2020 GMC TERRAIN fuel

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Instruments and Controls 131
The sign will show“− −”when there
is no detected speed limit or the
system is unavailable.
Trip 1 or Trip 2 : Shows the current
distance traveled, in either
kilometers (km) or miles (mi), since
the trip odometer was last reset.
If equipped, shows the average fuel
economy since the last reset. This
number reflects only the
approximate average fuel economy
that the vehicle has right now, and
will change as driving conditions
change. The average fuel economy
can be displayed as mpg, km/L,
or L/100km where applicable.
If equipped, shows the average
speed since the last reset. This
number reflects only the
approximate average speed that the
vehicle has, and will change as
driving conditions change. Average
speed can be displayed as mph
or km/h where applicable. PressVwhile this display is active
to show a confirmation window to
reset all values to zero. Use
oorp
to select yes or no and pressV.
Fuel Information or Fuel Range :
Shows the approximate distance the
vehicle can be driven without
refueling. LOW will be displayed
when the vehicle is low on fuel. The
fuel range estimate is based on an
average of the vehicle's fuel
economy over recent driving history
and the amount of fuel remaining in
the fuel tank. If equipped, may also
show the instantaneous fuel
economy.
Oil Life : Shows 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 Oil0283.
In addition to the engine oil life system monitoring the oil life,
additional maintenance is
recommended in the Maintenance
Schedule. See
Maintenance
Schedule 0368.
The Oil Life display must be reset
after each oil change. It will not
reset itself. Do not reset the Oil Life
display at any time other than when
the oil has just been changed.
It cannot be reset accurately until
the next oil change. To reset the
engine oil life system, press
Vwhile
this display is active to show a
confirmation window. Use
oorpto
select yes or no and press
V. See
Engine Oil Life System 0287.
Fuel Filter Life Remaining (Diesel
Engine Only) : If equipped, an
estimate of the fuel filter's remaining
useful life is shown. If 90% Fuel
Filter Life Remaining is displayed, it
means 90% of the current fuel filter
life remains. The fuel filter life
system will alert when to change the
fuel filter on a schedule consistent
with your driving conditions.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
132 Instruments and Controls
When the remaining fuel filter life is
low, the CHANGE FUEL FILTER
message will appear on the display.
Change the fuel filter as soon as
possible.
The Fuel Filter Life display must be
reset after each Fuel Filter change.
It will not reset itself. Do not reset
the Fuel Filter Life display at any
time other than when the fuel filter
has just been changed. To reset the
Fuel Filter Life system press
V
while the display is active to show a
confirmation window to reset. Press
oorpto select yes or no and
press
V. See Fuel Filter
Replacement (Diesel) 0256.
Tire Pressure : Shows the
approximate pressures of all four
tires. Tire pressure is displayed in
either kilopascal (kPa) or in pounds
per square inch (psi). If the pressure
is low, the value for that tire is
shown in amber. See Tire Pressure
Monitor System 0323 and
Tire Pressure Monitor Operation
0 324. 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.
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. Use
wandxto
choose the distance and press
V. Press
wandxto 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.
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).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Instruments and Controls 133
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.
Timer : This display can be used as
a timer. To start the timer, press
V
to open the menu while this display
is active. Use
wandxto select
Start Timer or Reset. Press
V. To
stop the timer, press
Vwhile this
display is active. The display will
show the amount of time that has
passed since the timer was last
reset. 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.
Press
Vwhile this display is active
to toggle Speed Limit sign on or off.
Battery Voltage : Displays the
current battery voltage, if equipped.
Battery voltage changes are normal
while driving. See Charging System
Light 0115. If there is a problem
with the battery charging system, a
DIC will display a message.
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.
Coolant Temperature :
Displays
the coolant temperature in degrees
Celsius (°C) or degrees Fahrenheit
(°F).
Diesel Exhaust Fluid (DEF) Level
Percent (Diesel Engine Only) :
If equipped, 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
0 195.
Diesel Exhaust Fluid (DEF) Level
Gauge (Diesel Engine Only) :
If equipped, the DEF level displays
as a horizontal bar gauge with E or
0 and F or 1 at both ends. If more of
the bar is filled green, the vehicle
has a higher level of DEF. When the
estimated level is low, the gauge will
turn red and LOW will display above

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
156 Climate Controls
To find your comfort setting,
start with 22 °C (72 °F) and
allow the system time to
stabilize. Then adjust the
temperature as needed for best
comfort.
To improve fuel efficiency and to
cool the vehicle faster, recirculation
may be automatically selected in
warm weather.
The recirculation light will not come
on when automatically controlled.
