warning light GMC YUKON XL 2007 Owner's 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 may 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 your 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 may cause a
brake squeal when the brakes are rst applied
or lightly applied. This does not mean something
is wrong with your 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 GM torque
specications.
Brake linings should always be replaced as
complete axle sets.
Brake Pedal Travel
See your dealer 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 of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc
brakes adjust for wear.
465

For additional information and details about the
DIC operation and displays seeDIC Operation and
Displays (With DIC Buttons) on page 244orDIC
Operation and Displays (Without DIC Buttons)
on page 251andDIC Warnings and Messages on
page 254.
You may notice, during cooler weather conditions,
that the tire pressure monitor light, located on
the instrument panel cluster, and the CHECK TIRE
PRESSURE message will appear when the
vehicle is rst started and then turn off as you
start to drive the vehicle. This could be an early
indicator that the tire pressures are getting low and
need to be inated to the proper pressure.
Each tire, including the spare (if provided), should
be checked monthly when cold and inated to
the ination pressure recommended by the vehicle
manufacturer on the vehicle placard or tire
ination pressure label. (If your vehicle has tires of
a different size than the size indicated on the
vehicle placard or tire ination pressure label, you
should determine the proper tire ination
pressure for those tires.)As an added safety
feature, your vehicle has
been equipped with a
tire pressure monitoring
system (TPMS) that
illuminates a low tire
pressure telltale when
one or more of your tires
is signicantly
under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires
as soon as possible, and inate them to the
proper pressure. Driving on a signicantly
under-inated tire causes the tire to overheat and
can lead to tire failure. Under-ination also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-ination has not reached the level to
trigger illumination of the TPMS low tire pressure
telltale.
493

Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the
system is not operating properly. The TPMS
malfunction indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will ash for approximately
one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists.
When the malfunction indicator is illuminated, the
system may not be able to detect or signal low
tire pressure as intended. TPMS malfunctions may
occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from
functioning properly. Always check the TPMS
malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.The CHECK TIRE PRESSURE warning message
and low tire pressure light (telltale) will come
on each time the vehicle is started until the tires
are inated to the correct ination pressure.
The Tire and Loading Information label (tire
information placard) shows the size of your
vehicle’s original tires and the correct ination
pressure for your vehicle’s tires when they
are cold. SeeInation - Tire Pressure on
page 490. For the location of the tire and loading
information label, seeLoading Your Vehicle
on page 390.
Your vehicle’s TPMS can alert you about a low
tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 497andTires on page 482.
Notice:Do not use a tire sealant if your
vehicle has Tire Pressure Monitors. The liquid
sealant can damage the tire pressure monitor
sensors.
494

While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform to
federal safety requirements and additional General
Motors Tire Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based
on the wear rate of the tire when tested under
controlled conditions on a specied government
test course. For example, a tire graded 150 would
wear one and a half (1.5) times as well on the
government course as a tire graded 100. The
relative performance of tires depends upon the
actual conditions of their use, however, and may
depart signicantly from the norm due to variations
in driving habits, service practices, and differences
in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specied
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B,
and C, representing the tire’s resistance to
the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a
specied indoor laboratory test wheel. Sustained
high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under
the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel
than the minimum required by law.
Warning:The temperature grade for this tire is
established for a tire that is properly inated
and not overloaded. Excessive speed,
underination, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
503

A
Accessories and Modications...................... 426
Accessory Power Outlet(s)........................... 208
Adding a Snow Plow or Similar Equipment...... 396
Adding Equipment to Your
Airbag-Equipped Vehicle........................... 105
Additives, Fuel............................................. 429
Add-On Electrical Equipment........................ 539
Adjustable Throttle and Brake Pedal............. 140
Air Cleaner/Filter, Engine.............................. 443
Air Conditioning....................................210, 213
Airbag
Passenger Status Indicator....................... 228
Readiness Light........................................ 227
Airbag Sensing and Diagnostic
Module (SDM).......................................... 583
Airbag System............................................... 90
Adding Equipment to Your
Airbag-Equipped Vehicle........................ 105
How Does an Airbag Restrain?................... 98
Passenger Sensing System....................... 100
Servicing Your Airbag-Equipped Vehicle...... 104
What Makes an Airbag Inate?................... 98Airbag System (cont.)
What Will You See After an
Airbag Inates?....................................... 99
When Should an Airbag Inate?.................. 96
Where Are the Airbags?.............................. 93
Antenna, Rear Side Window........................ 337
Antenna, XM™ Satellite Radio
Antenna System....................................... 337
Anti-Lock Brake System (ABS)..................... 345
Anti-Lock Brake, System Warning Light........ 233
Appearance Care......................................... 527
Aluminum or Chrome-Plated Wheels......... 534
Care of Safety Belts................................. 531
Chemical Paint Spotting............................ 536
Cleaning Exterior Lamps/Lenses............... 532
Cleaning the Inside of Your Vehicle........... 528
Fabric/Carpet............................................ 529
Finish Care............................................... 532
Finish Damage.......................................... 536
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 531
Leather..................................................... 530
Sheet Metal Damage................................ 535
Tires......................................................... 535
Underbody Maintenance............................ 536
593

