2017 GMC YUKON XL lane assist

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
262 Driving and Operating
Warning (Continued)
The LKA and LDW systems
may not:. Provide an alert or enough
steering assist to avoid a
lane departure or crash.
. Detect lane markings under
poor weather or visibility
conditions. This can occur if
the windshield or
headlamps are blocked by
dirt, snow, or ice, if they are
not in proper condition, or if
the sun shines directly into
the camera.
. Detect road edges.
. Detect lanes on winding or
hilly roads.
If LKA only detects lane markings
on one side of the road, it will
only assist or provide an LDW
alert when approaching the lane
on the side where it has detected
a lane marking. Even with LKA
and LDW, you must steer the (Continued)
Warning (Continued)
vehicle. Always keep your
attention on the road and
maintain proper vehicle position
within the lane, or vehicle
damage, injury, or death could
occur. Always keep the
windshield, headlamps, and
camera sensors clean and in
good repair. Do not use LKA in
bad weather conditions.
{Warning
Using LKA while towing a trailer
or on slippery roads could cause
loss of control of the vehicle and
a crash. Turn the system off.
How the System Works
The LKA camera sensor is on the
windshield ahead of the rearview
mirror.
To turn LKA on and off, press
A
to the left of the steering wheel. When on,
Ais green if LKA is
available to assist and provide LDW
alerts. It may assist by gently
turning the steering wheel and
display
Aas amber if the vehicle
approaches a detected lane marking
without using a turn signal in that
direction. It may also provide an
LDW alert by flashing
Aamber
as the lane marking is crossed.
Additionally, there will be three
beeps, or the driver seat will pulse
three times, on the right or left,
depending on the lane departure
direction.
The LKA system does not
continuously steer the vehicle.
If LKA does not detect active driver
steering, an alert and chime may be
provided. Steer the vehicle to
dismiss.
When the System Does Not
Seem to Work Properly
The system performance may be
affected by:
. Close vehicles ahead.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Driving and Operating 263
.Sudden lighting changes, such
as when driving through tunnels.
. Banked roads.
. Roads with poor lane markings,
such as two-lane roads.
If the LKA system is not functioning
properly when lane markings are
clearly visible, cleaning the
windshield may help.
LKA assistance and/or LDW alerts
may occur due to tar marks,
shadows, cracks in the road,
temporary or construction lane
markings, or other road
imperfections. This is normal system
operation; the vehicle does not need
service. Turn LKA off if these
conditions continue.Fuel
GM recommends the use of TOP
TIER®detergent gasoline to keep
the engine cleaner and reduce
engine deposits. See
www.toptiergas.com for a list of TOP
TIER detergent gasoline marketers
and applicable countries.
If the vehicle has a yellow sticker on
the fuel door, E85 or FlexFuel can
be used. See E85 or
FlexFuel 0265.
For the L83 5.3L V8 engine, use
regular unleaded gasoline meeting
ASTM specification D4814 with a
posted octane rating of 87 or higher. Do not use gasoline with a posted
octane rating of less than 87, as this
may cause engine knock and will
lower fuel economy.
For the L86 6.2L V8 engine,
premium unleaded gasoline meeting
ASTM specification D4814 with a
posted octane rating of 93 is highly
recommended for best performance
and fuel economy. Unleaded
gasoline with an octane rated as low
as 87 can be used. Using unleaded
gasoline rated below 93 octane,
however, will lead to reduced
acceleration and fuel economy.
