If the oil pressure warning light or
Driver Information Center (DIC) message
indicates oil pressure outside the normal
operating range, check the vehicle's oil as
soon as possible.
Driver Information Center (DIC)
(Uplevel)
The DIC displays are shown in the center of
the instrument cluster in the Info App.
SeeInstrument Cluster (Base and Midlevel)
0 85 or
Instrument Cluster (Uplevel) 088. The
displays show the status of many vehicle
systems.worx: Press to move up or down in
a list.
oorp: Press to move between the
interactive display zones in the cluster.
V: Press to open a menu or select a menu
item. Press and hold to reset values on
certain screens.
Info Page Options
The info pages on the DIC can be turned on
or off through the Options menu.
1. Press
oorpto scroll to the Options
application.
2. Press
worxto scroll to the Info Page
Options and press
V. 3. Press
worxto move through the list
of possible information displays.
4. Press
Vwhile an item is highlighted to
select or deselect that item. When an
item is selected, a checkmark will appear
next to it.
Info Pages
The following is the list of all possible DIC
info page displays. Some may not be
available for your particular vehicle. Some
items may not be turned on by default but
can be turned on through the Options app.
See “Info Page Options” earlier in this
section.
Speed : Shows the vehicle speed in either
kilometers per hour (km/h) or miles per
hour (mph). If equipped, press
Vto open
the menu and select to display speed limit
signs. The sign will show “− −”when there
is no detected speed limit or the system is
unavailable.
Speed Limit : Shows sign information, which
comes from a roadway database in the
onboard navigation, if equipped. The sign
will show “− −”when there is no detected
speed limit or the system is unavailable.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Instruments and Controls 107
selected distance. Displayed below the bar
graph is the best average fuel economy that
has been achieved for the selected distance.
The selected distance is displayed at the top
of the page as“last xxx mi/km.”
Press
Vto select the distance or reset best
value. Use
wandxto choose the
distance and press
V. Presswandxto
select “Reset Best Score.” Press
Vto reset
the best average fuel economy. After reset,
the best value displays “-,-”until the
selected distance has been traveled.
The display provides information on how
current driving behavior affects the running
average and how well recent driving
compares to the best that has been
achieved for the selected distance.
Average Speed : Displays the average
vehicle speed of the vehicle in kilometers
per hour (km/h) or miles per hour (mph).
This average is based on the various vehicle
speeds recorded since the last reset. Reset
the average speed by pressing
Vwhile this
display is active to show a confirmation
window to select yes or no and press
V. Timer :
This display can be used as a timer.
To start the timer, press
Vto open the
menu while this display is active. Use
w
andxto select Start Timer or Reset. Press
V. To stop the timer, pressVwhile this
display is active. The display will show the
amount of time that has passed since the
timer was last reset.
Follow Distance/Gap Setting : If equipped,
the current follow time to the vehicle ahead
is displayed as a time value on this page.
When Adaptive Cruise Control (ACC) has
been engaged, the display switches to the
gap setting page. This page shows the
current gap setting along with the vehicle
ahead indicator.
Driver Assistance : If equipped, shows
information for Lane Keep Assist (LKA), Lane
Departure Warning (LDW), and Forward
Collision Alert (FCA).
Battery Voltage : Displays the current
battery voltage, if equipped. Battery voltage
changes are normal while driving. See
Charging System Light 093. If there is a
problem with the battery charging system, a
DIC will display a message. Coolant Temperature :
Displays the coolant
temperature in degrees Celsius (°C) or
degrees Fahrenheit (°F).
Economy Trend : Shows history of the
Average Fuel Economy from the last 50 km
(30 mi). Each bar represents about 5 km
(3 mi) of driving. During driving the bars will
shift to always reflect the most recent
distance on the right side. Press
Vto open
the menu while this display is active to clear
the graph. Select yes or no and press
V.
Oil Pressure : Oil pressure is displayed in
either kilopascal (kPa) or in pounds per
square inch (psi). Oil pressure can vary with
engine speed, outside temperature, and oil
viscosity. On some models, the oil pump will
vary engine oil pressure according to engine
needs. Oil pressure may change quickly as
the engine speed or load varies. This is
normal. If the oil pressure warning light or
DIC message indicates oil pressure outside
the normal operating range, check the
vehicle's oil as soon as possible.

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/
Mexico-14420055) - 2021 - CRC - 11/13/20
Lighting 119
Hazard Warning Flashers
|:Press to make the front and rear turn
signal lamps flash on and off. This warns
others that you are having trouble.
Press
|again to turn the flashers off.
Turn and Lane-Change Signals
Move the lever all the way up or down to
signal a turn.
An arrow on the instrument cluster flashes
in the direction of the turn or lane change.
Raise or lower the lever until the arrow
starts to flash to signal a lane change. Hold
it there until the lane change is completed.
If the lever is briefly pressed and released,
the turn signal flashes three times.
The turn and lane-change signal can be
turned off manually by moving the lever
back to its original position.
If after signaling a turn or lane change, the
arrow flashes rapidly or does not come on, a
signal bulb may be burned out. Replace any burned out bulbs. If a bulb is
not burned out, check the fuse. See
Fuses
and Circuit Breakers 0280.
Fog Lamps
The ignition and parking lamps or
headlamps must be on for the front fog
lamps to work.
If equipped, the front fog lamps provide
extra illumination to the sides of the road
and improve visibility in fog or snow.
#:Press to turn the fog lamps on or off.
An indicator light on the instrument cluster
comes on when the fog lamps are on.
Some localities have laws that require the
headlamps to be on along with the fog
lamps.