2018 GMC YUKON light

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
358 Vehicle Care
Caution
If any accessories are left on or
plugged in during the jump
starting procedure, they could be
damaged. The repairs would not
be covered by the vehicle
warranty. Whenever possible, turn
off or unplug all accessories on
either vehicle when jump starting.
3. Turn the ignition off on both vehicles. Unplug unnecessary
accessories plugged into the
accessory power outlets. Turn
off the radio and all the lamps
that are not needed. This will
avoid sparks and help save
both batteries. And it could
save the radio!
4. Open the hood on the other vehicle and locate the
positive (+) and negative (−)
terminal locations on that
vehicle. The positive (+) terminal is
under a red plastic cover at the
positive battery post. To
uncover the positive (+)
terminal, open the red plastic
cover.
For more information on the
location of the remote
positive (+) and remote
negative (−) terminals, see
Engine Compartment Overview
0
284.
{Warning
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{Warning
Using a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded.
Use a flashlight if you need more
light.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{Warning
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Vehicle Care 365
Appearance Care
Exterior Care
Locks
Locks are lubricated at the factory.
Use a de-icing agent only when
absolutely necessary, and have the
locks greased after using. See
Recommended Fluids and
Lubricants0384.
Washing the Vehicle
To preserve the vehicle's finish,
wash it often and out of direct
sunlight.
Caution
Do not use petroleum-based,
acidic, or abrasive cleaning
agents as they can damage the
vehicle's paint, metal, or plastic
parts. If damage occurs, it would
not be covered by the vehicle
warranty. Approved cleaning
products can be obtained from
(Continued)
Caution (Continued)
your dealer. Follow all
manufacturer directions regarding
correct product usage, necessary
safety precautions, and
appropriate disposal of any
vehicle care product.
Caution
Avoid using high-pressure
washes closer than 30 cm (12 in)
to the surface of the vehicle. Use
of power washers exceeding
8,274 kPa (1,200 psi) can result
in damage or removal of paint
and decals.
Caution
Do not power wash any
component under the hood that
has this
esymbol.
(Continued)
Caution (Continued)
This could cause damage that
would not be covered by the
vehicle warranty.
If using an automatic car wash,
follow the car wash instructions. The
windshield wiper and rear window
wiper, if equipped, must be off.
Remove any accessories that may
be damaged or interfere with the car
wash equipment.
Rinse the vehicle well, before
washing and after, to remove all
cleaning agents completely. If they
are allowed to dry on the surface,
they could stain.
Dry the finish with a soft, clean
chamois or an all-cotton towel to
avoid surface scratches and water
spotting.
Finish Care
Application of aftermarket clearcoat
sealant/wax materials is not
recommended. If painted surfaces
are damaged, see your dealer to

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
370 Vehicle Care
Use a soft bristle brush to remove
dust from knobs and crevices on the
instrument cluster. Using a mild
soap solution, immediately remove
hand lotions, sunscreen, and insect
repellent from all interior surfaces or
permanent damage may result.
Use cleaners specifically designed
for the surfaces being cleaned to
prevent permanent damage. Apply
all cleaners directly to the cleaning
cloth. Do not spray cleaners on any
switches or controls. Remove
cleaners quickly.
Before using cleaners, read and
follow all safety instructions on the
label. While cleaning the interior,
open the doors and windows to get
proper ventilation.
To prevent damage, do not clean
the interior using the following
cleaners or techniques:
.Never use a razor or any other
sharp object to remove soil from
any interior surface.
. Never use a brush with stiff
bristles. .
Never rub any surface
aggressively or with too much
pressure.
. Do not use laundry detergents or
dishwashing soaps with
degreasers. For liquid cleaners,
use approximately 20 drops per
3.8 L (1 gal) of water.
A concentrated soap solution will
create streaks and attract dirt.
Do not use solutions that contain
strong or caustic soap.
. Do not heavily saturate the
upholstery when cleaning.
. Do not use solvents or cleaners
containing solvents.
Interior Glass
To clean, use a terry cloth fabric
dampened with water. Wipe droplets
left behind with a clean dry cloth.
