2015 GMC TERRAIN coolant temperature

Black plate (15,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
Vehicle Care 10-15
If there seems to be no leak, with
the engine on, check to see if the
electric engine cooling fan is
running. If the engine is
overheating, the fan should be
running. If it is not, the vehicle
needs service. Turn off the engine.
{Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL®engine
coolant. This coolant is designed to remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see
Engine Overheating on
page 10-18.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or others
(Continued)
Warning (Continued)
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
.Gives freezing protection down
to −37°C (−34°F), outside
temperature.
.Gives boiling protection up to
129°C (265°F), engine
temperature.
.Protects against rust and
corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.

Black plate (18,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
10-18 Vehicle Care
will allow any pressure still left to
be vented out the
discharge hose.
2. Keep turning the pressure cap slowly, and remove it.
3. Fill the coolant surge tank withthe proper DEX-COOL coolant
mixture, to the COLD FILL line. 4. With the coolant surge tank
pressure cap off, start the
engine and let it run until the
upper radiator hose can be felt
getting hot. Watch out for the
engine cooling fan(s).
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
DEX-COOL coolant mixture to
the coolant surge tank until the
level reaches the COLD
FILL line.
5. Replace the pressure cap. Be sure the pressure cap is
hand-tight.{Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured. Check the level in the coolant surge
tank when the cooling system has
cooled down. If the coolant is not at
the proper level, repeat Steps 1–
3 and reinstall the pressure cap.
If the coolant still is not at the proper
level when the system cools down
again, see your dealer.
Engine Overheating
The vehicle has an indicator to warn
of engine overheating. There is an
engine coolant temperature warning
light on the vehicle's instrument
panel. See
Engine Coolant
Temperature Gauge on page 5-9.
The decision may be made not to lift
the hood when this warning
appears, but instead get service
help right away. See Roadside
Assistance Program on page 13-5.
If the decision to lift the hood is
made, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fan(s) are running. If the
engine is overheating, the fan(s)

Black plate (19,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
Vehicle Care 10-19
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
{Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.(Continued)
Warning (Continued)
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows as
necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral) and let the
engine idle.
If the temperature overheat gauge is
no longer in the overheat zone or an
overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle distance from the vehicle in
front. If the warning does not come
back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.

Black plate (21,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
Vehicle Care 10-21
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. SeeEngine
Compartment Overview on
page 10-5 for reservoir location.
{Caution
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system
and paint.
(Continued)
Caution (Continued)
.Do not mix water with
ready-to-use washer fluid.
Water can cause the solution
to freeze and damage the
washer fluid tank and other
parts of the washer system.
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
.Fill the washer fluid tank only
three-quarters full when it is
very cold. This allows for fluid
expansion if freezing occurs,
which could damage the tank
if it is completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be heard all the time when the vehicle
is moving, except when applying the
brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
{Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.

Black plate (3,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
INDEX i-3
Compass . . . . . . . . . . . . . . . . . . . . . . . 5-4Messages . . . . . . . . . . . . . . . . . . . . 5-24
Connections OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-4
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 9-32
Control of a Vehicle . . . . . . . . . . . . . 9-3
Convenience Net . . . . . . . . . . . . . . . 4-2
Convex Mirrors . . . . . . . . . . . . . . . . 2-15
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . 10-15
Engine Temperature Gauge . . . 5-9
Cooling System . . . . . . . . . . . . . . . 10-14 Engine Messages . . . . . . . . . . . . 5-25
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . 13-8
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Cruise Control . . . . . . . . . . . . . . . . . 9-34
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Messages . . . . . . . . . . . . . . . . . . . . 5-25
Cupholders . . . . . . . . . . . . . . . . . . . . . 4-1 Customer Assistance . . . . . . . . . . 13-4
Offices . . . . . . . . . . . . . . . . . . . . . . . . 13-3
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 13-4
Customer Information Service PublicationsOrdering Information . . . . . . .13-11
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . 13-1
D
Damage Repair, Collision . . . . . . 13-9
Danger, Warnings, andCautions . . . . . . . . . . . . . . . . . . . . . . . . iv
Data Recorders, Event . . . . . . . 13-14
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 6-2
Defensive Driving . . . . . . . . . . . . . . . 9-3
Delayed Locking . . . . . . . . . . . . . . . . 2-8
Distracted Driving . . . . . . . . . . . . . . . 9-2
Dome Lamps . . . . . . . . . . . . . . . . . . . 6-4
Door Ajar Messages . . . . . . . . . . . . . . . 5-25
Delayed Locking . . . . . . . . . . . . . . . 2-8
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Power Locks . . . . . . . . . . . . . . . . . . . 2-7 Drive Belt Routing, Engine . . . . . 12-4
Drive Systems
All-Wheel Drive . . . . . . . 9-30, 10-24
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 5-20
Driving Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 9-51
Defensive . . . . . . . . . . . . . . . . . . . . . . 9-3
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
For Better Fuel Economy . . . . . 1-21
Hill and Mountain Roads . . . . . . 9-11
If the Vehicle is Stuck . . . . . . . . . 9-13
Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road . . . . . . . . . . . . . . . . . . . . . . 9-6
Off-Road Recovery . . . . . . . . . . . . 9-5
Vehicle Load Limits . . . . . . . . . . . 9-14
Wet Roads . . . . . . . . . . . . . . . . . . . 9-10
Winter . . . . . . . . . . . . . . . . . . . . . . . . 9-12

