height GMC ACADIA 2007 User Guide

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound can come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon the brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out
brake pads could result in costly brake repair.Some driving conditions or climates can cause a
brake squeal when the brakes are rst applied
or lightly applied. This does not mean something
is wrong with the brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated,
inspect brake pads for wear and evenly tighten
wheel nuts in the proper sequence to torque
specications inCapacities and Specifications on
page 497.
Brake linings should always be replaced as
complete axle sets.Brake Pedal Travel
See your dealer/retailer if the brake pedal does
not return to normal height, or if there is a
rapid increase in pedal travel. This could be a sign
that brake service might be required.
Brake Adjustment
Every time you apply the brakes, with or without
the vehicle moving, the brakes adjust for wear.
423

Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.(A) Tire Size:The tire size is a combination of
letters and numbers used to dene a particular tire’s
width, height, aspect ratio, construction type, and
service description. See the “Tire Size” illustration
later in this section for more detail.
(B) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):
The Department of Transportation (DOT) code
indicates that the tire is in compliance with
the U.S. Department of Transportation Motor
Vehicle Safety Standards.
(D) Tire Identication Number (TIN):The letters
and numbers following DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
Passenger (P-Metric) Tire Example
436

(B) Tire Ply Material:The type of cord and
number of plies in the sidewall and under the
tread.
(C) Tire Identication Number (TIN):The letters
and numbers following the DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
(D) Maximum Cold Ination Load Limit:
Maximum load that can be carried and the
maximum pressure needed to support that load.
(E) Tire Ination:The temporary use tire or
compact spare tire should be inated to 60 psi
(420 kPa). For more information on tire pressure
and ination seeInflation - Tire Pressure on
page 442.
(F) Tire Size:A combination of letters and
numbers dene a tire’s width, height, aspect ratio,
construction type, and service description.
The letter T as the rst character in the tire size
means the tire is for temporary use only.(G) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
Tire Size
The following illustration shows an example of a
typical passenger vehicle tire size.
(A) Passenger (P-Metric) Tire:The United
States version of a metric tire sizing system.
The letter P as the rst character in the tire size
means a passenger vehicle tire engineered
to standards set by the U.S. Tire and Rim
Association.
438

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as high
as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
439

Each new wheel should have the same
load-carrying capacity, diameter, width, offset
and be mounted the same way as the one
it replaces.
If you need to replace any of your wheels, wheel
bolts, or wheel nuts, replace them only with
new GM original equipment parts. This way,
you will be sure to have the right wheel, wheel
bolts, and wheel nuts for your vehicle.
{CAUTION:
Using the wrong replacement wheels,
wheel bolts, or wheel nuts on your vehicle
can be dangerous. It could affect the
braking and handling of your vehicle,
make your tires lose air and make you
lose control. You could have a collision
in which you or others could be injured.
Always use the correct wheel, wheel bolts,
and wheel nuts for replacement.Notice:The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle ground
clearance, and tire or tire chain clearance
to the body and chassis.
SeeChanging a Flat Tire on page 458for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has
been used or how far it has been driven.
It could fail suddenly and cause a crash.
If you have to replace a wheel, use a new
GM original equipment wheel.
455

D
Daytime Running Lamps/Automatic
Headlamp System.................................... 185
Defensive Driving........................................ 330
Delayed Entry Lighting................................ 187
Delayed Exit Lighting................................... 188
Delayed Headlamps.................................... 184
Delayed Locking.......................................... 107
Disc, MP3..........................................295, 301
Doing Your Own Service Work.................... 386
Door
Delayed Locking...................................... 107
Locks....................................................... 106
Power Door Locks................................... 107
Programmable Automatic Door Locks....... 107
Rear Door Security Locks........................ 108
Driver
Position, Safety Belt................................... 30
Seat Height Adjuster.................................. 10
Driver Information Center (DIC)................... 232
DIC Operation and Displays............233, 239
DIC Vehicle Customization....................... 255
DIC Warnings and Messages................... 244Driving
At Night................................................... 346
City.......................................................... 350
Defensive................................................. 330
Drunken................................................... 331
Freeway................................................... 351
Hill and Mountain Roads.......................... 354
In Rain and on Wet Roads...................... 347
Rocking Your Vehicle to Get it Out.......... 361
Winter...................................................... 356
Dual Automatic Climate Control System....... 203
DVD
Rear Seat Entertainment System............. 311
E
EDR ............................................................ 536
Electrical System
Add-On Equipment................................... 489
Fuses and Circuit Breakers...................... 490
Instrument Panel Fuse Block................... 490
Power Windows and Other
Power Options...................................... 490
Underhood Fuse Block............................. 493
Windshield Wiper Fuses........................... 490
543