If necessary, use a commercial
glass cleaner after cleaning with
plain water.
Caution
To prevent scratching, never use
abrasive cleaners on automotive
glass. Abrasive cleaners or
aggressive cleaning may damage
the rear window defogger.
Cleaning the windshield with water
during the first three to six months
of ownership will reduce tendency
to fog.
Speaker Covers
Vacuum around a speaker cover
gently, so that the speaker will not
be damaged. Clean spots with water
and mild soap.
Coated Moldings
Coated moldings should be cleaned.
. When lightly soiled, wipe with a
sponge or soft, lint-free cloth
dampened with water.
. When heavily soiled, use warm
soapy water.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
382 Service and Maintenance
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories.
.To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary. Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.
Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
. Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0384 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled. Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
406 OnStar
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . . 406
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . . 407
Security . . . . . . . . . . . . . . . . . . . . . . 408
Navigation . . . . . . . . . . . . . . . . . . . . 408
Connections . . . . . . . . . . . . . . . . . . 409
Diagnostics . . . . . . . . . . . . . . . . . . . 411
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . . 412
OnStar Overview
=Voice Command Button
QBlue OnStar Button
>Red Emergency Button
This vehicle may be equipped with a
comprehensive, in-vehicle system
that can connect to an OnStar
Advisor for Emergency, Security,
Navigation, Connections, and
Diagnostics Services. OnStar
services may require a paid service
plan and data plan. OnStar requires
the vehicle battery and electrical
system, cellular service, and GPS
satellite signals to be available and
operating. OnStar acts as a link to
existing emergency service
providers. OnStar may collect information about you and your
vehicle, including location
information. See OnStar User
Terms, Privacy Statement, and
Software Terms for more details
including system limitations at
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
The OnStar system status light is
next to the OnStar buttons. If the
status light is:
.
Solid Green: System is ready.
. Flashing Green: On a call.
. Red: Indicates a problem.
. Off: System is active. Press
Q
twice to speak with an OnStar
Advisor.
Press
Qor call 1-888-4ONSTAR
(1-888-466-7827) to speak to an
Advisor.
Functionality of the Voice Command
button may vary by vehicle and
region.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
418 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 282
Accessory Power . . . . . . . . . . . . . . . 216
Active Fuel Management . . . . . . . 218
Adaptive Cruise Control . . . . . . . . 240
Add-On Electrical Equipment . . . 279
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 412
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 381
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 209
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . 65
Air Cleaner/Filter, Engine . . . . . . . 294
Air Conditioning . . . . . . . . . . . 184, 188
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 190
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 189
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 99
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 92
Passenger Sensing System . . . . 93
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 91 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 92
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 90
Where Are the Airbags? . . . . . . . . 89
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 98
Passenger Status Indicator . . . 145
Readiness Light . . . . . . . . . . . . . . 144
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 98
System Check . . . . . . . . . . . . . . . . . . 87
Alarm Vehicle Security . . . . . . . . . . . . . . . . 51
Alert Lane Change . . . . . . . . . . . . . . . . . 255
Side Blind Zone (SBZA) . . . . . . 254
All-Season Tires . . . . . . . . . . . . . . . . 325
All-Terrain Tires . . . . . . . . . . . . . . . . . 326
Antilock Brake System (ABS) . . . 231 Warning Light . . . . . . . . . . . . . . . . . 148
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 365
Interior . . . . . . . . . . . . . . . . . . . . . . . . 369
Armrest Storage . . . . . . . . . . . . . . . . 122

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Index 419
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 396
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 250
Assistance Systems for Parking and Backing . . . . . . . . . . 248
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 56
Door Locks . . . . . . . . . . . . . . . . . . . . . 44
Forward Braking . . . . . . . . . . . . . . 253
Headlamp System . . . . . . . . . . . . 177
Level Control . . . . . . . . . . . . . . . . . 237
Transmission . . . . . . . . . . . . . . . . . 220
Transmission Fluid . . . . . . 290, 293
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 223