If knocking occurs, use a gasoline
rated at 93 octane as soon as
possible, otherwise, the engine
could be damaged. If heavy
knocking is heard when using
gasoline with a 93 octane rating, the
engine needs service.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
420 Index
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Heated Mirrors . . . . . . . . . . . . . . . . . . . 55
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 222
Heating . . . . . . . . . . . . . . . . . . . . 191, 195
High-Beam On Light . . . . . . . . . . . . 150
High-Speed Operation . . . . . . . . . . 334
Hill and Mountain Roads . . . . . . . . 209
Hill Start Assist (HSA) . . . . . . . . . . 238
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 78
HVAC . . . . . . . . . . . . . . . . . . . . . . 191, 195
I
Ignition Positions . . . . . . . . . . 217, 219
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . . . 310
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 52
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 147
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . 100
Infotainment . . . . . . . . . . . . . . . . . . . . 190
Infotainment System . . . . . . . . . . . . 404
Instrument Cluster . . . . . . . . . . . . . . 134 Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . 120
Interior Rearview Mirrors . . . . . . . . . 57
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 357
K
Key and Lock Messages . . . . . . . . 162
Keyless EntryRemote (RKE) System . . . . . 32, 34
Keys . . . . . . . . . . . . . . . . . . . . . . . . . 28, 31
L
Labeling, Tire Sidewall . . . . . . . . . . 328
Lamps Daytime Running (DRL) . . . . . . 184
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 187
Exterior Controls . . . . . . . . . . . . . . 181
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 183
License Plate . . . . . . . . . . . . . . . . . 314
Malfunction Indicator . . . . . . . . . 144
Messages . . . . . . . . . . . . . . . . . . . . 163
On Reminder . . . . . . . . . . . . . . . . . 151 Lamps (cont'd)
Reading . . . . . . . . . . . . . . . . . . . . . . 187
Lane Change Alert (LCA) . . . . . . . 259
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 261
Lane Keep Assist (LKA) . . . . . . . . 261
Lane Keep Assist Light . . . . . . . . . 147
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 84
Lap-Shoulder Belt . . . . . . . . . . . . . . . 79
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . .113
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . 105
LED Lighting . . . . . . . . . . . . . . . . . . . . 313
Level Control Automatic . . . . . . . . . . . . . . . . . . . . . 241
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 188
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Illumination Control . . . . . . . . . . . 186
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Airbag Readiness . . . . . . . . . . . . . 142
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 146
Brake System Warning . . . . . . . 145

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
424 Index
SeatsHead Restraints . . . . . . . . . . . . . . . . 63
Heated and Ventilated Front . . . . 68
Heated, Rear . . . . . . . . . . . . . . . . . . . 70
Lumbar Adjustment, Front . . . . . . 65
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 66
Power Adjustment, Front . . . . . . . 64
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Reclining Seatbacks . . . . . . . . . . . . 65
Second Row . . . . . . . . . . . . . . . . . . . . 70
Third Row Seat . . . . . . . . . . . . . . . . . 75
Second Row Seats . . . . . . . . . . . . . . 70
Securing Child Restraints . . . . . . . . . . . . . . . . 113, 116
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Messages . . . . . . . . . . . . . . . . . . . . 166
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 406
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 50
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 50
Service . . . . . . . . . . . . . . . . . . . . . . . . . 198
Accessories andModifications . . . . . . . . . . . . . . . . 285
Doing Your Own Work . . . . . . . . 285
Engine Soon Light . . . . . . . . . . . . 144
Maintenance Records . . . . . . . . 387
Maintenance, General Information . . . . . . . . . . . . . . . . . . 374 Service (cont'd)
Parts Identification Label . . . . . 388
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 400
Scheduling Appointments . . . . . 397
Services Special Application . . . . . . . . . . . 381
Servicing the Airbag . . . . . . . . . . . . . 96
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 310
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 224
Out of Park . . . . . . . . . . . . . . . . . . . 225
Side Blind Zone Alert (SBZA) . . . 259