Press
@to manually select
recirculation; press it again to select
outside air.
Do not cover the solar sensor on the
top of the instrument panel near the
windshield. This sensor regulates
air temperature based on sun load.
See “Sensor” later in this section.
Manual Operation
O:Press to turn the climate control
system on or off. When off, no air
will flow into the vehicle. Turning the
fan on, pressing any other button,
or turning a knob will turn the
system back on.
9: Turn clockwise or
counterclockwise to increase or
decrease the fan speed. Press the
knob to turn the fan off.
Press AUTO to return to automatic
operation.
Driver and Passenger
Temperature Control : The
temperature can be adjusted
separately for the driver and
passenger.
Turn the knob clockwise or
counterclockwise to increase or
decrease the driver or passenger
temperature setting.
SYNC : Press to link the passenger
temperature settings to the driver
setting. The SYNC indicator light will
turn on. When the passenger
temperature settings are adjusted,
the SYNC indicator light is off.
The driver side or passenger side
temperature display shows the
temperature setting increasing or
decreasing. Air Delivery Mode Control :
PressY,\,[, or-to change
the direction of the airflow. An
indicator light comes on in the
selected mode button.
Changing the mode cancels the
automatic operation and the system
goes into manual mode. Press
AUTO to return to automatic
operation.
Y: Air is directed to the instrument
panel outlets.
\: Air is divided between the
instrument panel and floor outlets.
[: Air is directed to the floor
outlets, with some to the windshield,
side window outlets, and second
row floor outlets.
-: This mode clears the windows
of fog or moisture. Air is directed to
the windshield, floor outlets, and
side window vents.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Driving and Operating 161
Driving and
Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . 162
Driving Environment . . . . . . . . . . 163
Vehicle Design . . . . . . . . . . . . . . . 163
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . 163
Distracted Driving . . . . . . . . . . . . 163
Defensive Driving . . . . . . . . . . . . . 164
Drunk Driving . . . . . . . . . . . . . . . . . 164
Control of a Vehicle . . . . . . . . . . . 165
Braking . . . . . . . . . . . . . . . . . . . . . . . 165
Steering . . . . . . . . . . . . . . . . . . . . . . 165
Off-Road Recovery . . . . . . . . . . . 166
Loss of Control . . . . . . . . . . . . . . . 167
Off-Road Driving . . . . . . . . . . . . . 167
Driving on Wet Roads . . . . . . . . 171
Hill and Mountain Roads . . . . . 172
Winter Driving . . . . . . . . . . . . . . . . 173
If the Vehicle Is Stuck . . . . . . . . 174
Vehicle Load Limits . . . . . . . . . . . 175
Starting and Operating
New Vehicle Break-In . . . . . . . . . 179
Ignition Positions . . . . . . . . . . . . . 179
Starting the Engine . . . . . . . . . . . 181 Stop/Start System . . . . . . . . . . . . 184
Winter Cover . . . . . . . . . . . . . . . . . 185
Engine Heater . . . . . . . . . . . . . . . . 186
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . 187
Shifting Into Park . . . . . . . . . . . . . 187
Shifting out of Park . . . . . . . . . . . 188
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 190
Extended Parking . . . . . . . . . . . . 190
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 191
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 192
Diesel Particulate Filter
Diesel Particulate Filter . . . . . . . 192
Diesel Exhaust Fluid
Diesel Exhaust Fluid . . . . . . . . . . 195
Automatic Transmission
Automatic Transmission . . . . . . 201
Manual Mode . . . . . . . . . . . . . . . . . 205
Tow/Haul Mode . . . . . . . . . . . . . . . 205
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . 206
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 206
Electric Parking Brake . . . . . . . . 207
Brake Assist . . . . . . . . . . . . . . . . . . 208
Hill Start Assist (HSA) . . . . . . . . 209
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 209
Hill Descent Control (HDC) . . . 213
Driver Mode Control . . . . . . . . . . 214
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 217
Adaptive Cruise Control . . . . . . 219
Driver Assistance Systems
Driver Assistance Systems . . . 230
Assistance Systems for Parking or Backing . . . . . . . . . . 231
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 237
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 237
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . 239
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . 241
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 243

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
162 Driving and Operating
Lane Change Alert (LCA) . . . . . 243
Lane Keep Assist (LKA) . . . . . . 245
Fuel
Top Tier Fuel (Gasoline) . . . . . . 248
Top Tier Fuel (Diesel) . . . . . . . . . 248
Recommended Fuel (LYX -1.5L L4 Turbo Engine) . . . . . . 248
Recommended Fuel (LTG - 2.0L L4 Turbo Engine) . . . . . . 249
Prohibited Fuels (Gasoline) . . . 249
Fuels in Foreign Countries . . . 249
Fuel Additives (Gasoline) . . . . . 250
Fuel Additives (Diesel) . . . . . . . 250
Fuel for Diesel Engines . . . . . . . 250
Biodiesel . . . . . . . . . . . . . . . . . . . . . 251
Cold Weather Operation (Diesel) . . . . . . . . . . . . . . . . . . . . . 252
Water in Fuel (Diesel) . . . . . . . . 252
Running Out of Fuel (Diesel) . . . . . . . . . . . . . . . . . . . . . 256
Fuel Filter Replacement (Diesel) . . . . . . . . . . . . . . . . . . . . . 256
Filling the Tank (Gasoline) . . . . 257
Filling the Tank (Diesel) . . . . . . . 258
Filling a Portable Fuel Container (Gasoline) . . . . . . . . 260
Filling a Portable Fuel Container (Diesel) . . . . . . . . . . . 261
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 262
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 262
Trailer Towing . . . . . . . . . . . . . . . . 266
Towing Equipment . . . . . . . . . . . . 269
Conversions and Add-Ons
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . 271
Driving Information
Driver Behavior
Driving is an important
responsibility. Driver behavior, the
driving environment, and the
vehicle's design all affect how well a
vehicle performs.
