2015 GMC YUKON XL fog light

Black plate (8,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
6-8 Lighting
Battery Load
Management
The vehicle has Electric Power
Management (EPM), which
estimates the battery's temperature
and state of charge. It then adjusts
the voltage for best performance
and extended life of the battery.
When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. The voltmeter
gauge or the voltage display on the
Driver Information Center (DIC),
if equipped, may show the voltage
moving up or down. This is normal.
If there is a problem, an alert will be
displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fastenough at idle to produce all the
power that is needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce
the power demands of some
accessories.
Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a DIC message might
be displayed and it is recommendedthat the driver reduce the electrical
loads as much as possible. See
Battery Voltage and Charging
Messages on page 5-31.
Battery Power Protection
This feature shuts off the dome and
reading lamps if they are left on for
more than 10 minutes when the
ignition is off. This will keep the
battery from running down.

Black plate (3,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
Climate Controls 8-3
Changing the mode cancels the
automatic operation and the system
goes into manual mode. Press
AUTO to return to automatic
operation.
Y(Vent):Air is directed to the
instrument panel outlets.
\(Bi-Level): Air is divided
between the instrument panel and
floor outlets.
[(Floor): Air is directed to the
floor outlets, with some to the
windshield, side window outlets, and
second row floor outlets.
-(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents.
0(Defrost): Press to clear the
windshield of fog or frost more
quickly. Air is directed to the
windshield and the side window
vents. The system automatically
forces outside air into the vehicle and the air conditioning compressor
will run, unless the outside
temperature is close to freezing.
Do not drive the vehicle until all
windows are clear.
See
Air Vents on page 8-6.
A/C (Air Conditioning): Press to
turn the air conditioning system on
or off. An indicator light comes on to
show that the air conditioning is
enabled. If the fan is turned off, the
air conditioner will not run. The A/C
light will stay on even if the outside
temperatures are below freezing.
@(Recirculation): Press to turn
on recirculation. An indicator light
comes on. Air is recirculated to
quickly cool the inside of the
vehicle. It can also be used to help
reduce outside air and odors that
enter the vehicle. The air
conditioning compressor also comes
on when this mode is activated.
Auto Defog: The climate control
system may have a sensor to
automatically detect high humidity inside the vehicle. When high
humidity is detected, the climate
control system may adjust to
outside air supply and turn on the
air conditioner. If the climate control
system does not detect possible
window fogging, it returns to normal
operation. To turn Auto Defog off or
on, see
“Climate and Air Quality”
under Vehicle Personalization on
page 5-44.
Rear Window Defogger
The rear window defogger uses a
warming grid to remove fog from the
rear window.
K(Rear Window Defogger):
Press to turn the rear window
defogger on or off. An indicator light
on the button comes on to show that
the rear window defogger is on.
The rear window defogger only
works when the ignition is in ON/
RUN. The defogger turns off if the
ignition is turned to ACC/
ACCESSORY or LOCK/OFF.

Black plate (92,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
10-92 Vehicle Care
.Never use a brush with stiff
bristles.
.Never rub any surface
aggressively or with excessive
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
leave a residue that creates
streaks and attracts 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.
Commercial glass cleaners may be
used, if necessary, after cleaning
the interior glass 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 just
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.
Fabric/Carpet/Suede
Start by vacuuming the surface
using a soft brush attachment. If a
rotating brush attachment is being
used during vacuuming, only use it
on the floor carpet. Before cleaning,
gently remove as much of the soil
as possible using one of the
following techniques:
.Gently blot liquids with a paper
towel. Continue blotting until no
more soil can be removed.
.For solid soils, remove as much
as possible prior to vacuuming.
To clean:
1. Saturate a clean lint-free colorfast cloth with water.
Microfiber cloth is recommended
to prevent lint transfer to the
fabric or carpet.
2. Remove excess moisture by gently wringing until water does
not drip from the cleaning cloth.

