2008 GMC ACADIA bulb

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
..............................................1-11
Safety Belts
.............................................1-16
Child Restraints
.......................................1-36
Airbag System
.........................................1-61
Restraint System Check
............................1-77
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-18
Theft-Deterrent Systems............................2-21
Starting and Operating Your Vehicle
...........2-25
Mirrors
....................................................2-40
Object Detection Systems
..........................2-45
OnStar
®System
......................................2-47
Universal Home Remote System
................2-50
Storage Areas
.........................................2-55
Sunroof
..................................................2-60
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-26
Warning Lights, Gages, and Indicators
........3-39
Driver Information Center (DIC)
..................3-57
Audio System(s)
.......................................3-84Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-26
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-6
Checking Things Under the Hood
...............5-12
All-Wheel Drive
........................................5-43
Headlamp Aiming
.....................................5-45
Bulb Replacement
....................................5-45
Windshield Wiper Blade Replacement
.........5-47
Tires
......................................................5-48
Appearance Care
.....................................5-89
Vehicle Identication
.................................5-98
Electrical System
......................................5-99
Capacities and Specications
...................5-107
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-13
Vehicle Data Recording and Privacy
...........7-15
Index................................................................ 1
2008 GMC Acadia Owner ManualM

Turn Signal/Multifunction Lever
The lever on the left side of the steering column includes
the following:
GTurn and Lane Change Signals.SeeTurn
and Lane-Change Signals on page 3-8.
3Headlamp High/Low-Beam Changer.See
Headlamp High/Low-Beam Changer on page 3-9.
Flash-to-Pass. SeeFlash-to-Pass on page 3-9.
NWindshield Wipers.SeeWindshield Wipers
on page 3-9.
LWindshield Washer.SeeWindshield Washer
on page 3-10.
For information on the headlamps, seeExterior Lamps
on page 3-14.
Turn and Lane-Change Signals
The turn signal has two upward (for right) and
two downward (for left) positions. These positions
allow you to signal a turn or a lane change.
To signal a turn, move the lever all the way up or
down. When the turn is nished, the lever will return
automatically.
An arrow on the instrument
panel cluster will ash
in the direction of the
turn or lane change.
To signal a lane change, raise or lower the lever until
the arrow starts to ash. Hold it there until you complete
your lane change. The lever will return by itself when
you release it. If you momentarily press and release the
lever, the turn signal will ash three times.
If the arrow ashes faster than normal as you signal a
turn or a lane change, a signal bulb may be burned
out and other drivers will not see your turn signal.
3-8

If a bulb is burned out, replace it to help avoid an
accident. If the arrows do not go on at all when you
signal a turn, check for burned-out bulbs and then check
the fuse. SeeFuses and Circuit Breakers on
page 5-100.
Turn Signal On Chime
If either one of the turn signals are left on and you have
drove more than 3/4 mile (1.2 km), a chime will sound.
Headlamp High/Low-Beam
Changer
To change the headlamps from low beam to high beam,
push the turn signal/multifunction lever toward the
front of the vehicle.
This light on the instrument
panel cluster comes on
if the high beam lamps
are turned on while
the ignition is on.
To change the headlamps from high beam to low beam,
pull the turn signal lever toward the rear of the vehicle.
Flash-to-Pass
With the turn signal lever in the low-beam position,
pull the lever toward you momentarily to switch
to high-beam, to signal that you are going to pass.
If the headlamps are on, they will return to low-beam
when the lever is released.
Windshield Wipers
Clear ice and snow from the wiper blades before
using them. If they are frozen to the windshield, gently
loosen or thaw them. Damaged wiper blades may
not clear the windshield well, making it harder to see
and drive safely. If the blades do become damaged,
install new blades or blade inserts. For more information,
seeWindshield Wiper Blade Replacement on page 5-47.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools down.
Clear away snow or ice to prevent an overload.
Turn the band with the wiper symbol to control the
windshield wipers.
3-9

Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal asher and/or extra wiring. Check
with your dealer/retailer. The arrows on your instrument
panel will ash whenever you signal a turn or lane
change. Properly hooked up, the trailer lamps will also
ash, telling other drivers you’re about to turn,
change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will ash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It
is important to check occasionally to be sure the trailer
bulbs are still working.
Driving on Grades
Your vehicle is designed primarily as a passenger and
load carrying vehicle. If you tow a trailer, your vehicle
will require more frequent maintenance due to the
additional load. Because of the added load of the trailer,
your vehicle’s engine may overheat on hot days,
when going up a long or steep grade with a trailer. If the
engine coolant temperature gage indicates overheating,
turn off the air conditioning to reduce engine load,
pull off the road and stop in a safe spot.
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you do not shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your
speed to around 55 mph (88 km/h) to reduce the
possibility of the engine and the transmission
overheating.
4-39

