2018 GMC TERRAIN warning light

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
130 Instruments and Controls
released, there is a brake problem.
Have the brake system inspected
immediately.
{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.
If the light comes on while driving, a
chime sounds. Pull off the road and
stop. The pedal might be harder to
push or go closer to the floor.
It might also take longer to stop.
If the light is still on, have the
vehicle towed for service. See
Towing the Vehicle 0337.
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
(Uplevel Only)
This light should come on briefly
when starting the vehicle. 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, take the vehicle
to your dealer as soon as possible.
See the information for the Electric
Parking Brake under Electric
Parking Brake 0210. A message
may also display in the Driver
Information Center (DIC).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Instruments and Controls 131
Antilock Brake System
(ABS) Warning Light
For vehicles with the Antilock Brake
System (ABS), this light comes on
briefly when the engine is started.
If the light does not come on, have it
fixed so it will be ready to warn if
there is a problem.
If the ABS light comes on and stays
on while driving, stop as soon as
possible and turn the ignition off.
Start the engine again to reset the
system. If the light stays on after
driving at a speed above 20 km/h
(13 mph), see your dealer for
service. A chime may also sound
when the light comes on steady.
If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes.
If the regular brake system warninglight is also on, the vehicle does not
have antilock brakes and there is a
problem with the regular brakes.
See
Brake System Warning Light
0 129.
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 0209.
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)
0 216.
Lane Keep Assist (LKA)
Light
If equipped, this light is green if LKA
is available to assist.
LKA may assist by gently turning
the steering wheel if the vehicle
approaches a detected lane marking
without using the turn signal in that
direction. The LKA light will turn
amber.
This light is amber and flashes as a
Lane Departure Warning (LDW)
alert, to indicate that the lane
marking has been crossed.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
132 Instruments and Controls
SeeLane Keep Assist (LKA) 0234.
Vehicle Ahead Indicator
If equipped, this indicator will
display green when a vehicle is
detected ahead.
See Forward Collision Alert (FCA)
System 0228.
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 OFF
light come on when StabiliTrak 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 0213.
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 system is turned off.
If StabiliTrak is off, the Traction
Control System (TCS) is also off.
If the StabiliTrak and TCS are off,
the system does not assist in
controlling the vehicle. Turn on the
TCS and the StabiliTrak systems
and the warning light turns off.
See Traction Control/Electronic
Stability Control 0213.
Traction Control System
(TCS)/StabiliTrak Light
This light comes on briefly when the
engine is started.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
134 Instruments and Controls
Caution (Continued)
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.
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
For the base level cluster, this light
comes on when the fuel tank is low
on fuel. The light turns off when fuel
is added. If it does not, have the
vehicle serviced.
For the uplevel cluster, this light is
near the fuel gauge and comes on
briefly when the ignition is turned on
as a check to show it is working.
It also comes on when the fuel tank
is low on fuel. The light turns off
when fuel is added. If it does not,
have the vehicle serviced.
Diesel Exhaust Fluid
(DEF) Warning Light
This light, a Driver Information
Center (DIC) Message, and a chime
come on when there is an issue with
the DEF.
If the DEF issue has not been
corrected, the light will continue to
flash. The vehicle's speed may also
be limited. SeeDiesel Exhaust Fluid
0 198.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Instruments and Controls 141
Press and holdVto clear the graph
or press
pto reset through
the menu.
Timer : This display can be used as
a timer. To start the timer, press
V
while this display is active. The
display will show the amount of time
that has passed since the timer was
last reset. To stop the timer, press
V
briefly while this display is active
and the timer is running. To reset
the timer to zero, press and hold
V
while this display is active, or presspand select reset.
Follow Distance : If equipped, the
current follow time to the vehicle
ahead is displayed as a time value
on this page.
Battery Voltage : Displays the
current battery voltage, if equipped.
Battery voltage changes are normal
while driving. See Charging System
Light 0127. 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).
Diesel Exhaust Fluid (DEF) Level
(Diesel Engine Only) : The DEF
level will be displayed as either OK,
XX%, or LOW. When LOW appears
on the display, add DEF as soon as
possible. See Diesel Exhaust Fluid
0 198.
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 Driver Information Center
(DIC) message indicates oil
pressure outside the normal
operating range, check the vehicle's
oil as soon as possible.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing
V. The messages that
require immediate action cannot be
cleared until that action is
performed.
All messages should be taken
seriously; clearing the message
does not correct the problem.
If a SERVICE message appears,
see your dealer.
Follow the instructions given in the
messages. The system displays
messages regarding the following
topics:
. Service Messages
. Fluid Levels
. Vehicle Security

