2010 GMC ACADIA stop start

1-20 In Brief
3. If the vehicle has DriverInformation Center (DIC)
buttons: Press and hold the set/
reset button until 100% is
displayed. Three chimes sound
and the CHANGE ENGINE OIL
SOON message goes off.
If the vehicle does not have
Driver Information Center (DIC)
buttons: Press and hold the trip
odometer reset stem until OIL
LIFE REMAINING shows 100%.
Three chimes sound and the
CHANGE ENGINE OIL SOON
message goes off.
4. Turn the key to LOCK/OFF.
See Engine Oil Life System
on
page 10‑10.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.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, if equipped.
.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.
Roadside Assistance
Program
U.S.: 1-800-GMC-8782 (462-8782)
TTY Users: 1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new GMC, you
are automatically enrolled in the
Roadside Assistance program. This
program provides technically trained
advisors who are available 24 hours
a day, 365 days a year, minor repair
information or towing arrangements.
Roadside Assistance and OnStar
If you have a current OnStar
subscription, press the OnStar
button and the current GPS location
will be sent to an OnStar Advisor
who will assess your problem,

Keys, Doors and Windows 2-13
Vehicle Security
Vehicle theft is big business,
especially in some cities. This
vehicle has theft-deterrent features,
however, they do not make it
impossible to steal.
Anti-Theft Alarm System
On vehicles with an anti-theft alarm
system, to activate the system:
.PressQon the Remote Keyless
Entry (RKE) transmitter or the
power door lock switch when
any door is open.
The security light flashes.
When the door is closed, the
security light stops flashing and
stays on solid for approximately 30 seconds. The content theft
deterrent alarm is not armed
until the security light goes off.
If the delayed locking feature is
active, the alarm is not activated
until all doors are closed and the
security light goes off.
.PressQwhen the driver door is
closed. The security light comes
on solid for approximately
30 seconds and then goes off.
The content theft deterrent alarm
is not armed until the security
light goes off.
The theft-deterrent system will not
activate if the doors are locked with
the vehicle's key or the manual
door lock.
If a locked door is opened without
using the RKE transmitter, a ten
second pre-alarm occurs. The horn
chirps and the lights flash. If the key
is not placed in the ignition and
turned to START or the door is not
unlocked by pressing
Qduring the
ten second pre-alarm, the alarm goes off. The headlamps flash
and the horn sounds for about
30 seconds, then turns off to save
the battery power.
The vehicle can be started with the
correct ignition key if the alarm has
been set off.
To avoid setting off the alarm by
accident:
.Lock the vehicle with the door
key after the doors are closed.
.Unlock the door with the RKE
transmitter. Unlocking a door any
other way sets off the alarm if
the system has been armed.
Press
Kor place the key in the
ignition and turn it to START to turn
off the alarm.
Testing the Alarm
To test the alarm:
1. From inside the vehicle, lower the driver side window and open
the driver door.
2. Press
Q.

3-6 Seats and Restraints
Power Lumbar
On vehicles with power lumbar, the
control is located on the outboard
side of the seat. See“Power
Lumbar” underPower Seat
Adjustment
on page 3‑3for more
information.
To increase or decrease lumbar
support, press and hold the front or
rear of the control (C).
Release the control when the
seatback reaches the desired level
of lumbar support.
Reclining Seatbacks
Manual Reclining Seatbacks
{WARNING
You can lose control of the
vehicle if you try to adjust a
manual driver's seat while the
vehicle is moving. The sudden
movement could startle and
confuse you, or make you push a
pedal when you do not want to.
Adjust the driver's seat only when
the vehicle is not moving.
{WARNING
If either seatback is not locked, it
could move forward in a sudden
stop or crash. That could cause
injury to the person sitting there.
Always push and pull on the
seatbacks to be sure they are
locked. In vehicles with seats that have
manual reclining seatbacks, the
lever used to operate them is
located on the outboard side of the
seat. See
Seat Adjustment
on
page 3‑3.
To recline the seatback:
1. Lift the recline lever (C).
2. Move the seatback to the desired position, then release
the lever to lock the seatback in
place.
3. Push and pull on the seatback to make sure it is locked.
To return the seatback to an upright
position, do the following:
1. Lift the lever fully without applying pressure to the
seatback and the seatback will
return to the upright position.
2. Push and pull on the seatback to make sure it is locked.

4-4 Storage
Roof Rack System
{WARNING
If something is carried on top of
the vehicle that is longer or wider
than the roof rack—like paneling,
plywood, or a mattress— the wind
can catch it while the vehicle is
being driven. The item being
carried could be violently torn off,
and this could cause a collision,
and damage the vehicle. Never
carry something longer or wider
than the roof rack on top of the
vehicle unless using a GM
Certified accessory carrier. For vehicles with a roof rack, the
rack can be used to load items. For
roof racks that do not have
crossrails included, GM Certified
crossrails can be purchased as an
accessory. See your dealer/retailer
for additional information.
Notice:
Loading cargo on the
roof rack that weighs more than
91 kg (200 lbs) or hangs over the
rear or sides of the vehicle may
damage the vehicle. Load cargo
so that it rests evenly between
the crossrails, making sure to
fasten cargo securely. To prevent damage or loss of cargo
when driving, check to make sure
crossrails and cargo are securely
fastened. Loading cargo on the roof
rack will make the vehicle’
s center
of gravity higher. Avoid high speeds,
sudden starts, sharp turns, sudden
braking or abrupt maneuvers,
otherwise it may result in loss of
control. If driving for a long distance,
on rough roads, or at high speeds,
occasionally stop the vehicle to
make sure the cargo remains in its
place. Do not exceed the maximum
vehicle capacity when loading the
vehicle.
For more information on vehicle
capacity and loading, see Vehicle
Load Limits on page 9‑10.