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 307
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 304
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 305
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 182
Load Management . . . . . . . . . . . . 181 Battery (cont'd)
Power Protection . . . . . . . . . . . . . 182
Battery - North America . . . . 303, 356
Blade Replacement, Wiper . . . . . 308
Blind Spot Mirrors . . . . . . . . . . . . . . . 56
Brake Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 209
System Warning Light . . . . . . . . 148
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Antilock . . . . . . . . . . . . . . . . . . . . . . . 231
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 233
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Parking . . . . . . . . . . . . . . . . . . . . . . . 232
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 194 Automatic Forward . . . . . . . . . . . 253
Break-In, New Vehicle . . . . . . . . . . 209
Bulb Replacement Back-up Lamps . . . . . . . . . . . . . . . .311
Fog Lamps . . . . . . . . . . . . . . . . . . . .311
Headlamp Aiming . . . . . . . . . . . . . 310
Headlamps . . . . . . . . . . . . . . . . . . . .311
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . .311
License Plate Lamps . . . . . . . . . 312
Buying New Tires . . . . . . . . . . . . . . . 340
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 129
California Fuel Requirements . . . . . . . . . . . 260
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 282
California Proposition
65 Warning . . . . . . . . . .281, 303, 356, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 389
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 219
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 45
Winter Driving . . . . . . . . . . . . . . . . 202
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 123
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 122
Chains, Tire . . . . . . . . . . . . . . . . . . . . 344
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 132
Charging System Light . . . . . . . . . 145
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 146

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
420 Index
Check (cont'd)Ignition Transmission Lock . . . 307
Child Restraints Infants and Young Children . . . 101
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . 107
Older Children . . . . . . . . . . . . . . . . 100
Securing . . . . . . . . . . . . .115, 117, 118
Systems . . . . . . . . . . . . . . . . . . . . . . 104
Child-View Mirror . . . . . . . . . . . . . . . . 57
Circuit Breakers . . . . . . . . . . . . . . . . 313
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 365
Interior Care . . . . . . . . . . . . . . . . . . 369
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 184
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Cluster, Instrument . . . . . . . . . . . . . 136
Collision Damage Repair . . . . . . . 399
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . 121
Compass . . . . . . . . . . . . . . . . . . . . . . . 129
Connections
OnStar . . . . . . . . . . . . . . . . . . . . . . . 409
Control Hill Descent . . . . . . . . . . . . . . . . . . 236 Control (cont'd)
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 234
Control of a Vehicle . . . . . . . . . . . . . 194
Convenience Net . . . . . . . . . . . . . . . 123
Convex Mirrors . . . . . . . . . . . . . . . . . . 54
Coolant
Engine Temperature Gauge . . 141
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 151
Cooling . . . . . . . . . . . . . . . . . . . . 184, 188
Cooling System . . . . . . . . . . . . . . . . . 295
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 398
Cruise Control . . . . . . . . . . . . . . . . . . 237 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Cruise Control, Adaptive . . . . . . . . 240
Cupholders . . . . . . . . . . . . . . . . . . . . . 121
Customer Assistance . . . . . . . . . . . 395 Offices . . . . . . . . . . . . . . . . . . . . . . . . 394
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 395
Customer Information
Service PublicationsOrdering Information . . . . . . . . 401
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 392D
Damage Repair, Collision . . . . . . . 399
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 405
OnStar . . . . . . . . . . . . . . . . . . . . . . . 405
Data Recorders, Event . . . . . . . . . 404
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 177
Defensive Driving . . . . . . . . . . . . . . . 194
Delayed Locking . . . . . . . . . . . . . . . . . 43
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . .411
Distracted Driving . . . . . . . . . . . . . . . 193
Dome Lamps . . . . . . . . . . . . . . . . . . . 180
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 154
Delayed Locking . . . . . . . . . . . . . . . . 43
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Power Locks . . . . . . . . . . . . . . . . . . . . 43
Drive Belt Routing, Engine . . . . . . 391
Driver Assistance Systems . . . . . 247
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 154
Driving Assistance Systems . . . . . . . . . . 250
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 263