2019 GMC YUKON warning lights

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
Driving and Operating 235
{Warning
Shifting the transfer case to
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or someone else
could be seriously injured. Be
sure to set the parking brake
before placing the transfer case in
N (Neutral). SeeParking Brake
0 240.
Caution
Extended high-speed operation in
4
nmay damage or shorten the
life of the drivetrain.
Engagement noise and bump when
shifting between 4
nand 4mor from
N (Neutral), with the engine running,
is normal. Shifting into 4
nwill turn Traction
Control and StabiliTrak/Electronic
Stability Control off. See Traction
Control/Electronic Stability Control
0 242.
Two Speed Automatic
Transfer Case
If equipped, use the transfer case
knob next to the steering wheel to
shift into and out of four-wheel drive.
All of the lights will blink on then off
momentarily when the ignition
turned on. The light that remains on
will indicate the state of the
transfer case. If the indicator mark on the switch
does not match up with the light
then that likely means the switch
was moved when the ignition
was off.
The indicator mark on the switch
must line up with the indicator light
before a shift can be commanded.
To command a shift rotate the
transfer case switch to the new
desired position. The light will blink
meaning that the shift is in progress.
When the shift is completed the new
position will be illuminated. If the
transfer case cannot complete a
shift command, it will go back to its
last chosen setting.
The settings are:
N (Neutral) :
Use only when the
vehicle needs to be towed.
See Recreational Vehicle Towing
0 378 orTowing the Vehicle 0378.
2
m(Two-Wheel Drive High) : Use
for driving on most streets and
highways. The front axle is not
engaged. This setting provides the
best fuel economy.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
252 Driving and Operating
Approaching and Following a
Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD,
if equipped.
The vehicle ahead indicator only
displays when a vehicle is detected
in your vehicle’s path moving in the
same direction.
If this indicator is not displaying,
ACC will not respond to or brake to
vehicles ahead.
ACC automatically slows the vehicle
down and adjusts vehicle speed to
follow the vehicle in front at the
selected follow gap. The vehicle
speed increases or decreases to
follow the vehicle in front of you, but
will not exceed the set speed. It may
apply limited braking, if necessary.
When braking is active, the brakelights will come on. The automatic
braking may feel or sound different
than if the brakes were applied
manually. This is normal.
Stationary or Very Slow-Moving
Objects
{Warning
ACC may not detect and react to
stopped or slow-moving vehicles
ahead of you. For example, the
system may not brake for a
vehicle it has never detected
moving. This can occur in
stop-and-go traffic or when a
vehicle suddenly appears due to
a vehicle ahead changing lanes.
Your vehicle may not stop and
could cause a crash. Use caution
when using ACC. Your complete
attention is always required while
driving and you should be ready
to take action and apply the
brakes.
ACC Automatically Disengages
ACC may automatically disengage
and you will need to manually apply
the brakes to slow the vehicle if:
.
Your vehicle speed goes below
the minimum speed of 16 km/h
(10 mph).
. The sensors are blocked.
. The Traction Control System
(TCS) or electronic stability
control system has activated or
been disabled.
. There is a fault in the system.
. The radar falsely reports a
blockage when driving in a
desert or remote area with no
other vehicles or roadside
objects. A DIC message may
display to indicate that ACC is
temporarily unavailable.
A message will appear on the DIC
indicating that cruise is disengaging.
The ACC indicator will turn white
when ACC is no longer active.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
260 Driving and Operating
Assist to work properly with an
attached trailer hitch. Turn off Park
Assist when towing a trailer.
To turn the RPA symbols, guidance
lines, or Rear Cross Traffic Alert on
or off, see“Rear Camera” and
“Collision/Detection Systems” under
Vehicle Personalization 0169. On
some models, select the guidance
lines button on the infotainment
display to turn them on or off.
Assistance Systems for
Driving
If equipped, when driving the
vehicle in a forward gear, Forward
Collision Alert (FCA), Lane
Departure Warning (LDW), Lane
Keep Assist (LKA), Side Blind Zone
Alert (SBZA), Lane Change Alert
(LCA), and/or Forward Automatic
Braking (FAB) can help to avoid a
crash or reduce crash damage.
Forward Collision Alert
(FCA) System
If equipped, the FCA system may
help to avoid or reduce the harm
caused by front-end crashes. When
approaching a vehicle ahead too
quickly, FCA provides a red flashing
alert on the windshield and rapidly
beeps or pulses the driver seat.
FCA also lights an amber visual
alert if following another vehicle
much too closely.
FCA detects vehicles within a
distance of approximately 60 m
(197 ft) and operates at speeds
above 8 km/h (5 mph). If the vehicle
has Adaptive Cruise Control (ACC),
it can detect vehicles to distances of
approximately 110 m (360 ft) and
operates at all speeds. See
Adaptive Cruise Control 0248.
