2018 GMC TERRAIN coolant

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Vehicle Care 281
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If No Steam Is Coming from
the Engine Compartment
If the engine coolant temperature
gauge is in the overheat zone or an
engine overheat DIC message 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 engine coolant temperature
gauge is in the overheat zone and
an overheat DIC message 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 engine coolant temperature
gauge is no longer in the overheat
zone or an overheat DIC message
no longer displays, the vehicle can
be driven. Continue to drive the
vehicle slowly for about 10 minutes.
Keep a safe distance from the
vehicle in front. If the engine coolant
temperature gauge does not go
back to the overheat zone or an
overheat DIC message does not
display, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the engine coolant temperature
gauge is still in the overheat zone or
an overheat DIC message still
displays, pull over, stop, and park
the vehicle right away. If overheat
messages appear repeatedly, see
your dealer.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the engine coolant
temperature gauge is still in the

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
282 Vehicle Care
overheat zone or an overheat DIC
message displays, turn off the
engine until it cools down.
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
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 0264 for
reservoir location.
Caution
. Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
. Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
. 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
(Continued)
Caution (Continued)
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 can
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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
296 Vehicle Care
RelaysUsage
K15 Rear window defogger
*K16 Horn
*K17 Selective catalytic reduction
*K18 Fog lamps
*K19 Coolant pump
*K20 –
*K21 Rear washer
*K22 Front washer
*K23 Wiper control
* PCB relays are not serviceable.Instrument Panel Fuse
Block
The instrument panel fuse block is
under the instrument panel on the
driver side.
To access the fuses, press and
release the latch near the top center
square.
Apply pressure to the two retaining
tabs on the sides of the cover, until
the two retaining tabs clear the
sides of the instrument panel. Allow
the panel to move downward and
out of the way. To reinstall the cover, reverse the
steps.
The vehicle may not be equipped
with all of the fuses and relays
shown.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Vehicle Care 305
(4) Construction Code:A letter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Service Description
:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width.
Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim. Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
0 307.
Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Service and Maintenance 353
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0269.
Once a Month
. Check the tire inflation
pressures. See Tire Pressure
0 307.
. Inspect the tires for wear. See
Tire Inspection 0313.
. Check the windshield washer
fluid level. See Washer Fluid
0 282.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the
engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil and filter must be changed at least once
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
See
Engine Oil Life System 0273.
On vehicles with diesel engines, it is
recommended to drain the diesel
fuel filter of water when the oil is
changed or when the WATER IN
FUEL CONTACT SERVICE
message displays.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0314.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and reset oil life system.
See
Engine Oil 0269 and
Engine Oil Life System 0273.
. Check engine coolant level. See
Cooling System 0276.
. Check windshield washer fluid
level. See Washer Fluid 0282.
. Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0341. Replace worn or
damaged wiper blades. See
Wiper Blade Replacement
0 286.
. Check tire inflation pressures.
See Tire Pressure 0307.
. Inspect tire wear. See Tire
Inspection 0313.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 274.
. Inspect brake system. See
Exterior Care 0341.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Service and Maintenance 361
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid.
Diesel Exhaust Aftertreatment System Diesel Exhaust Fluid (GM Part No. 19286291, in Canada 88865751) or diesel exhaust fluid that meets ISO 22241-1 or displays the API Diesel
Exhaust Fluid Certification Mark.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Cooling System 0276.
Engine Oil (Diesel) Engine oil meeting the dexos2 specification of the proper SAE viscosity
grade. ACDelco dexos2 is recommended. See Engine Oil0269.
Engine Oil (Gasoline) Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 269.
Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Canada 10953474).
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and
Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in
Canada 89021674) or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19299819).
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 88900401, in Canada 89021678).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Index 397
Climate Control Systems (cont'd)Heating . . . . . . . . . . . . . . . . . . . . . . . 160
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Cluster, Instrument . . . . . . . . . . . . . 119
Cold Weather Operation . . . . . . . . 242
Collision Damage Repair . . . . . . . 376
Compact Spare Tire . . . . . . . . . . . . 334
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 106
Compass . . . . . . . . . . . . . . . . . . . . . . . 113
Compressor Kit, Tire Sealant . . . 322
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 386
Control
Hill Descent . . . . . . . . . . . . . . . . . . 216
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 213
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 131
Control of a Vehicle . . . . . . . . . . . . . 171
Convenience Net . . . . . . . . . . . . . . . 108
Convex Mirrors . . . . . . . . . . . . . . . . . . 49
Coolant Engine Temperature Gauge . . 124
Cooling . . . . . . . . . . . . . . . . . . . . 160, 162
Cooling System . . . . . . . . . . . . . . . . . 276
Courtesy Lamps . . . . . . . . . . . . . . . . 156 Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 375
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 107
Cruise Control . . . . . . . . . . . . . . . . . . 220 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Cupholders . . . . . . . . . . . . . . . . . . . . . 106
Customer Assistance . . . . . . . . . . . 372
Offices . . . . . . . . . . . . . . . . . . . . . . . . 371
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 372
Customer Information Service PublicationsOrdering Information . . . . . . . . 378
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 369
D
Damage Repair, Collision . . . . . . . 376
Danger, Warning, and Caution . . . . 3
Data Collection
Infotainment System . . . . . . . . . . 382
OnStar . . . . . . . . . . . . . . . . . . . . . . . 382
Data Recorders, Event . . . . . . . . . 381
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 153
Defensive Driving . . . . . . . . . . . . . . . 171
Delayed Locking . . . . . . . . . . . . . . . . . 39 Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 388
Diesel Exhaust Fluid . . . . . . . . 27, 198
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . . 134
Diesel Particulate Filter . . . . . . . . . 197
Distracted Driving . . . . . . . . . . . . . . . 170
Dome Lamps . . . . . . . . . . . . . . . . . . . 156
Door Delayed Locking . . . . . . . . . . . . . . . . 39
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Power Locks . . . . . . . . . . . . . . . . . . . . 39
Drive Belt Routing, Engine . . . . . . 368
Drive Systems All-Wheel Drive . . . . . . . . . . 209, 285
Driver Assistance Systems . . . . . 222
Driver Behavior . . . . . . . . . . . . . . . . . 169
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 136
Driver Mode Control . . . . . . . . . . . . 216
Driving Assistance Systems . . . . . . . . . . 228
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 251
Defensive . . . . . . . . . . . . . . . . . . . . . 171
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 171
Environment . . . . . . . . . . . . . . . . . . 170
For Better Fuel Economy . . . . . . . 26