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 185
Special Application Services . . . . 381
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 389
Speedometer . . . . . . . . . . . . . . . . . . . 137
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 148
Start Assist, Hill . . . . . . . . . . . . . . . . . 238
Start Vehicle, Remote . . . . . . . . . . . 40
Starter Switch Check . . . . . . . . . . . 309
Starting the Engine . . . . . . . . . . . . . 220 Starting the Vehicle
Messages . . . . . . . . . . . . . . . . . . . . . 167
Steering . . . . . . . . . . . . . . . . . . . . . . . . 202 Heated Wheel . . . . . . . . . . . . . . . . 125
Wheel Adjustment . . . . . . . . . . . . 125
Wheel Controls . . . . . . . . . . . . . . . 125
Steering System Messages . . . . . 166
Steps
Power Assist . . . . . . . . . . . . . . . . . . . 49
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . 121
Center Console . . . . . . . . . . . . . . . 121
Convenience Net . . . . . . . . . . . . . 122
Glove Box . . . . . . . . . . . . . . . . . . . . 120
Instrument Panel . . . . . . . . . . . . . 120
Roof Rack System . . . . . . . . . . . . 122
Sunglasses . . . . . . . . . . . . . . . . . . . 121
Storage Compartments . . . . . . . . . 120
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 211
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 59
Sunglass Storage . . . . . . . . . . . . . . . 121
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 255

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
Index 425
System (cont'd)Infotainment . . . . . . . . . . . . . 190, 404
Noise Control . . . . . . . . . . . . . . . . . 308
Roof Rack . . . . . . . . . . . . . . . . . . . . 122
Systems Driver Assistance . . . . . . . . . . . . . 251
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 137
Text Telephone (TTY) Users . . . . 394
Theft-Deterrent Systems . . . . . 52, 53Immobilizer . . . . . . . . . . . . . . . . . . . . . 52
Third-Row Seats . . . . . . . . . . . . . . . . . 75
Throttle, Adjustable . . . . . . . . . . . . . 216
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326 All-Season . . . . . . . . . . . . . . . . . . . . 327
All-Terrain . . . . . . . . . . . . . . . . . . . . 328
Buying New Tires . . . . . . . . . . . . . 341
Chains . . . . . . . . . . . . . . . . . . . . . . . . 345
Changing . . . . . . . . . . . . . . . . . . . . . 347
Designations . . . . . . . . . . . . . . . . . 330
Different Size . . . . . . . . . . . . . . . . . 342
Full-Size Spare . . . . . . . . . . . . . . . 356
If a Tire Goes Flat . . . . . . . . . . . . 346
Inspection . . . . . . . . . . . . . . . . . . . . 339
Low Profile . . . . . . . . . . . . . . . . . . . 328
Messages . . . . . . . . . . . . . . . . . . . . 167
Pressure . . . . . . . . . . . . . . . . . 333, 334 Tires (cont'd)
Pressure Light . . . . . . . . . . . . . . . . 149
Pressure Monitor Operation . . 336
Pressure Monitor System . . . . . 335
Rotation . . . . . . . . . . . . . . . . . . . . . . 339
Sidewall Labeling . . . . . . . . . . . . . 328
Terminology and Definitions . . 330
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 343
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 344
Wheel Replacement . . . . . . . . . . 344
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 340
Winter . . . . . . . . . . . . . . . . . . . . . . . . 327
Tow/Haul Mode . . . . . . . . . . . . . . . . . 232
Tow/Haul Mode Light . . . . . . . . . . . 147
Towing Driving Characteristics . . . . . . . . 268
Equipment . . . . . . . . . . . . . . . . . . . . 274
General Information . . . . . . . . . . 268
Recreational Vehicle . . . . . . . . . . 361
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 271
Trailer Sway Control (TSC) . . . 281
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 360
Traction Control System (TCS)/StabiliTrak
®Light . . . . . . . . . . . . 148 Traction (cont'd)
Off Light . . . . . . . . . . . . . . . . . . . . . . 147
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 239
Trailer Sway Control (TSC) . . . . . . . . . . 281
Towing . . . . . . . . . . . . . . . . . . . . . . . . 271
Transfer Case . . . . . . . . . . . . . . . . . . 233
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 227
Fluid, Automatic . . . . . . . . . 293, 296
Messages . . . . . . . . . . . . . . . . . . . . 167
Temperature Gauge . . . . . . . . . . 140
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 397
Trip Odometer . . . . . . . . . . . . . . . . . . 137
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 185
U
Uniform Tire Quality Grading . . . 343
Universal Remote System . . . . . . 177
Operation . . . . . . . . . . . . . . . . . . . . . 180
Programming . . . . . . . . . . . . . . . . . 177
Using This Manual . . . . . . . . . . . . . . . . 2