{Warning
FCA is a warning system and
does not apply the brakes. When
approaching a slower-moving or
(Continued)
Warning (Continued)
stopped vehicle ahead too rapidly,
or when following a vehicle too
closely, FCA may not provide a
warning with enough time to help
avoid a crash. It also may not
provide any warning at all. FCA
does not warn of pedestrians,
animals, signs, guardrails,
bridges, construction barrels,
or other objects. Be ready to take
action and apply the brakes. See
Defensive Driving0201.
FCA can be disabled with either the
FCA steering wheel control or,
if equipped, through vehicle
personalization. See “Collision/
Detection Systems” underVehicle
Personalization 0169.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-12460267) - 2019 - crc - 9/11/18
Driving and Operating 265
LCA Detection Zones
1. SBZA Detection Zone
2. LCA Detection Zone
The LCA sensor covers a zone of
approximately one lane over from
both sides of the vehicle, or 3.5 m
(11 ft). The height of the zone is
approximately between 0.5 m (1.5 ft)
and 2 m (6 ft) off the ground. The
Side Blind Zone Alert (SBZA)
warning area starts at approximately
the middle of the vehicle and goes
back 5 m (16 ft). Drivers are also
warned of vehicles rapidly
approaching from up to 70 m (230 ft)
behind the vehicle.
How the System Works
The LCA symbol lights up in the
outside mirrors when the system
detects a moving vehicle in the next
lane over that is in the side blind
zone or rapidly approaching that
zone from behind. A lit LCA symbol
indicates it may be unsafe to
change lanes. Before making a lane
change, check the LCA display,
check mirrors, glance over your
shoulder, and use the turn signals.
Left Outside
Mirror DisplayRight Outside
Mirror Display
When the vehicle is started, both
outside mirror LCA displays will
briefly come on to indicate the
system is operating. When the
vehicle is in a forward gear, the left
or right outside mirror display will
light up if a moving vehicle is
detected in the next lane over in that blind zone or rapidly approaching
that zone. If the turn signal is
activated in the same direction as a
detected vehicle, this display will
flash as an extra warning not to
change lanes.
LCA can be disabled through
vehicle personalization. When you
disable LCA, Side Blind Zone Alert
is also disabled. See
“Collision/
Detection Systems” underVehicle
Personalization 0169. If LCA is
disabled by the driver, the LCA
mirror displays will not light up.
When the System Does Not
Seem to Work Properly
The LCA system requires some
driving for the system to calibrate to
maximum performance. This
calibration may occur more quickly if
the vehicle is driving on a straight
highway road with traffic and
roadside objects (e.g., guardrails,
barriers).
LCA displays may not come on
when passing a vehicle quickly, for
a stopped vehicle, or when towing a
trailer. The LCA detection zones

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
Index 441
FluidAutomatic
Transmission . . . . . . . . . . . 305, 308
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 317
Four-Wheel Drive Transfer Case . . . . . . . . . . . . . . . 234
Washer . . . . . . . . . . . . . . . . . . . . . . . 315
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 186 Bulb Replacement . . . . . . . . . . . . 326
Folding Mirrors . . . . . . . . . . . . . . . . . . 57
Forward Automatic Braking . . . . . 262
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 260
Four-Wheel Drive . . . . . . . . . . 234, 318
Four-Wheel-Drive Light . . . . . . . . . 156
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 421
Front Axle . . . . . . . . . . . . . . . . . . . . . . 319
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Front Seats
Heated and Ventilated . . . . . . . . . . 72
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 270
Economy Driving . . . . . . . . . . . . . . . 27
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 272
Filling the Tank . . . . . . . . . . . . . . . 271 Fuel (cont'd)
Foreign Countries . . . . . . . . . . . . 270
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 147
Low Fuel Warning Light . . . . . . . 159
Management, Active . . . . . . . . . . 226
Prohibited Fuels . . . . . . . . . . . . . . 269
Recommended . . . . . . . . . . . . . . . 269
Top Tier . . . . . . . . . . . . . . . . . . . . . . 268
Full-Size Spare Tire . . . . . . . . . . . . 373
Fuses
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 330
Fuses and Circuit Breakers . . . 329
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 334, 337
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 339
G
Garage Door Opener . . . . . . . . . . . 177Programming . . . . . . . . . . . . . . . . . 177
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 324
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 148
Engine Oil Pressure . . . . . . . . . . 147
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Odometer . . . . . . . . . . . . . . . . . . . . . 146 Gauges (cont'd)
Speedometer . . . . . . . . . . . . . . . . . 146
Tachometer . . . . . . . . . . . . . . . . . . . 146
Transmission Temperature . . . . 149
Trip Odometer . . . . . . . . . . . . . . . . 146
Voltmeter . . . . . . . . . . . . . . . . . . . . . 150
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 142
General Information
Service and Maintenance . . . . . 393
Towing . . . . . . . . . . . . . . . . . . . . . . . . 273
Vehicle Care . . . . . . . . . . . . . . . . . . 296