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
398 Index
Driving (cont'd)Hill and Mountain Roads . . . . . . 179
If the Vehicle is Stuck . . . . . . . . . 180
Loss of Control . . . . . . . . . . . . . . . 173
Off-Road . . . . . . . . . . . . . . . . . . . . . 174
Off-Road Recovery . . . . . . . . . . . 173
Vehicle Load Limits . . . . . . . . . . . 181
Wet Roads . . . . . . . . . . . . . . . . . . . 178
Winter . . . . . . . . . . . . . . . . . . . . . . . . 179
Driving the Vehicle . . . . . . . . . . . . . . . . 2
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 162
E
Electric Parking Brake . . . . . . . . . . 210
Electric Parking Brake Light . . . . 130
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 257
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 293
Fuses and Circuit Breakers . . . 292
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 296
Overload . . . . . . . . . . . . . . . . . . . . . 292
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 298 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 384
Engine Air Cleaner/Filter . . . . . . . . . . . . . 274
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 127
Compartment Overview . . . . . . . 264
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 124
Cooling System . . . . . . . . . . . . . . . 276
Drive Belt Routing . . . . . . . . . . . . 368
Exhaust . . . . . . . . . . . . . . . . . . . . . . 196
Heater . . . . . . . . . . . . . . . . . . . . . . . . 191
Oil Life System . . . . . . . . . . . . . . . 273
Oil Pressure Light . . . . . . . . . . . . 133
Overheating . . . . . . . . . . . . . . . . . . 280
Power Messages . . . . . . . . . . . . . 142
Running While Parked . . . . . . . . 197
Starting . . . . . . . . . . . . . . . . . . . . . . . 188
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . 238
Entry Lighting . . . . . . . . . . . . . . . . . . . 157
Equipment, Towing . . . . . . . . . . . . . 256
Event Data Recorders . . . . . . . . . . 381
Exhaust Fluid Diesel . . . . . . . . . . . . . . . . . . . . . . . . 198
Exit Lighting . . . . . . . . . . . . . . . . . . . . 157
Extended Parking . . . . . . . . . . . . . . . 196 Extender, Seat Belt . . . . . . . . . . . . . . 74
Exterior Lamp Controls . . . . . . . . . 151
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 158
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Replacement (Fuel) . . . . . . . . . . . 246
Filter, Engine Air Cleaner . . . . . . . . . . . 274
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 153
Flashers, Hazard Warning . . . . . . 154
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 320 Changing . . . . . . . . . . . . . . . . . . . . . 329
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 349
Fluid
Automatic Transmission . . . . . . 274
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 283
Diesel Exhaust . . . . . . . . . . . . . . . . . 27
Washer . . . . . . . . . . . . . . . . . . . . . . . 282
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 155
Folding Mirrors . . . . . . . . . . . . . . . . . . 49
Folding Seatback . . . . . . . . . . . . . . . . 64
Forward Automatic Braking . . . . . 231
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 228