Engine start GMC TERRAIN 2018 Service Manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
198 Driving and Operating
speeds greater than 50 km/h
(30 mph) to clean the DPF
effectively.
If the vehicle is used for numerous
short trips or extended slow-speed
operation, the engine computer may
not be able to adequately heat up
the exhaust system to clean the
DPF effectively. The engine
computer has been designed to
continuously monitor the condition
of the DPF. When the engine
computer detects that the DPF is
nearly full of particulates and that
the vehicle is not being operated in
a manner that would allow effective
automatic DPF cleaning, a Driver
Information Center (DIC) message
will display. Start the cleaning
process as soon as possible.
Cleaning Process
To activate the cleaning process,
continue driving safely, and keep
vehicle speed above 50 km/h (30
mph) until the warning message in
the DIC turns off.If the vehicle continues to be driven
with the DPF warning message on,
and the exhaust filter is not cleaned
as required, the malfunction
indicator lamp and the ENGINE
POWER IS REDUCED message
will come on. Dealer service is
necessary.
See
Malfunction Indicator Lamp
(Check Engine Light) 0127.
{Warning
During DPF self cleaning or
during extended idling while
parked, the exhaust system and
exhaust gases are very hot.
Things that burn could touch hot
exhaust parts under the vehicle
and ignite. You or others could be
burned. Do not park, or idle for an
extended period of time, near or
over papers, leaves, dry grass,
or other things that can burn.
Keep the exhaust area clear of
material that could ignite or burn.
See Parking over Things That
Burn 0196 for more information.
Diesel Exhaust Fluid
{Warning
Diesel Exhaust Fluid (DEF) is
corrosive. Do not allow it to come
in contact with your skin, eyes,
or the finished surfaces of the
vehicle. If exposed, it may cause
skin and eye irritation. Wear skin
and eye protection when
handling. Inhalation may cause
irritation to the upper respiratory
tract. Store in a cool,
well-ventilated area. For more
safety and storage information,
see the label of the Diesel
Exhaust Fluid container.
DEF is used with diesel engines to
reduce the amount of regulated
emissions produced. The fluid level
in the DEF tank must be maintained
for the vehicle to run correctly. The
capacity of the DEF tank is 18.5 L
(4.9 gal).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
200 Driving and Operating
warning indication. If DEF is added
before the EXHAUST FLUID
EMPTY REFILL NOW message
appears, it may take several km/mi
for the DIC message to update.
If the vehicle speed has been
limited and DEF has been added, it
may take up to 30 seconds after
engine start with the vehicle
stopped for the EXHAUST FLUID
EMPTY REFILL NOW message to
clear. If the vehicle is driven prior to
the DIC message clearing, the
vehicle speed will still be limited.
If the DIC message clears while
driving, the speed limitation will be
removed gradually.
If DEF is added under freezing
conditions, additional time may be
required to remove speed limitations
and may require less fluid to fill the
DEF tank.
The following actions describe
strategies required by the U.S.
Environmental Protection Agency
(EPA) and the California Air
Resource Board (CARB). The DEF
messages relate to these strategies.The DIC message EXHAUST
FLUID RANGE: XXXX km (mi)
displays at approximately 1 600 km
(1,000 mi) of fluid range remaining.
This message appears again at
approximately 500 km (300 mi) of
remaining range before the exhaust
fluid tank becomes empty.
Below 500 km (300 mi) of range
remaining, these messages will
appear every time the vehicle is
started.
Below 121 km (75 mi) of range
remaining, the DIC message
EXHAUST FLUID LOW SPEED
LIMITED SOON displays. This
message will display every time the
vehicle is started.
If these warnings are ignored and
the DEF tank becomes empty, the
DIC message EXHAUST FLUID
EMPTY REFILL NOW - 563 KM
(350 MI) UNTIL 104 KM/H (65 MPH)
MAX SPEED displays. The
displayed mileage will decrease as
driving continues. A warning light
also comes on.
When the mileage countdown is
zero, the DIC message EXHAUST
FLUID EMPTY REFILL NOW -
TRANSITIONING TO 104 KM/H
(65 MPH) MAX SPEED displays.
A warning light and a chime also
come on. Vehicle speed will be
reduced to a maximum speed limit
of 104 km/h (65 mph).
After the transition to 104 km/h
(65 mph) is complete, the DIC
message EXHAUST FLUID EMPTY
REFILL NOW - SPEED LIMITED
TO 104 KM/H (65 MPH)
–120 KM
(75 MI) UNTIL 88 KM/H (55 MPH)
MAX SPEED displays. The
displayed mileage will decrease as
driving continues. A warning light
and a chime also come on.