Glass Replacement . . . . . . . . . . . . . 324
Glove Box . . . . . . . . . . . . . . . . . . . . . . 126
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 415
H
Hazard Warning Flashers . . . . . . . 185
Head Restraints . . . . . . . . . . . . . . . . . 66
Head-up Display . . . . . . . . . . . . . . . . 164
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 325
Automatic . . . . . . . . . . . . . . . . . . . . . 184
Bulb Replacement . . . . . . . . . . . . 326
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 184
Flash-to-Pass . . . . . . . . . . . . . . . . . 184

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
Index 443
Level ControlAutomatic . . . . . . . . . . . . . . . . . . . . . 245
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 188
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Illumination Control . . . . . . . . . . . 187
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Lights Airbag Readiness . . . . . . . . . . . . . 151
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 155
Brake System Warning . . . . . . . 155
Charging System . . . . . . . . . . . . . 152
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . 153
Cruise Control . . . . . . . . . . . . . . . . 161
Door Ajar . . . . . . . . . . . . . . . . . . . . . 161
Engine Coolant Temperature Warning . . . . . . . 158
Engine Oil Pressure . . . . . . . . . . 159
Flash-to-Pass . . . . . . . . . . . . . . . . . 184
Four-Wheel-Drive . . . . . . . . . . . . . 156
Front Fog Lamp . . . . . . . . . . . . . . 160
High-Beam On . . . . . . . . . . . . . . . . 160
High/Low Beam Changer . . . . . 183 Lights (cont'd)
Lane Keep Assist . . . . . . . . . . . . . 156
Low Fuel Warning . . . . . . . . . . . . 159
Seat Belt Reminders . . . . . . . . . . 150
Security . . . . . . . . . . . . . . . . . . . . . . 160
StabiliTrak OFF . . . . . . . . . . . . . . . 157
Tire Pressure . . . . . . . . . . . . . . . . . 158
Tow/Haul Mode . . . . . . . . . . . . . . . 156
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 158
Traction Off . . . . . . . . . . . . . . . . . . . 157
Locking Rear Axle . . . . . . . . . . . . . . 245
Locks Automatic Door . . . . . . . . . . . . . . . . . 45
Delayed Locking . . . . . . . . . . . . . . . . 45
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lockout Protection . . . . . . . . . . . . . . 46
Power Door . . . . . . . . . . . . . . . . . . . . . 45
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Loss of Control . . . . . . . . . . . . . . . . . 203
Low Fuel Warning Light . . . . . . . . . 159
Low-Profile Tires . . . . . . . . . . . . . . . . 342
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 111
Lumbar Adjustment . . . . . . . . . . . . . . 68 Front Seats . . . . . . . . . . . . . . . . . . . . . 68M
Magnetic Ride Control . . . . . . . . . . 244
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 407
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 401
Maintenance Schedule . . . . . . . . . 395 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 404
Transfer Case . . . . . . . . . . . . . . . . 234
Malfunction Indicator Lamp . . . . . 153
Manual Mode . . . . . . . . . . . . . . . . . . . 231
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 69
Messages Engine Power . . . . . . . . . . . . . . . . 168
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 168
Vehicle Speed . . . . . . . . . . . . . . . . 169
Mirror
Child-View . . . . . . . . . . . . . . . . . . . . . . 60
Mirrors Automatic Dimming . . . . . . . . . . . . . 58
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 60
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 58
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 56
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 57
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 58

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Cana-
da/Mexico-12460267) - 2019 - crc - 9/11/18
448 Index
Vehicle (cont'd)Remote Start . . . . . . . . . . . . . . . . . . . 43
Security . . . . . . . . . . . . . . . . . . . . . . . . 53
Speed Messages . . . . . . . . . . . . . 169
Towing . . . . . . . . . . . . . . . . . . . . . . . . 378
Vehicle Ahead Indicator . . . . . . . . 157
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . 348
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . . . 423
Ventilation, Air . . . . . . . . . . . . . . . . . . 196
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Voltmeter Gauge . . . . . . . . . . . . . . . 150
W
Warning Brake System Light . . . . . . . . . . . 155
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 266
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 142
Warnings Hazard Flashers . . . . . . . . . . . . . . 185
Washer Fluid . . . . . . . . . . . . . . . . . . . 315
Wheels
Alignment and Tire Balance . . 360
Different Size . . . . . . . . . . . . . . . . . 358
Replacement . . . . . . . . . . . . . . . . . 360 When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Where to Put the Restraint . . . . . 110
Windows . . . . . . . . . . . . . . . . . . . . . . . . 60 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Windshield Replacement . . . . . . . . . . . . . . . . . 324
Wiper/Washer . . . . . . . . . . . . . . . . 133
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 209
Winter Tires . . . . . . . . . . . . . . . . . . . . 342
Wiper Blade Replacement . . . . . . 323
Wipers
Rear Washer . . . . . . . . . . . . . . . . . 135
Wireless Charging . . . . . . . . . . . . . . 139