Black plate (4,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
i-4 INDEX
Dual Automatic ClimateControl System . . . . . . . . . . . . . . . . 8-1
E
E85 or FlexFuel . . . . . . . . . . . . . . . 9-71
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . 9-89
Electrical System Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-34
Fuses . . . . . . . . . . . . . . . . . . . . . . 10-33
Instrument Panel Fuse Block . . . . . . . . . 10-38, 10-40
Overload . . . . . . . . . . . . . . . . . . . 10-33
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-43
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2
Engine Air Cleaner/Filter . . . . . . . . . . . 10-13
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-20
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-15
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 5-16 Engine (cont'd)
Cooling System . . . . . . . . . . . . . 10-14
Cooling System Messages . . . 5-33
Drive Belt Routing . . . . . . . . . . . . 12-3
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-30
Fan . . . . . . . . . . . . . . . . . . . . . . . . . 10-19
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Oil Life System . . . . . . . . . . . . . . . 10-9
Oil Messages . . . . . . . . . . . . . . . . . 5-34
Oil Pressure Gauge . . . . . . . . . . 5-15
Overheating . . . . . . . . . . . . . . . . 10-18
Power Messages . . . . . . . . . . . . . 5-35
Running While Parked . . . . . . . . 9-31
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-24
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-7
Equipment, Towing . . . . . . . . . . . . 9-82
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-7
Extender, Safety Belt . . . . . . . . . . 3-27
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . 10-19
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Filter, Engine Air Cleaner . . . . . . . . . 10-13
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-4
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-66 Changing . . . . . . . . . . . . . . . . . . . 10-67
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-71
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-94
Fluid Automatic Transmission . . . . 10-10
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-21
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 9-37
Washer . . . . . . . . . . . . . . . . . . . . . 10-20
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 6-5
Folding Mirrors . . . . . . . . . . . . . . . . 2-29
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . 9-61
Four-Wheel Drive . . . . . . . 9-37, 10-24

Black plate (5,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
INDEX i-5
Frequency StatementRadio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Axle . . . . . . . . . . . . . . . . . . . . 10-24
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Front Seats Heated and Cooled . . . . . . . . . . . . 3-7
Front Turn Signal Lamps . . . . . 10-30
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-69 Additives . . . . . . . . . . . . . . . . . . . . . 9-71
Economy Driving . . . . . . . . . . . . . 1-24
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-73
Filling the Tank . . . . . . . . . . . . . . . 9-72
Foreign Countries . . . . . . . . . . . . 9-71
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Low Fuel Warning Light . . . . . . . 5-26
Management, Active . . . . . . . . . . 9-30
Requirements, California . . . . . 9-70
System Messages . . . . . . . . . . . . 5-35
Full-Size Spare Tire . . . . . . . . . . 10-77 Fuses . . . . . . . . . . . . . . . . . . . . . . . . 10-33
Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-34
Instrument Panel Fuse Block . . . . . . . . . 10-38, 10-40
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-43
G
Garage Door Opener . . . . . . . . . . 5-52
Programming . . . . . . . . . . . . . . . . . 5-52
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 5-16
Engine Oil Pressure . . . . . . . . . . 5-15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Odometer . . . . . . . . . . . . . . . . . . . . . 5-13
Speedometer . . . . . . . . . . . . . . . . . 5-13
Tachometer . . . . . . . . . . . . . . . . . . . 5-13
Trip Odometer . . . . . . . . . . . . . . . . 5-13
Voltmeter . . . . . . . . . . . . . . . . . . . . . 5-16
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 5-10 General Information
Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-74
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glass Replacement . . . . . . . . . . . 10-29
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-5H
Hazard Warning Flashers . . . . . . . 6-4
Head Restraints . . . . . . . . . . . . . . . . 3-2
Headlamps . . . . . . . . . . . . . . . . . . . 10-30Aiming . . . . . . . . . . . . . . . . . . . . . . 10-29
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-3
Bulb Replacement . . . . . . . . . . 10-30
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-30
High-Beam On Light . . . . . . . . . . 5-26
High/Low Beam Changer . . . . . . 6-2
Lamps On Reminder . . . . . . . . . 5-27