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Lighting 151
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . 151
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . 153
Flash-to-Pass . . . . . . . . . . . . . . . . 153
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . 153
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 154
Hazard Warning Flashers . . . . . 154
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 155
Fog Lamps . . . . . . . . . . . . . . . . . . . 155
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . 156
Courtesy Lamps . . . . . . . . . . . . . . 156
Dome Lamps . . . . . . . . . . . . . . . . . 156
Reading Lamps . . . . . . . . . . . . . . 156
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . 157
Exit Lighting . . . . . . . . . . . . . . . . . . 157
Battery Load Management . . . 158
Battery Power Protection . . . . . 158
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 158Exterior 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
Oagain 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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
154 Lighting
When the DRL are on, the taillamps,
sidemarker lamps, instrument panel
lights, and other lamps will not be
on. The instrument cluster will be lit.
The DRL turn off when the
headlamps are turned to
Oor the
ignition is off. For vehicles first sold
in Canada, the DRL can only be
turned off when the vehicle is
parked.
The regular headlamp system
should be turned on when needed.
Automatic Headlamp
System
When the exterior lamp control is
set to AUTO and it is dark enough
outside, the headlamps come on
automatically.
There is a light sensor on top of the
instrument panel. Do not cover the
sensor; otherwise the headlamps
will come on when they are not
needed.
The system may also turn on the
headlamps when driving through a
parking garage or tunnel.
When it is bright enough outside,
the headlamps will turn off or may
change to Daytime Running
Lamps (DRL).
The automatic headlamp system
turns off when the exterior lamp
control is turned to
Oor the ignition
is off.
Lights On with Wipers
If the windshield wipers are
activated in daylight with the engine
on, and the exterior lamp control is
in AUTO, the headlamps, parking
lamps, and other exterior lamps
come on. The transition time for the
lamps coming on varies based on
wiper speed. When the wipers are
not operating, these lamps turn off.
Move the exterior lamp control to
O
or;to disable this feature.
Hazard Warning Flashers

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
176 Driving and Operating
{Warning
Heavy braking when going down
a hill can cause your brakes to
overheat and fade. This could
cause loss of control and 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.
. If driving downhill when the
vehicle stalls, shift to a
lower gear, release the
parking brake, and drive
straight down the hill.
3. If the vehicle cannot be restarted after stalling, set the
parking brake, shift into
P (Park), and turn the
vehicle off.
3.1. Leave the vehicle and
seek help. 3.2. Stay clear of the path the
vehicle would take if it
rolled downhill.
. Avoid turns that take the vehicle
across the incline of the hill.
A hill that can be driven straight
up or down might be too steep to
drive across. Driving across an
incline puts more weight on the
downhill wheels which could
cause a downhill slide or a
rollover.
. Surface conditions can be a
problem. Loose gravel, muddy
spots, or even wet grass can
cause the tires to slip sideways,
downhill. If the vehicle slips
sideways, it can hit something
that will trip it —a rock, a rut,
etc. —and roll over.
. Hidden obstacles can make the
steepness of the incline more
severe. If a rock is driven across
with the uphill wheels, or if the
downhill wheels drop into a rut
or depression, the vehicle can tilt
even more.