Service............................................................5-3
Accessories and Modications..........................5-4
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements.....5-4
Doing Your Own Service Work.........................5-5
Adding Equipment to the Outside of Your
Vehicle......................................................5-6
Fuel................................................................5-6
Gasoline Octane............................................5-6
Gasoline Specications....................................5-6
California Fuel...............................................5-7
Additives.......................................................5-7
Fuels in Foreign Countries...............................5-8
Filling the Tank..............................................5-9
Filling a Portable Fuel Container.....................5-12
Checking Things Under the Hood....................5-12
Hood Release..............................................5-13
Engine Compartment Overview.......................5-14
Engine Oil...................................................5-15
Engine Oil Life System..................................5-18
Engine Air Cleaner/Filter................................5-20
Automatic Transmission Fluid.........................5-21
Engine Coolant.............................................5-22
Radiator Pressure Cap..................................5-24
Engine Overheating.......................................5-25
Overheated Engine Protection Operating Mode . . .5-26Cooling System............................................5-27
Power Steering Fluid.....................................5-33
Windshield Washer Fluid................................5-34
Brakes........................................................5-35
Battery........................................................5-38
Jump Starting...............................................5-39
All-Wheel Drive..............................................5-43
Headlamp Aiming...........................................5-45
Bulb Replacement..........................................5-45
Halogen Bulbs..............................................5-45
License Plate Lamp......................................5-46
Replacement Bulbs.......................................5-46
Windshield Wiper Blade Replacement..............5-47
Tires..............................................................5-48
Tire Sidewall Labeling...................................5-49
Tire Terminology and Denitions.....................5-52
Ination - Tire Pressure.................................5-55
Tire Pressure Monitor System.........................5-57
Tire Pressure Monitor Operation.....................5-58
Tire Inspection and Rotation...........................5-62
When It Is Time for New Tires.......................5-63
Buying New Tires.........................................5-64
Different Size Tires and Wheels......................5-66
Uniform Tire Quality Grading..........................5-67
Wheel Alignment and Tire Balance..................5-68
Section 5 Service and Appearance Care
5-1

Headlamp Aiming
Headlamp aim has been preset at the factory and
should need no further adjustment.
However, if your vehicle is damaged in a crash, the
headlamp aim may be affected. Aim adjustment to the
low-beam headlamps may be necessary if oncoming
drivers ash their high-beam headlamps at you
(for vertical aim).
If the headlamps need to be re-aimed, it is
recommended that you take the vehicle to your
dealer/retailer for service.
Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-46.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
Halogen Bulbs
{CAUTION:
Halogen bulbs have pressurized gas inside
and can burst if you drop or scratch the bulb.
You or others could be injured. Be sure to read
and follow the instructions on the bulb
package.
5-45

License Plate Lamp
To replace one of these bulbs:
1. Remove the two screws holding each of the license
plate lamps to the liftgate trim.
2. Turn and pull the license plate lamp forward
through the lift gate trim opening.
3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.4. Install the new bulb.
5. Reverse steps1–3toreinstall the license
plate lamp.
Replacement Bulbs
Exterior Lamp Bulb Number
License Plate Lamp 194
For replacement bulbs not listed here, contact your
dealer/retailer.
5-46

Audio System (cont.)
Setting the Time..........................................3-85
Theft-Deterrent Feature...............................3-127
Audio System(s).............................................3-87
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-30
B
Battery..........................................................5-38
Electric Power Management..........................3-19
Run-Down Protection...................................3-20
Brake
Emergencies................................................ 4-6
Brakes..........................................................5-35
System Warning Light..................................3-47
Braking........................................................... 4-4
Braking in Emergencies..................................... 4-6
Break-In, New Vehicle.....................................2-25
Bulb Replacement...........................................5-45
Halogen Bulbs............................................5-45
Headlamp Aiming........................................5-45
License Plate Lamps....................................5-46
Replacement Bulbs......................................5-46
Buying New Tires...........................................5-64
C
Calibration.....................................................2-40
California Fuel.................................................. 5-7
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications..........................5-107
Carbon Monoxide...................2-14, 2-38, 4-17, 4-30
Care of
Safety Belts................................................5-92
Cargo Cover..................................................2-58
Cargo Management System.............................2-59
Cargo Tie Downs............................................2-59
CD, MP3 ............................................3-104, 3-108
Center Console Storage Area...........................2-56
Chains, Tire...................................................5-70
Charging System Light....................................3-45
Check
Engine Light...............................................3-50
Checking Things Under the Hood......................5-12
Chemical Paint Spotting...................................5-96
Child Restraints
Child Restraint Systems...............................1-43
Infants and Young Children...........................1-39
Lower Anchors and Tethers for Children..........1-47
Older Children.............................................1-36
2