2017 GMC YUKON check engine light

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
In Brief 7
1.Air Vents 0197.
2. Head-Up Display (HUD) 0156
(If Equipped).
3.
gTraction Control/Electronic
Stability Control 0241.
jPower Assist Steps 049 (If
Equipped).
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or Backing
0 254.
ALane Departure Warning
(LDW) 0263 (If Equipped).
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake Pedal
0 218.
4. Turn Signal Lever. See Turn
and Lane-Change Signals
0 186.
Windshield Wiper/Washer
0 127. 5. Favorite Switches (Out of
View). See “Steering Wheel
Controls” in the infotainment
manual.
Volume Switches (Out of View).
See “Steering Wheel Controls”
in the infotainment manual.
6. Hazard Warning Flashers
0186.
7. Instrument Cluster 0135.
8. Shift Lever. See Automatic
Transmission 0229.
Tow/Haul Selector Button. See
Tow/Haul Mode 0234.
Range Selection Mode (If
Equipped). See Manual Mode
0 231.
9. Light Sensor. See Automatic
Headlamp System 0185.
10. Infotainment 0191.
11. Dual Automatic Climate Control
System 0192.
12. Heated and Ventilated Front
Seats 069. 13. Rear Climate Control Buttons.
SeeRear Climate Control
System 0196.
14. Ignition Positions (Keyless
Access) 0220 orIgnition
Positions (Key Access) 0218.
15. Steering Wheel Controls. See the infotainment manual.
16. Horn 0127.
17. Steering Wheel Adjustment
0126.
18. Hood Release. See Hood
0 287.
19. Cruise Control 0244.
Adaptive Cruise Control 0246
(If Equipped).
Forward Collision Alert (FCA)
System 0257 (If Equipped).
20. Trailer Brake Control Panel (If Equipped). See Towing
Equipment 0275.
21. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0145.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/10/16
52 Keys, Doors, and Windows
Intrusion and Inclination
Sensors Disable Switch
It is recommended that the intrusion
and inclination sensors be
deactivated if pets are left in the
vehicle or the vehicle is being
transported.
With the vehicle off, press
oin
the front overhead console to turn
off the feature.
The indicator light will come on
momentarily, indicating that these
sensors have been disabled until
the next time the alarm system is
armed.
Immobilizer
See Radio Frequency Statement
0 403.
Immobilizer Operation
(Key Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the vehicle is
turned off.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position. The security light, in the instrument
cluster, comes on if there is a
problem with arming or disarming
the theft-deterrent system.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. It may be
necessary to check the fuse. See
Fuses
0317. If the engine still does
not start with the other key, the
vehicle needs service. If the vehicle
does start, the first key may be
faulty. See your dealer.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Instruments and Controls 125
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 126
Steering Wheel Controls . . . . . . 126
Heated Steering Wheel . . . . . . . 126
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Windshield Wiper/Washer . . . . 127
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 129
Compass . . . . . . . . . . . . . . . . . . . . . 129
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 130
Power Outlets . . . . . . . . . . . . . . . . 131
Wireless Charging . . . . . . . . . . . . 133
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 134
Instrument Cluster . . . . . . . . . . . . 135
Speedometer . . . . . . . . . . . . . . . . . 138
Odometer . . . . . . . . . . . . . . . . . . . . . 138
Trip Odometer . . . . . . . . . . . . . . . . 138
Tachometer . . . . . . . . . . . . . . . . . . . 138
Fuel Gauge . . . . . . . . . . . . . . . . . . . 138
Engine Oil Pressure
Gauge . . . . . . . . . . . . . . . . . . . . . . 139 Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 140
Transmission Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 141
Voltmeter Gauge . . . . . . . . . . . . . 141
Safety Belt Reminders . . . . . . . . 142
Airbag Readiness Light . . . . . . . 143
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 143
Charging System Light . . . . . . . 144
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 145
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 147
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 147
Four-Wheel-Drive Light . . . . . . . 148
Tow/Haul Mode Light . . . . . . . . . 148