G
Gage
Engine Coolant Temperature.................... 225
Fuel......................................................... 231
Speedometer........................................... 216
Tachometer.............................................. 216
Voltmeter Gage........................................ 221
Garage Door Opener................................... 150
Gasoline
Octane..................................................... 388
Specications........................................... 388
Glove Box................................................... 161
GM Mobility Reimbursement Program.......... 523
H
Hazard Warning Flashers............................ 172
Head Restraints............................................ 17
Headlamp
Aiming..................................................... 431
Headlamps
Bulb Replacement.................................... 432
Daytime Running Lamps/Automatic
Headlamp System................................ 185Headlamps (cont.)
Delayed................................................... 184
Exterior Lamps......................................... 183
Flash-to-Pass........................................... 176
Halogen Bulbs......................................... 432
High Intensity Discharge (HID) Lighting.... 432
High/Low Beam Changer......................... 176
Head-Up Display (HUD).............................. 190
Heated Seats................................................ 12
Heater......................................................... 199
Heater......................................................... 203
Height Adjuster, Driver Seat.......................... 10
High Voltage Devices and Wiring................ 489
Highbeam On Light..................................... 230
Highway Hypnosis....................................... 353
Hill and Mountain Roads............................. 354
Hood
Checking Things Under............................ 394
Release................................................... 395
Horn............................................................ 173
How to Use This Manual................................ 4
How to Wear Safety Belts Properly............... 29
545

Restraint System Check
Checking the Restraint Systems................. 92
Replacing Restraint System Parts
After a Crash......................................... 93
Retained Accessory Power (RAP)................ 125
Right Front Passenger Position,
Safety Belts............................................... 39
Roadside
Assistance Program................................. 524
Rocking Your Vehicle to Get it Out.............. 361
Routing, Engine Drive Belt.......................... 513
Running the Engine While Parked............... 139
S
Safety Belt
Passenger Reminder Light....................... 217
Pretensioners............................................. 47
Reminder Light........................................ 216
Safety Belts
Care of.................................................... 482
Driver Position........................................... 30
How to Wear Safety Belts Properly............ 29
Questions and Answers About
Safety Belts............................................ 28
Rear Safety Belt Comfort Guides............... 43Safety Belts (cont.)
Rear Seat Passengers............................... 40
Right Front Passenger Position.................. 39
Safety Belt Extender.................................. 47
Safety Belt Use During Pregnancy............. 39
Safety Belts Are for Everyone.................... 24
Shoulder Belt Height Adjuster.................... 38
Safety Warnings and Symbols......................... 4
Scheduled Maintenance............................... 502
Seats
Driver Seat Height Adjuster........................ 10
Head Restraints......................................... 17
Heated Seats............................................. 12
Manual........................................................ 9
Manual Lumbar.......................................... 11
Memory, Mirrors......................................... 13
Power Lumbar........................................... 12
Power Seats.............................................. 10
Rear Seat Operation.................................. 18
Reclining Seatbacks................................... 15
Third Row Seat......................................... 21
Secondary Latch System............................. 468
Securing a Child Restraint
Rear Seat Position..................................... 69
Right Front Seat Position........................... 72
Security Light.............................................. 229
551

Service........................................................ 385
Accessories and Modications.................. 385
Adding Equipment to the Outside of
Your Vehicle......................................... 387
California Proposition 65 Warning............. 386
Doing Your Own Work............................. 386
Engine Soon Light................................... 226
Publications Ordering Information............. 535
Servicing Your Airbag-Equipped Vehicle......... 90
Sheet Metal Damage................................... 486
Shifting Into Park (P)................................... 135
Shifting Out of Park (P)............................... 137
Shoulder Belt Height Adjuster........................ 38
Signals, Turn and Lane-Change.................. 175
Spare Tire
Compact.................................................. 477
Installing.................................................. 463
Removing................................................ 459
Storing..................................................... 472
Specications, Capacities............................ 497
Speedometer............................................... 216
StabiliTrak
®System..................................... 337
StabiliTrak®Indicator Light........................... 224
Starting Your Engine................................... 126
Steering...................................................... 340
Steering Wheel Controls, Audio................... 325
Steering Wheel, Power Tilt Wheel and
Telescopic Steering Column..................... 174Storage Areas
Cargo Management System..................... 164
Center Console Storage Area................... 161
Convenience Net..................................... 163
Cupholder(s)............................................ 161
Glove Box................................................ 161
Instrument Panel Storage Area................. 161
Luggage Carrier....................................... 162
Rear Seat Armrest................................... 163
Stuck in Sand, Mud, Ice, or Snow............... 360
Sun Visors.................................................. 117
Sunroof....................................................... 164
System Identication, Universal Home
Remote System....................................... 149
T
Tachometer................................................. 216
Telescopic Steering Column,
Power Tilt Wheel...................................... 174
Theft-Deterrent, Radio................................. 325
Theft-Deterrent Systems.............................. 118
Content Theft-Deterrent............................ 118
PASS-Key
®III+........................................ 120
PASS-Key®III+ Operation........................ 121
Time, Setting............................................... 266
552