2010 GMC TERRAIN check engine light

4-22 Instruments and Controls
The indicator/warning light flashes
while the StabiliTrak or TCS system
is working to control the vehicle on
a low traction surface.
If the TCS warning light comes on
and stays on while driving, the
vehicle needs service.
Check the Driver Information Center
(DIC) for applicable messages. See
Ride Control System Messages
on
page 4‑33for more information.
See Traction Control System (TCS)
on page 8‑41andStabiliTrak
Systemon page 8‑42for more
information.
Tire Pressure Light
For vehicles with a tire pressure
monitoring system, this light comes
on briefly when the engine is
started. It provides information
about tire pressures and the Tire
Pressure Monitoring System.
When the Light is On Steady
This indicates that one or more of
the tires are significantly
underinflated. A tire pressure message in the
Driver Information Center (DIC), can
accompany the light. See
Tire
Messages
on page 4‑35for more
information. Stop as soon as
possible, and inflate the tires to the
pressure value shown on the tire
loading information label. See Tire
Pressure
on page 9‑52for more
information.
When the Light Flashes First and
Then is On Steady
This indicates that there may be a
problem with the Tire Pressure
Monitor System. The light flashes
for about a minute and stays on
steady for the remainder of the
ignition cycle. This sequence
repeats with every ignition cycle.
See Tire Pressure Monitor
Operation
on page 9‑55for
more information.

Instruments and Controls 4-23
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule in this manual for
changing engine oil.
The oil pressure light should come
on briefly as the engine is started.
If it does not come on have the
vehicle serviced by your dealer/
retailer.
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/retailer.
Fuel Economy Light
For vehicles with the fuel economy
mode light, it comes on when the
eco (economy) switch, located on
the center console near the shifter,
is pressed. For vehicles with a
Driver Information Center (DIC) an
ECO Mode On message displays.
See Fuel System Messages
on
page 4‑32for more information.
Press the switch again to turn
off the light and exit the fuel
saver mode.

Driving and Operating 8-21
WARNING (Continued)
If the vehicle is stuck in the snow:
.Clear away snow from around
the base of your vehicle,
especially any that is blocking
the exhaust pipe.
.Check again from time to
time to be sure snow does
not collect there.
.Open a window about 5 cm
(two inches) on the side of
the vehicle that is away from
the wind to bring in fresh air.
.Fully open the air outlets on
or under the instrument
panel.
.Adjust the Climate Control
system to a setting that
circulates the air inside the
vehicle and set the fan speed
to the highest setting. See
Climate Control System in the
Index.(Continued)
WARNING (Continued)
For more information about
carbon monoxide, see Engine
Exhaust on page 8‑34.
Snow can trap exhaust gases
under your vehicle. This can
cause deadly CO (carbon
monoxide) gas to get inside. CO
could overcome you and kill you.
You cannot see it or smell it, so
you might not know it is in your
vehicle. Clear away snow from
around the base of your vehicle,
especially any that is blocking the
exhaust.
Run the engine for short periods
only as needed to keep warm, but
be careful. To save fuel, run the engine for only
short periods as needed to warm
the vehicle and then shut the engine
off and close the window most of
the way to save heat. Repeat this
until help arrives but only when you
feel really uncomfortable from the
cold. Moving about to keep warm
also helps.
If it takes some time for help to
arrive, now and then when you run
the engine, push the accelerator
pedal slightly so the engine runs
faster than the idle speed. This
keeps the battery charged to restart
the vehicle and to signal for help
with the headlamps. Do this as little
as possible to save fuel.

Driving and Operating 8-39
Brakes
Antilock Brake
System (ABS)
This vehicle has the Antilock Brake
System (ABS), an advanced
electronic braking system that helps
prevent a braking skid.
When the engine is started and the
vehicle begins to drive away, ABS
checks itself. A momentary motor or
clicking noise might be heard while
this test is going on, and it might
even be noticed that the brake
pedal moves a little. This is normal.
If there is a problem with ABS, this
warning light stays on. SeeAntilock
Brake System (ABS) Warning Light
on page 4‑20. If driving safely on a wet road and
it becomes necessary to slam on
the brakes and continue braking
to avoid a sudden obstacle, a
computer senses that the wheels
are slowing down. If one of the
wheels is about to stop rolling, the
computer will separately work the
brakes at each wheel.
ABS can change the brake pressure
to each wheel, as required, faster
than any driver could. This can help
the driver steer around the obstacle
while braking hard.
As the brakes are applied, the
computer keeps receiving updates
on wheel speed and controls
braking pressure accordingly.
Remember: ABS does not change
the time needed to get a foot up to
the brake pedal or always decrease
stopping distance. If you get too
close to the vehicle in front of you,
there will not be enough time to
apply the brakes if that vehicle
suddenly slows or stops. Always
leave enough room up ahead to
stop, even with ABS.
Using ABS
Do not pump the brakes. Just hold
the brake pedal down firmly and let
ABS work. The ABS pump or motor
might be heard operating, and the
brake pedal might be felt to pulsate,
but this is normal.
Braking in Emergencies
ABS allows the driver to steer and
brake at the same time. In many
emergencies, steering can help
more than even the very best
braking.