Instruments and Controls 5-17
If the check engine light comes on
and stays on, while the engine is
running, this indicates that there is
an OBD II problem and service is
required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system assists
the service technician in correctly
diagnosing any malfunction.
Notice:If the vehicle is
continually driven with this light
on, after a while, the emission
controls might not work as well,
the vehicle's fuel economy might
not be as good, and the engine
might not run as smoothly. This
could lead to costly repairs that
might not be covered by the
vehicle warranty.
Notice: Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of the
original tires with other than those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by the
vehicle warranty. This could also
result in a failure to pass a
required Emission Inspection/
Maintenance test. See
Accessories and Modifications
on
page 10‑3.
This light comes on during a
malfunction in one of two ways:
Light Flashing: A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
The following can prevent more
serious damage to the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, when
it is safe to do so, stop the vehicle.
Find a safe place to park the
vehicle. Turn the key off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer/retailer for service as
soon as possible.
Light On Steady: An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
An emission system malfunction
might be corrected.
.Make sure the fuel cap is fully
installed. See Filling the Tankon
page 9‑42. The diagnostic
system can determine if the fuel
cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.

5-20 Instruments and Controls
Then start the engine again to reset
the system. If the light still stays on,
or comes on again while driving, the
vehicle needs service. If the regular
brake system warning light is not
on, there are still brakes, but no
antilock brakes. If the regular brake
system warning light is also on,
there are no antilock brakes and
there is a problem with the regular
brakes. SeeBrake System Warning
Light on page 5‑19.
Tow/Haul Mode Light
This light comes on when the Tow/
Haul mode has been activated.
For more information, see Tow/Haul
Mode on page 9‑25.
StabiliTrak®Indicator
Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer/retailer. If the system is
working normally the indicator light
goes off.
If it stays on, or comes on while
driving, there could be a problem
with the StabiliTrak system and the
vehicle might need service. When
this warning light is on, the system
is off and will not limit wheel spin.
This light flashes when the
StabiliTrak system is active.
See StabiliTrak System
on
page 9‑28for more information.
Engine Coolant
Temperature Warning
Light
The engine coolant temperature
warning light comes on briefly when
the engine is started.
If it does not, have the vehicle
serviced by your dealer/retailer.
If the system is working normally the
indicator light then goes off.
If the light comes on and stays on
while driving, the vehicle may have
a problem with the cooling system.
Stop the vehicle and turn off the
engine to avoid damage to the
engine. A warning chime sounds
when this light is on.
See Engine Overheating
on
page 10‑19for more information.

Instruments and Controls 5-21
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. SeeTire
Messages
on page 5‑41for 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 10‑43for 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 10‑45for more
information.
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.

Instruments and Controls 5-27
RANGE
Press the trip/fuel button until
RANGE displays. This display
shows the approximate number of
remaining miles (mi) or
kilometers (km) the vehicle can be
driven without refueling. The display
will show LOW if the fuel level
is low.
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. This estimate will
change if driving conditions change.
For example, if driving in traffic and
making frequent stops, this display
may read one number, but if the
vehicle is driven on a freeway, the
number may change even though
the same amount of fuel is in the
fuel tank. This is because different
driving conditions produce different
fuel economies. Generally, freeway
driving produces better fuel
economy than city driving. Fuel
range cannot be reset.AVG (Average) ECONOMY
Press the trip/fuel button until AVG
ECONOMY displays. This display
shows the approximate average
miles per gallon (mpg) or liters per
100 kilometers (L/100 km). This
number is calculated based on the
number of mpg (L/100 km) recorded
since the last time this menu item
was reset. To reset AVG
ECONOMY, press and hold the set/
reset button.
TIMER
Press the trip/fuel button until
TIMER displays. This display can be
used as a timer.
To start the timer, press the set/
reset button while TIMER is
displayed. The display will show the
amount of time that has passed
since the timer was last reset, not
including time the ignition is off.
Time will continue to be counted as
long as the ignition is on, even if
another display is being shown on
the DIC. The timer will record up to
99 hours, 59 minutes and
59 seconds (99:59:59) after which
the display will return to zero.
To stop the timer, press the set/reset
button briefly while TIMER is
displayed.
To reset the timer to zero, press and
hold the set/reset button while
TIMER is displayed.
FUEL USED
Press the trip/fuel button until FUEL
USED displays. This display shows
the number of gallons (gal) or
liters (L) of fuel used since the last
reset of this menu item. To reset the
fuel used information, press and
hold the set/reset button while FUEL
USED is displayed.
AVG (Average) SPEED
Press the trip/fuel button until AVG
SPEED displays. This display
shows the average speed of the
vehicle in miles per hour (mph) or
kilometers per hour (km/h). This
average is calculated based on the
various vehicle speeds recorded