When the mileage countdown is
zero, the DIC message EXHAUST
FLUID EMPTY REFILL NOW -
TRANSITIONING TO 88 KM/H
(55 MPH) MAX SPEED displays.
A flashing warning light and a chime
also come on. Vehicle speed will be
reduced to a maximum speed limit
of 88 km/h (55 mph).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
204 Driving and Operating
Automatic
Transmission
The shift switches are on the front
shift console. The selected gear
position will illuminate red on the
shift switch, while all others will be
displayed in white. If the shift is not
immediate, as in very cold
conditions, the indicator on the shift
switch may blink until it is fully
engaged.
The transmission does not operate
when the vehicle is off.If the vehicle is in ACC/
ACCESSORY, the transmission can
be shifted into P (Park).
If ENGINE START/STOP is pressed
twice while at a relatively high
speed, the engine will turn off and
the transmission will automatically
shift to N (Neutral). Once the vehicle
is stopped, P (Park) can be
selected.
P :
This position locks the drive
wheels. Use P (Park) when starting
the vehicle to ensure the vehicle
does not move.{Warning
It is dangerous to get out of the
vehicle if the transmission is not
in P (Park) with the parking brake
set. The vehicle can roll.
Do not leave the vehicle when the
engine is running. If the engine
has been left running, the vehicle
can move suddenly. You or others
could be injured. To be sure the
(Continued)
Warning (Continued)
vehicle will not move, even when
on fairly level ground, always set
the parking brake and place the
transmission into P (Park).
SeeShifting Into Park 0192 and
Driving Characteristics and
Towing Tips 0251.
This vehicle is equipped with an
electronic transmission. The
R (Reverse) and D (Drive) shift
switches are designed to prevent
inadvertent shifting out of P (Park)
unless the ignition is on, and the
brake pedal is applied.
For vehicles with a diesel engine,
the vehicle does not need to be on
to shift out of P (Park).
When the vehicle is stopped, press
ENGINE START/STOP to turn off
the vehicle. The transmission will
shift to P (Park) automatically.
The vehicle will not shift into
P (Park) if it is moving too fast. Stop
the vehicle and shift into P (Park).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 205
To shift in and out of P (Park), see
Shifting Into Park0192 andShifting
out of Park 0193.
R : Use this gear to back up.
If the vehicle is shifted from either
R (Reverse) to D (Drive),
or D (Drive) to R (Reverse) while the
speed is too high, the vehicle will
shift to N (Neutral). Reduce the
vehicle speed and try the shift
again.
To shift into R (Reverse): 1. Bring the vehicle to a complete stop.
2. Pull the R (Reverse) switch on the front shift console.
To shift out of R (Reverse):
1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.
At low vehicle speeds, R (Reverse)
can be used to rock the vehicle
back and forth to get out of snow,
ice, or sand without damaging the
transmission. See If the Vehicle Is
Stuck 0180. N :
In this position, the engine does
not connect with the wheels. To
restart the engine when the vehicle
is already moving, use
N (Neutral) only.
{Warning
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
You could lose control and hit
people or objects. Do not shift
into a drive gear while the engine
is running at high speed.
Caution
Shifting out of P (Park) or
N (Neutral) with the engine
running at high speed may
damage the transmission. The
repairs would not be covered by
(Continued)
Caution (Continued)
the vehicle warranty. Be sure the
engine is not running at high
speed when shifting the vehicle.
Caution
The vehicle is not designed to
stay in N (Neutral) for extended
periods of time. It will
automatically shift into P (Park).
To shift into N (Neutral), press the
N (Neutral) switch on the front shift
console until the N (Neutral)
indicator displays.
To shift out of N (Neutral): 1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 213
Ride Control Systems
Traction Control/
Electronic Stability
Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak, an
electronic stability control system.
These systems help limit wheel slip
and assist the driver in maintaining
control, especially on slippery road
conditions.
TCS activates if it senses that any
of the drive wheels are spinning or
beginning to lose traction. When this
happens, TCS applies the brakes to
the spinning wheels and reduces
engine power to limit wheel spin.
StabiliTrak activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak selectively applies
braking pressure to any one of thevehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path.
If cruise control is being used and
TCS or StabiliTrak begins to limit
wheel spin, cruise control will
disengage. Cruise control may be
turned back on when road
conditions allow.
Both systems come on
automatically when the vehicle is
started and begins to move. The
systems may be heard or felt while
they are operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary
to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow.
See
If the Vehicle Is Stuck 0180
and “Turning the Systems Off and
On” later in this section.
