
GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
188 Lighting
Lighting Features
Entry Lighting
Some exterior lamps and the interior
lamps turn on briefly at night, or in
areas with limited lighting, when
K
is pressed on the Remote Keyless
Entry (RKE) transmitter. When a
door is opened, the interior lamps
come on if the dome lamp control is
in the DOOR position. After about
30 seconds the exterior lamps turn
off. Entry lighting can be disabled
manually by changing the ignition
out of the OFF position, or by
pressing the RKE transmitter
Q
button.
This feature can be changed. See
“Vehicle Locator Lights”under
Vehicle Personalization 0170.
Exit Lighting
Some exterior lamps and interior
lamps come on at night, or in areas
with limited lighting, when the driver
door is opened after the ignition is
turned off. The exterior lamps and interior lamps remain on for a set
amount of time, then automatically
turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization
0170.
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 fast
enough 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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Lighting 189
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 recommended
that the driver reduce the electrical
loads as much as possible. See
Battery Voltage and Charging
Messages0158.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Driving and Operating 225
Torque Lock
If you are parking on a hill and you
do not shift the transmission into
P (Park) properly, the weight of the
vehicle may put too much force on
the parking pawl in the
transmission. You may find it difficult
to pull the shift lever out of P (Park).
This is called torque lock. To
prevent torque lock, set the parking
brake and then shift into P (Park)
properly before you leave the driver
seat. To find out how, seeShifting
Into Park 0224.
When you are ready to drive, move
the shift lever out of P (Park) before
you release the parking brake.
If torque lock does occur, you may
need to have another vehicle push
yours a little uphill to take some of
the pressure from the parking pawl
in the transmission. You will then be
able to pull the shift lever out of
P (Park).
Shifting out of Park
This vehicle is equipped with an
electronic shift lock release system.
The shift lock release is
designed to:
. Prevent ignition key removal
unless the shift lever is in
P (Park).
. Prevent movement of the shift
lever out of P (Park), unless the
ignition is in ON/RUN and the
regular brake pedal is applied.
The shift lock release is always
functional except in the case of an
uncharged or low voltage (less than
9 volt) battery.
If the vehicle has an uncharged
battery or a battery with low voltage,
try charging or jump starting the
battery. See Jump Starting - North
America 0357.
To shift out of P (Park): 1. Apply the brake pedal.
2. Move the shift lever to the desired position. If you still are unable to shift out of
P (Park):
1. Ease the pressure on the shift lever.
2. While holding down the brake pedal, press the shift lever all
the way into P (Park).
3. Move the shift lever to the desired position.
If you are still having a problem
shifting, then have the vehicle
serviced soon.
Parking over Things
That Burn
{Warning
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
416 Index
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 395
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 255
Assistance Systems for Parking and Backing . . . . . . . . . . 252
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 55
Door Locks . . . . . . . . . . . . . . . . . . . . . 43
Forward Braking . . . . . . . . . . . . . . 257
Headlamp System . . . . . . . . . . . . 184
Level Control . . . . . . . . . . . . . . . . . 241
Transmission . . . . . . . . . . . . . . . . . 227
Transmission Fluid . . . . . . 293, 296
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 230
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 310
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 307
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 308
B
Battery Load Management . . . . . . . . . . . . 188
Power Protection . . . . . . . . . . . . . 189
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 158 Battery - North America . . . . 306, 357
Blade Replacement, Wiper . . . . . 311
Blind Spot Mirrors . . . . . . . . . . . . . . . 55
Brake
Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 216
System Warning Light . . . . . . . . 145
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Antilock . . . . . . . . . . . . . . . . . . . . . . . 237
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 238
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Parking . . . . . . . . . . . . . . . . . . . . . . . 237
System Messages . . . . . . . . . . . . 159
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 201 Automatic Forward . . . . . . . . . . . 257
Break-In, New Vehicle . . . . . . . . . . 216
Bulb Replacement . . . . . . . . . . . . . . 315
Back-up Lamps . . . . . . . . . . . . . . . 313
Fog Lamps . . . . . . . . . . . . . . . . . . . 313
Headlamp Aiming . . . . . . . . . . . . . 312
Headlamps . . . . . . . . . . . . . . . . . . . 313
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 313
License Plate Lamps . . . . . . . . . 314
Buying New Tires . . . . . . . . . . . . . . . 341
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 128
California
Fuel Requirements . . . . . . . . . . . 264
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 284
California Proposition
65 Warning . . . . . . . . . .284, 306, 357
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 389
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 226
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 44
Winter Driving . . . . . . . . . . . . . . . . 209
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 122