Appearance Care (cont.)
Vehicle Care/Appearance Materials........... 537
Washing Your Vehicle............................... 532
Weatherstrips............................................ 531
Windshield, Backglass, and Wiper Blades.... 534
Ashtray(s)..................................................... 209
Audio System(s)........................................... 274
Audio Steering Wheel Controls................. 334
Care of Your CD and DVD Player............. 337
Care of Your CDs and DVDs.................... 336
Navigation/Radio System,
see Navigation Manual.......................... 321
Radio with CD.......................................... 278
Radio with CD and DVD........................... 295
Rear Seat Audio (RSA)............................. 332
Rear Side Window Antenna...................... 337
Setting the Time................................276, 277
Theft-Deterrent Feature............................. 334
Understanding Radio Reception................ 335
XM™ Satellite Radio Antenna System....... 337
Automatic Headlamp System........................ 201
Automatic Transmission
Fluid......................................................... 445
Operation.................................................. 142
Autoride
®..................................................... 405
Auxiliary Roof Mounted Lamp Switch........... 203
B
Battery......................................................... 466
Run-Down Protection................................ 204
Before Leaving on a Long Trip..................... 380
Bench Seat, Split (60/40)............................... 20
Brake
Anti-Lock Brake System (ABS).................. 345
Emergencies............................................. 347
Parking..................................................... 151
System Warning Light............................... 232
Brake Pedal, Throttle.................................... 140
Brakes......................................................... 463
Braking........................................................ 344
Braking in Emergencies................................ 347
Break-In, New Vehicle.................................. 136
Bucket Seats, Rear........................................ 26
Bulb Replacement........................................ 478
Halogen Bulbs.......................................... 478
Headlamp Aiming...................................... 475
License Plate Lamps................................. 480
Replacement Bulbs................................... 481
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps..................................... 478
Buying New Tires......................................... 500
594

C
Calibration............................................157, 160
California Fuel.............................................. 429
California Proposition 65 Warning................. 427
Canadian Owners............................................ 3
Capacities and Specications....................... 548
Carbon Monoxide.................123, 125, 155, 405
Care of
Safety Belts.............................................. 531
Your CD and DVD Player......................... 337
Your CDs and DVDs................................. 336
Cargo Cover................................................ 176
Cargo Management System......................... 178
Center Console Storage Area....................... 175
Center Front Passenger Position,
Safety Belts................................................ 53
Center Seat................................................... 19
Chains, Tire................................................. 506
Charging System Light................................. 230
Check
Engine Light............................................. 236
Checking Things Under the Hood................. 434
Chemical Paint Spotting............................... 536
Child Restraints
Child Restraint Systems.............................. 68
Infants and Young Children......................... 64Child Restraints (cont.)
Lower Anchors and Tethers for Children..... 73
Older Children............................................ 61
Securing a Child Restraint in a
Rear Seat Position.................................. 83
Securing a Child Restraint in the
Center Front Seat Position...................... 85
Securing a Child Restraint in the
Right Front Seat Position........................ 86
Where to Put the Restraint......................... 72
Cigarette Lighter........................................... 209
Cleaning
Aluminum or Chrome-Plated Wheels......... 534
Exterior Lamps/Lenses.............................. 532
Fabric/Carpet............................................ 529
Finish Care............................................... 532
Inside of Your Vehicle............................... 528
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 531
Leather..................................................... 530
Tires......................................................... 535
Underbody Maintenance............................ 536
Washing Your Vehicle............................... 532
Weatherstrips............................................ 531
Windshield, Backglass, and
Wiper Blades......................................... 534
Climate Control System................................ 210
595