Black plate (6,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
i-6 INDEX
HeatedRear Seats . . . . . . . . . . . . . . . . . . . . 3-9
Steering Wheel . . . . . . . . . . . . . . . . 5-3
Heated and Cooled Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Heated Mirrors . . . . . . . . . . . . . . . . . 2-30
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 9-26
High-Beam On Light . . . . . . . . . . . 5-26
High-Speed Operation . . . . . . . . 10-53
Hill and Mountain Roads . . . . . . . 9-11
Hill Start Assist (HSA) . . . . . . . . . 9-43
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . 3-20
I
Ignition Positions . . . . . . . . 9-20, 9-22
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . 10-27
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-26
Indicator Vehicle Ahead . . . . . . . . . . . . . . . . 5-24
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-44 Infotainment . . . . . . . . . . . . . . . . . . . . 7-1
Infotainment System . . . . . . . . . . 13-15
Instrument Cluster . . . . . . . . . . . . . 5-11
Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . . 4-1
Interior Rearview Mirrors . . . . . . . 2-31
Introduction . . . . . . . . . . . . . . . . . . . . . . . iii
J
Jump Starting . . . . . . . . . . . . . . . . . 10-78
K
Key and Lock Messages . . . . . . . 5-35
Keyless Entry Remote (RKE) System . . . 2-5, 2-8
Keys . . . . . . . . . . . . . . . . . . . . . . . . 2-2, 2-4
L
Labeling, Tire Sidewall . . . . . . . . 10-46
Lamps
Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-2 Lamps (cont'd)
Fog . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Front Turn Signal . . . . . . . . . . . 10-30
License Plate . . . . . . . . . . . . . . . 10-32
Malfunction Indicator . . . . . . . . . 5-20
Messages . . . . . . . . . . . . . . . . . . . . 5-36
On Reminder . . . . . . . . . . . . . . . . . 5-27
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-6
Lane Change Alert . . . . . . . . . . . . 9-66
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . 9-68
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 3-26
Lap-Shoulder Belt . . . . . . . . . . . . . 3-21
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-59
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . 3-50
LED Lighting . . . . . . . . . . . . . . . . . . 10-30
Level Control Automatic . . . . . . . . . . . . . . . . . . . . . 9-47
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Black plate (7,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
INDEX i-7
LightingEntry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Illumination Control . . . . . . . . . . . . 6-6
LED . . . . . . . . . . . . . . . . . . . . . . . . 10-30
Lights Airbag Readiness . . . . . . . . . . . . . 5-18
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-23
Brake System Warning . . . . . . . 5-22
Charging System . . . . . . . . . . . . . 5-19
Cruise Control . . . . . . . . . . . . . . . . 5-27
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Front Fog Lamp . . . . . . . . . . . . . . 5-27
High-Beam On . . . . . . . . . . . . . . . . 5-26
High/Low Beam Changer . . . . . . 6-2
Lane Departure Warning . . . . . . 5-24
Low Fuel Warning . . . . . . . . . . . . 5-26
Safety Belt Reminders . . . . . . . . 5-17
Security . . . . . . . . . . . . . . . . . . . . . . 5-26
StabiliTrak
®OFF . . . . . . . . . . . . . 5-25
Tire Pressure . . . . . . . . . . . . . . . . . 5-25
Tow/Haul Mode . . . . . . . . . . . . . . . 5-24
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-25
Traction Off . . . . . . . . . . . . . . . . . . . 5-24 Locking Rear Axle . . . . . . . . . . . . . 9-46
Locks
Automatic Door . . . . . . . . . . . . . . . 2-18
Delayed Locking . . . . . . . . . . . . . . 2-18
Door . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Lockout Protection . . . . . . . . . . . . 2-18
Power Door . . . . . . . . . . . . . . . . . . . 2-17
Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Low Fuel Warning Light . . . . . . . . 5-26
Low-Profile Tires . . . . . . . . . . . . . . 10-46
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-50
Lumbar Adjustment . . . . . . . . . . . . . 3-4 Front Seats . . . . . . . . . . . . . . . . . . . . 3-4
M
Magnetic Ride Control . . . . . . . . . 9-46
Maintenance
Records . . . . . . . . . . . . . . . . . . . . .11-15
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 11-9 Maintenance Schedule . . . . . . . . 11-2
Recommended Fluids
and Lubricants . . . . . . . . . . . . .11-12
Transfer Case . . . . . . . . . . . . . . . . 9-37
Malfunction Indicator Lamp . . . . 5-20
Manual Mode . . . . . . . . . . . . . . . . . . 9-34
Memory Features . . . . . . . . . . . . . . . 1-8
Memory Seats . . . . . . . . . . . . . . . . . . 3-5
Messages Airbag System . . . . . . . . . . . . . . . . 5-39
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 5-31
Brake System . . . . . . . . . . . . . . . . 5-32
Compass . . . . . . . . . . . . . . . . . . . . . 5-32
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-33
Engine Cooling System . . . . . . . 5-33
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-34
Engine Power . . . . . . . . . . . . . . . . 5-35
Fuel System . . . . . . . . . . . . . . . . . . 5-35
Key and Lock . . . . . . . . . . . . . . . . . 5-35
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
Object Detection System . . . . . 5-36
Ride Control System . . . . . . . . . . 5-38
Security . . . . . . . . . . . . . . . . . . . . . . 5-39
Steering System . . . . . . . . . . . . . . 5-40
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40