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 121
Chains, Tire . . . . . . . . . . . . . . . . . . . . 345
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 132
Charging System Light . . . . . . . . . 143
Check
Ignition Transmission Lock . . . 310
Malfunction IndicatorEngine Light . . . . . . . . . . . . . . . . 144

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Index 421
Lights (cont'd)Charging System . . . . . . . . . . . . . 143
Cruise Control . . . . . . . . . . . . . . . . 151
Door Ajar . . . . . . . . . . . . . . . . . . . . . 151
Engine Coolant
Temperature Warning . . . . . . . 148
Engine Oil Pressure . . . . . . . . . . 149
Flash-to-Pass . . . . . . . . . . . . . . . . . 183
Four-Wheel-Drive . . . . . . . . . . . . . 146
Front Fog Lamp . . . . . . . . . . . . . . 151
High-Beam On . . . . . . . . . . . . . . . . 150
High/Low Beam Changer . . . . . 183
Low Fuel Warning . . . . . . . . . . . . 150
Safety Belt Reminders . . . . . . . . 141
Security . . . . . . . . . . . . . . . . . . . . . . 150
StabiliTrak
®OFF . . . . . . . . . . . . . 148
Tire Pressure . . . . . . . . . . . . . . . . . 149
Tow/Haul Mode . . . . . . . . . . . . . . . 147
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 148
Traction Off . . . . . . . . . . . . . . . . . . . 147
Locking Rear Axle . . . . . . . . . . . . . . 241
Locks Automatic Door . . . . . . . . . . . . . . . . . 43
Delayed Locking . . . . . . . . . . . . . . . . 43
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Lockout Protection . . . . . . . . . . . . . . 43
Power Door . . . . . . . . . . . . . . . . . . . . . 42 Locks (cont'd)
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Loss of Control . . . . . . . . . . . . . . . . . 203
Low Fuel Warning Light . . . . . . . . . 150
Low-Profile Tires . . . . . . . . . . . . . . . . 328
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 105
Lumbar Adjustment . . . . . . . . . . . . . . 65
Front Seats . . . . . . . . . . . . . . . . . . . . . 65
M
Magnetic Ride Control . . . . . . . . . . 241
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 387
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 381
Maintenance Schedule . . . . . . . . . 375 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 384
Transfer Case . . . . . . . . . . . . . . . . 233
Malfunction Indicator Lamp . . . . . 144
Manual Mode . . . . . . . . . . . . . . . . . . . 230
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 66
Messages Airbag System . . . . . . . . . . . . . . . . 166
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 158 Messages (cont'd)
Brake System . . . . . . . . . . . . . . . . 159
Compass . . . . . . . . . . . . . . . . . . . . . 159
Door Ajar . . . . . . . . . . . . . . . . . . . . . 160
Engine Cooling System . . . . . . . 161
Engine Oil . . . . . . . . . . . . . . . . . . . . 161
Engine Power . . . . . . . . . . . . . . . . 162
Fuel System . . . . . . . . . . . . . . . . . . 162
Key and Lock . . . . . . . . . . . . . . . . . 162
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 163
Object Detection System . . . . . 163
Ride Control System . . . . . . . . . . 165
Security . . . . . . . . . . . . . . . . . . . . . . 166
Starting the Vehicle . . . . . . . . . . . 167
Steering System . . . . . . . . . . . . . . 166
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Transmission . . . . . . . . . . . . . . . . . 167
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 158
Vehicle Reminder . . . . . . . . . . . . . 169
Washer Fluid . . . . . . . . . . . . . . . . . 170
Mirror Child-View . . . . . . . . . . . . . . . . . . . . . . 57
Mirrors
Automatic Dimming . . . . . . . . . . . . . 55
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 57
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 55
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 54

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
426 Index
V
VehicleAlarm System . . . . . . . . . . . . . . . . . . 50
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 201
Identification Number (VIN) . . . 388
Load Limits . . . . . . . . . . . . . . . . . . . 212
Messages . . . . . . . . . . . . . . . . . . . . 158
Personalization . . . . . . . . . . . . . . . 170
Reminder Messages . . . . . . . . . . 169
Remote Start . . . . . . . . . . . . . . . . . . . 40
Security . . . . . . . . . . . . . . . . . . . . . . . . 50
Towing . . . . . . . . . . . . . . . . . . . . . . . . 360
Vehicle Ahead Indicator . . . . . . . . 147
Vehicle Care
Tire Pressure . . . . . . . . . . . . . . . . . 333
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 402
Ventilation, Air . . . . . . . . . . . . . . . . . . 196
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Voltmeter Gauge . . . . . . . . . . . . . . . 140
W
Warning
Brake System Light . . . . . . . . . . . 145
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 261
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 133 Warnings
Hazard Flashers . . . . . . . . . . . . . . 185
Washer Fluid . . . . . . . . . . . . . . . . . . . 303 Messages . . . . . . . . . . . . . . . . . . . . 170
Wheels Alignment and Tire Balance . . 344
Different Size . . . . . . . . . . . . . . . . . 342
Replacement . . . . . . . . . . . . . . . . . 344
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Where to Put the Restraint . . . . . 104
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Windows . . . . . . . . . . . . . . . . . . . . . . . . 57
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Windshield Replacement . . . . . . . . . . . . . . . . . 312
Wiper/Washer . . . . . . . . . . . . . . . . 126
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 209
Winter Tires . . . . . . . . . . . . . . . . . . . . 327
Wiper Blade Replacement . . . . . . 311
Wipers Rear Washer . . . . . . . . . . . . . . . . . 128
Wireless Charging . . . . . . . . . . . . . . 132