Driver Information Center (DIC).................... 244
DIC Operation and Displays..............244, 251
DIC Vehicle Customization........................ 264
DIC Warnings and Messages.................... 254
Driving
At Night.................................................... 373
City........................................................... 378
Defensive.................................................. 340
Drunken.................................................... 341
Freeway.................................................... 379
Hill and Mountain Roads........................... 382
In Rain and on Wet Roads....................... 375
Off-Road................................................... 356
Recovery Hooks....................................... 389
Rocking Your Vehicle to Get it Out........... 388
Winter....................................................... 384
Dual Automatic Climate Control System........ 213
DVD
Rear Seat Entertainment System.............. 321
E
Electrical System
Add-On Equipment.................................... 539
Center Instrument Panel Fuse Block......... 542
Fuses and Circuit Breakers....................... 540
Instrument Panel Fuse Block.................... 540Electrical System (cont.)
Power Windows and Other
Power Options....................................... 539
Underhood Fuse Block.............................. 543
Windshield Wiper Fuses............................ 539
Engine
Air Cleaner/Filter....................................... 443
Battery...................................................... 466
Check and Service Engine Soon Light...... 236
Coolant..................................................... 449
Coolant Heater.......................................... 140
Coolant Temperature Gage....................... 234
Drive Belt Routing..................................... 567
Engine Compartment Overview................. 436
Exhaust.................................................... 155
Fan Noise................................................. 460
Oil ............................................................ 438
Oil Life System......................................... 441
Overheated Protection Operating Mode....... 454
Overheating.............................................. 452
Starting..................................................... 138
Entry Lighting............................................... 204
Event Data Recorders (EDR)....................... 583
Exit Lighting................................................. 204
Extender, Safety Belt...................................... 60
Exterior Lamps............................................. 199
597

F
Filter
Engine Air Cleaner.................................... 443
Finish Damage............................................. 536
Flashers, Hazard Warning............................ 188
Flash-to-Pass............................................... 192
Flat Tire....................................................... 507
Flat Tire, Changing....................................... 508
Flat Tire, Storing.......................................... 522
Fluid
Automatic Transmission............................. 445
Power Steering......................................... 461
Windshield Washer................................... 462
Fog Lamp Light............................................ 241
Fog Lamps................................................... 202
Four-Wheel Drive.................................146, 473
Front Axle.................................................... 474
Fuel............................................................. 428
Additives................................................... 429
California Fuel.......................................... 429
E85 (85% Ethanol)................................... 430
Filling a Portable Fuel Container............... 434
Filling Your Tank....................................... 432
Fuels in Foreign Countries........................ 431
Gage........................................................ 243Fuel (cont.)
Gasoline Octane....................................... 428
Gasoline Specications............................. 428
Low Warning Light.................................... 243
Fuses
Center Instrument Panel Fuse Block......... 542
Fuses and Circuit Breakers....................... 540
Instrument Panel Fuse Block.................... 540
Underhood Fuse Block.............................. 543
Windshield Wiper...................................... 539
G
Gage
Engine Coolant Temperature..................... 234
Fuel.......................................................... 243
Oil Pressure.............................................. 239
Speedometer............................................ 226
Tachometer............................................... 226
Voltmeter Gage......................................... 231
Garage Door Opener................................... 169
Gasoline
Octane...................................................... 428
Specications............................................ 428
Glove Box.................................................... 174
GM Mobility Reimbursement Program........... 577
598

H
Hazard Warning Flashers............................. 188
Head Restraints............................................. 18
Headlamp
Aiming...................................................... 475
Headlamps
Automatic Headlamp System.................... 201
Bulb Replacement..................................... 478
Daytime Running Lamps........................... 201
Flash-to-Pass............................................ 192
Halogen Bulbs.......................................... 478
High/Low Beam Changer.......................... 192
On Reminder............................................ 200
Heated Seats................................................. 12
Heater.......................................................... 210
Heater.......................................................... 213
Highbeam On Light...................................... 242
Highway Hypnosis........................................ 381
Hill and Mountain Roads.............................. 382
Hood
Checking Things Under............................. 434
Release.................................................... 435
Horn............................................................ 189
How to Use This Manual................................. 3
How to Wear Safety Belts Properly................ 43
I
Ignition Positions.......................................... 137
Infants and Young Children, Restraints........... 64
Ination - Tire Pressure................................ 490
Instrument Panel
Overview.................................................. 186
Instrument Panel (I/P)
Brightness................................................. 203
Cluster...................................................... 225
J
Jump Starting............................................... 467
K
Keyless Entry System.................................. 112
Keys............................................................ 111
L
Labeling, Tire Sidewall................................. 484
Lamps
Auxiliary Roof Mounted Lamp................... 203
Battery Run-Down Protection.................... 204
Dome....................................................... 203
599