The indicator light for both systems
is in the instrument cluster. This
light will:
.
Flash when TCS is limiting
wheel spin
. Flash when StabiliTrak is
activated
. Turn on and stay on when either
system is not working
If either system fails to turn on or to
activate, a message displays in the
Driver Information Center (DIC), and
dcomes on and stays on to
indicate that the system is inactive
and is not assisting the driver in
maintaining control. The vehicle is
safe to drive, but driving should be
adjusted accordingly.
If
dcomes on and stays on:
1. Stop the vehicle.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
214 Driving and Operating
2. Turn the engine off and wait15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on
and stays on, the vehicle may need
more time to diagnose the problem.
If the condition persists, see your
dealer.
Turning the Systems Off and
On (Uplevel Cluster)
Caution
Do not repeatedly brake or
accelerate heavily when TCS is
off. The vehicle driveline could be
damaged.
At speeds of 56 km/h (35 mph) or
above, this ability to turn off or on is
disabled. TCS and StabiliTrak can be turned
off or on using the DIC controls as
follows:
Pressoto access the cluster
applications. Use
worxto scroll
through the list of available
applications.
Press
Vto select the Options
application, then press
pto enter
the Options menu. Use
worxto
scroll through items in the
Options menu. Press
Vto select the Traction and
Stability page, then press
pto
select Traction menu. Use
worx
to select Traction (TCS) or Stability
(StabiliTrak).
To turn TCS off, select Traction,
then press
V. The TCS icon on the
DIC will change from On to Off and
iilluminates in the instrument
cluster.
To turn TCS back on, select
Traction, then press
V. The TCS
icon on the DIC will change from Off
to On and
igoes out in the
instrument cluster. TCS cannot be
on when StabiliTrak is off.
To turn StabiliTrak off, select
Stability, then press
V. The
StabiliTrak icon on the DIC will
change from On to Off. If TCS was
on when StabiliTrak was turned off,
both will turn off and
iandg
illuminate.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 239
Caution (Continued)
.Aftermarket diesel fuel
additives, which contain
alcohols, organo-metallic
additives, or water
emulsifiers.
. Diesel fuel with sulfur
greater than 15 ppm.
. Diesel-biodiesel blends not
within the required
specification.
Some conditions, such as dirty fuel,
may decrease fuel filter life and a
CHANGE FUEL FILTER message
may come on in the Driver
Information Center (DIC).
What Fuel to Use in the
U.S. (Diesel)
Use of diesel fuel with ultra low
sulfur content (15 ppm, maximum) is
required. Look for service station
fuel dispensers with this label in
green:
The diesel fuel must meet ASTM
International specification D 975,
Grades No. 2-D or No. 1-D S15,
also known as Ultra Low Sulfur
Diesel. Contact a fuel supplier or
fueling station with any questions. Diesel Fuel Grades
For best results use No. 2-D diesel
fuel year-round because it is
blended for seasonal temperature
differences, both above and below
freezing conditions. No. 1-D diesel
also meeting ASTM International
D975 fuel can be used in very cold
temperatures (below
−18 °C or
0 °F); however, it will reduce power
and fuel economy. Avoid using No.
1-D diesel fuel in warm or hot
climates. It can result in stalling,
poor starting when the engine is hot,
and damage to the fuel injection
system.
Premium Diesel Fuel
Premium Diesel Fuel (FQP-1A)
corresponds to the Engine
Manufacturers Association (EMA)
Recommended Guideline. It may
provide less noise, better starting,
and better vehicle performance, but
is not required.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 241
Caution (Continued)
be covered by the vehicle
warranty. Do not use marine,
locomotive, or boiler distillate fuel
since it may contain higher sulfur
levels.
Diesel Fuel Types
For best results use Ultra Low
Sulfur Type B Diesel. This fuel is
blended for seasonal changes. In
extreme cold temperatures (below
−18 °C or 0 °F) Ultra Low Sulfur
Type A Diesel fuel can be used, but
it may cause power and fuel
economy losses. Avoid using Type
A Diesel fuel in warm or hot
climates. Doing so can result in
stalling, poor starting when the
engine is hot, and damage to the
fuel injection system.
Premium Diesel Fuel
If available, premium diesel fuel
(FQP-1A) corresponding to the
Engine Manufacturers Association (EMA) Recommended Guideline
could provide better starting and
vehicle performance with less noise.
Biodiesel Blends in Canada
Biodiesel blends that meet the CAN/
CGSB-3.522 specifications up to
20% (B20) can be used. Avoid the
use of biodiesel blends above 20%,
as they may damage the engine
and fuel system. For detailed
information on the use of biodiesel,
see
Biodiesel 0241.