Being aware of these factors can
help in understanding how the
vehicle handles and what can be
done to avoid many types of
crashes, including a rollover crash.
Most serious injuries and fatalities to
unbelted occupants can be reduced
or prevented by the use of seat
belts. In a rollover crash, an
unbelted person is significantly
more likely to die than a person
wearing a seat belt. In addition,
avoiding excessive speed, sudden
or abrupt turns, and drunken or
aggressive driving can help make
trips safer and avoid the possibility
of a crash.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Driving and Operating 163
Driving Environment
Be prepared for driving in inclement
weather, at night, or during other
times where visibility or traction may
be limited, such as on curves,
slippery roads, or hilly terrain.
Unfamiliar surroundings can also
have hidden hazards.
Learn more about driving in different
conditions and off-road driving in
this section.
Vehicle Design
Utility vehicles have a significantly
higher rollover rate than other types
of vehicles. This is because they
have a higher ground clearance and
a narrower track or shorter
wheelbase than passenger cars,
which makes them more capable for
off-road driving. While these design
characteristics provide the driver
with a better view of the road, these
vehicles do have a higher center of
gravity than other types of vehicles.
A utility vehicle does not handle thesame as a vehicle with a lower
center of gravity, like a car, in similar
situations.
Safe driver behavior and
understanding of the environment
can help avoid a rollover crash in
any type of vehicle, including utility
vehicles.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible:
.
Set the climate controls to the
desired temperature after the
engine is started, or turn them
off when not required.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time. .
When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require.
. Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
. Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
168 Driving and Operating
{Warning
When driving off-road, bouncing
and quick changes in direction
can easily throw you out of
position. This could cause you to
lose control and crash. You and
your passengers should always
wear seat belts.
Before Driving Off-Road
.Have all necessary maintenance
and service work completed.
. Fuel the vehicle, fill fluid levels,
and check inflation pressure in
all tires, including the spare,
if equipped.
. Read all the information about
all-wheel-drive vehicles in this
manual.
. Make sure all underbody
shields, if equipped, are properly
attached.
. Know the local laws that apply to
off-road driving.
Loading the Vehicle for
Off-Road Driving
{Warning
.Unsecured cargo on the
load floor can be tossed
about when driving over
rough terrain. You or your
passengers can be struck
by flying objects. Secure the
cargo properly.
. Keep cargo in the cargo
area as far forward and as
low as possible. The
heaviest things should be
on the floor, forward of the
rear axle.
. Heavy loads on the roof
raise the vehicle's center of
gravity, making it more likely
to roll over. You can be
seriously or fatally injured if
the vehicle rolls over. Put
heavy loads inside the
cargo area, not on the roof. For more information about loading
the vehicle, see
Vehicle Load Limits
0 175.
Environmental Concerns
.
Always use established trails,
roads, and areas that have been
set aside for public off-road
recreational driving and obey all
posted regulations.
. Do not damage shrubs, flowers,
trees, or grasses or disturb
wildlife.
. Do not park over things that
burn. See Parking over Things
That Burn 0190.
Driving on Hills
Driving safely on hills requires good
judgment and an understanding of
what the vehicle can and cannot do.
{Warning
Many hills are simply too steep
for any vehicle. Driving up hills
can cause the vehicle to stall.
(Continued)