Black plate (4,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
i-4 INDEX
E
E85 or FlexFuel . . . . . . . . . . . . . . . 9-48
ECO Button . . . . . . . . . . . . . . . . . . . 9-29
Economy ModeFuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . . . 9-57
Electrical System Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-32
Fuses . . . . . . . . . . . . . . . . . . . . . . 10-32
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-35
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2
Engine
Air Cleaner/Filter . . . . . . . . . . . 10-12
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-12
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-15
Coolant Heater . . . . . . . . . . . . . . . 9-22
Coolant Temperature Gauge . . . 5-9
Cooling System . . . . . . . . . . . . . 10-14
Cooling System Messages . . . 5-25
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 10-8 Engine (cont'd)
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-25
Oil Life System . . . . . . . . . . . . . .10-11
Oil Messages . . . . . . . . . . . . . . . . . 5-26
Overheating . . . . . . . . . . . . . . . . 10-18
Power Messages . . . . . . . . . . . . . 5-26
Pressure Light . . . . . . . . . . . . . . . . 5-18
Running While Parked . . . . . . . . 9-26
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-21
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-5
Equipment, Towing . . . . . . . . . . . . 9-56
Event Data Recorders . . . . . . . . 13-14
Extender, Safety Belt . . . . . . . . . . 3-18
Exterior Lamp Controls . . . . . . . . . 6-1
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Filter,
Engine Air Cleaner . . . . . . . . . 10-12
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-58 Changing . . . . . . . . . . . . . . . . . . . 10-60 FlexFuel
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-48
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-81
Fluid Automatic Transmission . . . . 10-12
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-22
Power Steering . . . . . . . . . . . . . 10-20
Washer . . . . . . . . . . . . . . . . . . . . . 10-20
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 6-4 Bulb Replacement . . . . . . . . . . 10-28
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . 9-37
Forward Collision Alert (FCA) Warning Light . . . . . . . . . 5-16
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-46 Additives . . . . . . . . . . . . . . . . . . . . . 9-48
Economy Driving . . . . . . . . . . . . . 1-21
Economy Light . . . . . . . . . . . . . . . 5-18

Black plate (5,1)GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7707484) - 2015 - crc - 10/1/14
INDEX i-5
Fuel (cont'd)Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 9-50
Filling the Tank . . . . . . . . . . . . . . . 9-49
Foreign Countries . . . . . . . . . . . . 9-48
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Low Fuel Warning Light . . . . . . . 5-19
Requirements, California . . . . . 9-47
System Messages . . . . . . . . . . . . 5-27
Fuel Economy Mode . . . . . . . . . . . 9-29
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 10-32 Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-32
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-35
G
Garage Door Opener . . . . . . . . . . 5-37Programming . . . . . . . . . . . . . . . . . 5-37
Gauges
Engine CoolantTemperature . . . . . . . . . . . . . . . . . 5-9
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-8 Gauges (cont'd)
Speedometer . . . . . . . . . . . . . . . . . . 5-8
Tachometer . . . . . . . . . . . . . . . . . . . . 5-8
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . . 5-6
General Information Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-51
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-5
H
Halogen Bulbs . . . . . . . . . . . . . . . . 10-27
Hazard Warning Flashers . . . . . . . 6-3
Head Restraints . . . . . . . . . . . . . . . . 3-2
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . 10-27
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-2
Bulb Replacement . . . . . . . . . . 10-27
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . 6-2
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2 Headlamps (cont'd)
High-Beam On Light . . . . . . . . . . 5-19
High/Low Beam Changer . . . . . . 6-1
Lamps On Reminder . . . . . . . . . 5-20
Heated Front Seats . . . . . . . . . . . . . 3-8
Heated Mirrors . . . . . . . . . . . . . . . . . 2-16
Heater Engine Coolant . . . . . . . . . . . . . . . 9-22
Heating and Air
Conditioning . . . . . . . . . . . . . . . 8-1, 8-3
High-Beam On Light . . . . . . . . . . . 5-19
Hill and Mountain Roads . . . . . . . 9-11
Hill Start Assist (HSA) . . . . . . . . . 9-32
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . 3-12
I
Ignition Positions . . . . . . . . . . . . . . 9-19
Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 10-25
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-14
Indicator Vehicle Ahead . . . . . . . . . . . . . . . . 5-16