8-66 Driving and Operating
Trailer Sway
Control (TSC)
The vehicle has a Trailer Sway
Control (TSC) feature as part of the
StabiliTrak system. If TSC detects
that the trailer is swaying, the
vehicle's brakes are automatically
applied.
When TSC is applying the brakes,
the TCS/StabiliTrak indicator light
flashes to notify the driver to reduce
speed. SeeTraction Control System
(TCS)/StabiliTrak
®Lighton
page 4‑21. If the trailer continues to
sway, StabiliTrak will reduce engine
torque to help slow the vehicle.
TSC will not function if StabiliTrak is
turned off.
Conversions and
Add-Ons
Add-On Electrical
Equipment
Notice: Do not add anything
electrical to the vehicle unless
you check with your dealer/
retailer first. Some electrical
equipment can damage the
vehicle and the damage would
not be covered by the vehicle's
warranty. Some add-on electrical
equipment can keep other
components from working as
they should. Add-on equipment can drain the
vehicle battery, even if the vehicle is
not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing the Airbag-Equipped
Vehicleon page 2‑38and
Adding
Equipment to the Airbag-Equipped
Vehicle on page 2‑38.

9-20 Vehicle Care
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. SeeEngine Coolant
Temperature Gauge on page 4‑14.
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 12‑6.
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 fans are running. If the
engine is overheating, both fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
Notice: Engine damage from
running the engine without
coolant is not covered by the
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.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when your
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop your
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. In heavy traffic, let the engine idle in N (Neutral) while stopped.
If it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral) and let the
engine idle.

INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . . 9-3
Accessory Power . . . . . . . . . . . . . . 8-29
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 8-66
Adding Equipment to the
Airbag-Equipped Vehicle . . . . . 2-38
Adjustments Lumbar, Front Seats . . . . . . . . . . . 2-5
Air Cleaner/Filter, Engine . . . . . . 9-13
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 7-6
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 2-40
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 2-31
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 2-33
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 2-31
What Will You See After an Airbag Inflates? . . . . . . . . . . 2-32 Airbag System (cont.)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 2-29
Where Are the Airbags? . . . . . . 2-27
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 2-38
Passenger Status Indicator . . . 4-15
Readiness Light . . . . . . . . . . . . . . 4-15
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 2-38
System Check . . . . . . . . . . . . . . . . 2-25
Alarm System Anti-Theft . . . . . . . . . . . . . . . . . . . . . 1-13
All-Wheel Drive . . . . . . . . . . 8-38, 9-26
AM-FM Radio . . . . . . . . . . . . . . . . . . 6-11
Antenna Multi-Band . . . . . . . . . . . . . . . . . . . . 6-18
Anti-Theft Alarm System . . . . . . . . . . . . . . . . 1-13
Alarm System Messages . . . . . 4-34 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 8-39
Warning Light . . . . . . . . . . . . . . . . . 4-20
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 9-85
Interior . . . . . . . . . . . . . . . . . . . . . . . . 9-89
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 12-6
Audio Players . . . . . . . . . . . . . . . . . 6-18 CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Audio System
Radio Reception . . . . . . . . . . . . . . 6-17
Theft-Deterrent Feature . . . . . . . . 6-2
Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Automatic Transmission . . . . . . . 8-35
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Manual Mode . . . . . . . . . . . . . . . . . 8-37
Shiftlock Control SystemCheck . . . . . . . . . . . . . . . . . . . . . . . 9-27
Auxiliary Devices . . . . . . . . 6-27, 6-30

i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . 9-25Jump Starting . . . . . . . . . . . . . . . . . 9-78
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 4-29
Blade Replacement, Wiper . . . . 9-28
Bluetooth . . . . 6-41, 6-42, 6-45, 6-56
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . 9-23 Antilock . . . . . . . . . . . . . . . . . . . . . . . 8-39
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 8-40
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24
Parking . . . . . . . . . . . . . . . . . . . . . . . 8-40
System Messages . . . . . . . . . . . . 4-30
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Break-In, New Vehicle . . . . . . . . . 8-27
Bulb Replacement . . . . . . . . . . . . . 9-38 Fog Lamps . . . . . . . . . . . . . . 5-3, 9-34
Headlamp Aiming . . . . . . . . . . . . . 9-30
Headlamps . . . . . . . . . . . . . . . . . . . 9-32
Headlamps, Front TurnSignal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 9-33 Bulb Replacement (cont.)
License Plate Lamps . . . . . . . . . 9-37
Taillamps, Turn Signal,
Sidemarker, Stoplamps,
and Backup Lamps . . . . . . . . . . 9-34
Buying New Tires . . . . . . . . . . . . . . 9-60
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 4-9
California Fuel Requirements . . . . . . . . . . . 8-55
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . . 9-3
Warning . . . . . . . . . . . . . . . . . . . . . . . 9-3
Camera, Rear Vision . . . . . . . . . . 8-50
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 11-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 8-34
Liftgate . . . . . . . . . . . . . . . . . . . 1-8, 1-9
Winter Driving . . . . . . . . . . . . . . . . 8-20 Cargo
Tie Downs . . . . . . . . . . . . . . . . . . . . . 3-2
Cautions, Danger, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD DVD Player . . . . . . . . . . . . . . . . . . . 6-21
CD Player . . . . . . . . . . . . . . . . . . . . . 6-18
Center Console Storage . . . . . . . . 3-1
Chains, Tire . . . . . . . . . . . . . . . . . . . 9-66
Charging System Light . . . . . . . . 4-16
Check
Engine Lamp . . . . . . . . . . . . . . . . . 4-17
Ignition Transmission Lock . . . 9-27
Child Restraints Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . 2-43
Lower Anchors and Tethers for Children . . . . . . . . . 2-49
Older Children . . . . . . . . . . . . . . . . 2-41
Securing . . . . . . . . . . . . . . . . 2-56, 2-58
Systems . . . . . . . . . . . . . . . . . . . . . . 2-46
Where to Put the Restraint . . . 2-47