What Fuel to Use in Mexico
Use diesel fuel specification
NOM-086 Pemex UBA, which meets
the Ultra Low Sulfur Diesel fuel
requirement of 15 ppm sulfur
maximum. This fuel is not available
in all regions of Mexico.
Caution
Use of diesel fuel other than Ultra
Low Sulfur Diesel (15 ppm sulfur
maximum) will cause damage to
the exhaust after-treatment
(Continued)
Caution (Continued)
system. This damage would not
be covered by the vehicle
warranty. Do not use marine,
locomotive, or boiler distillate fuel
since it may contain higher sulfur
levels.
Biodiesel
Biodiesel is a renewable fuel
produced from vegetable oils or
animal fats that have been
chemically modified to make it
compatible with diesel fuel.
Caution
Do not use home-made biodiesel
or home test kits because the
quality cannot be verified by
approved scientific methods. Do
not use raw vegetable oil or other
unmodified bio-oils, fats,
or blends of vegetable oil with
diesel. They could damage the(Continued)

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 243
freezing that may affect vehicle
starting. You may need to turn the
ignition on and off a few times
before the vehicle will start. Also,
idle the vehicle for a couple of
minutes before accelerating.
Water in Fuel (Diesel)
Improper fuel tank inspection or
cleaning, or contaminated fuel from
suppliers, can cause water to be
pumped into the fuel tank along with
the diesel fuel. If a WATER IN FUEL
- CONTACT SERVICE message
displays, the water must be drained
immediately.
{Warning
Diesel fuel containing water is still
combustible. You or others could
be burned. If the fuel needs to be
drained, keep sparks, flames, and
smoking materials away from the
mixture.
Caution
Water in the diesel fuel can
corrode internal components of
the fuel system and lead to
severe damage. It can also
support fungus or bacteria
growth, which can damage the
fuel system and fuel operated
heater (FOH) (if equipped). Even
with a diesel fuel biocide, the fuel
system may still need to be
cleaned. Your dealer can advise
of the appropriate solution.
If the fuel tank needs to be
purged to remove water, see your
dealer or a qualified technician.
Improper purging can damage the
fuel system and block the FOH.
As an added precaution, drain the
diesel fuel filter of residual water at
every engine oil change. If the
WATER IN FUEL - CONTACT
SERVICE message comes on
frequently, even after draining water
from the fuel filter, see your dealer. Water in Fuel Troubleshooting
If the WATER IN FUEL - CONTACT
SERVICE message comes on:
Problem Recommended
Action
Message
displays but
goes off during
the ignition
cycle. The fuel filter is
partially filled
with water. Drain
the water as
soon as
possible. See
"Removing
Water from the
Fuel Filter"
following.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-10664916) - 2018 - crc - 9/15/17
Driving and Operating 245
FWD Shown, AWD Similar
3. Turn the drain plug counterclockwise using a
suitable tool.
4. With the engine off, press and hold ENGINE START/STOP
without applying the brake for
five seconds to place the
vehicle in Service Mode. See
Ignition Positions 0186. Wait
approximately five seconds,
and then press ENGINE
START/STOP again to turn it
off. This operation will enhance
water flow out of the filter. The filter is drained as soon as
diesel fuel emerges from
the port.
5. Retighten the drain plug by turning it clockwise.
6. Properly dispose of the water contaminated fuel.
7. Start the engine and let it run for a few minutes. During the
draining process, air may have
entered the fuel system. If the
engine stalls, the fuel system
may need to be primed. See
“Fuel Priming” following.
Fuel Priming
For the fuel system to work properly,
air cannot be in the fuel lines. If air
gets in, the engine may not start
and the fuel lines will need to be
primed before operating the vehicle.
If air is present, the following may
have happened:
. The vehicle ran out of fuel.
. The fuel filter was removed.
. The fuel lines were removed or
disconnected. .
The fuel filter water drain valve
was opened while the engine
was running.
To prime the fuel lines: 1. With the engine off, press and hold ENGINE START/STOP
without applying the brake for
five seconds to place the
vehicle in Service Mode. See
Ignition Positions 0186. Wait
approximately five seconds
and press ENGINE START/
STOP again to turn it off. Do
this step three times or more
while the engine is off.
2. Press and hold ENGINE START/STOP while applying
the brake for a maximum of
40 seconds at a time, with
five seconds between attempts,
until the engine starts. If the
engine tries to run, but does
not run smoothly, increase the
rpm’s slightly by using the
accelerator pedal. This will help
force air through the system.
3. Repeat Step 2 if the engine stalls and will not restart.