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 148
Vehicle Ahead Indicator . . . . . . 148
Traction Off Light . . . . . . . . . . . . . 149
StabiliTrak OFF Light . . . . . . . . . 149
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . 149
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 150
Tire Pressure Light . . . . . . . . . . . 150
Engine Oil Pressure Light . . . . 151
Low Fuel Warning Light . . . . . . 151
Security Light . . . . . . . . . . . . . . . . . 151 High-Beam On Light . . . . . . . . . . 152
Front Fog Lamp Light . . . . . . . . . 152
Lamps On Reminder . . . . . . . . . 152
Cruise Control Light . . . . . . . . . . 152
Door Ajar Light . . . . . . . . . . . . . . . 153
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 153
Head-Up Display (HUD) . . . . . . 156
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 159
Battery Voltage and Charging Messages . . . . . . . . . . . . . . . . . . . 160
Brake System Messages . . . . . 160
Compass Messages . . . . . . . . . . 161
Cruise Control Messages . . . . . 161
Door Ajar Messages . . . . . . . . . . 162
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . . 162
Engine Oil Messages . . . . . . . . . 163
Engine Power Messages . . . . . 163
Fuel System Messages . . . . . . . 163
Key and Lock Messages . . . . . 164
Lamp Messages . . . . . . . . . . . . . . 164
Object Detection System Messages . . . . . . . . . . . . . . . . . . . 164
Ride Control System
Messages . . . . . . . . . . . . . . . . . . . 166
Airbag System Messages . . . . 167

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
134 Instruments and Controls
To charge a mobile device:1. Remove all objects from the charging pad. The system may
not charge if there are any
objects between the phone and
charging pad. 2. Place the mobile device face
up on the
@symbol on the
charging pad.
3. The
}will display on theV
on the infotainment screen.
This indicates that the mobile
device is properly positioned
and charging. If a phone is
placed on the charging pad
and
}does not display,
remove the phone from the
pad, turn 180 degrees and wait
three seconds before placing/
aligning the phone on the pad
again.
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Some warning lights come on briefly
when the engine is started to
indicate they are working. When
one of the warning lights comes on
and stays on while driving, or when
one of the gauges shows there may
be a problem, check the section that
explains what to do. Waiting to do
repairs can be costly and even
dangerous.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
144 Instruments and Controls
Canada and Mexico
When the vehicle is started, the
passenger airbag status indicator
will light ON and OFF, or the symbol
for on and off, for several seconds
as a system check. Then, after
several more seconds, the status
indicator will light either ON or OFF,
or the on or off symbol, to let you
know the status of the front
outboard passenger frontal airbag.
If the word ON or the on symbol is
lit on the passenger airbag status
indicator, it means that the front
outboard passenger frontal airbag is
allowed to inflate.
If the word OFF or the off symbol is
lit on the airbag status indicator, it
means that the passenger sensing
system has turned off the front
outboard passenger frontal airbag. If, after several seconds, both status
indicator lights remain on, or if there
are no lights at all, there may be a
problem with the lights or the
passenger sensing system. See
your dealer for service.{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. See
Airbag Readiness
Light 0143 for more information,
including important safety
information.
Charging System Light
The charging system light comes on
briefly when the ignition is turned
on, but the engine is not running, as
a check to show the light is working.
It should go out when the engine is
started.
If the light stays on, or comes on
while driving, there may be a
problem with the electrical charging
system. Have it checked by your
dealer. Driving while this light is on
could drain the battery.
When this light comes on, or is
flashing, the Driver Information
Center (DIC) also displays a
message.
See Battery Voltage and Charging
Messages 0160.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Instruments and Controls 145
If a short distance must be driven
with the light on, be sure to turn off
all accessories, such as the radio
and air conditioner.
Malfunction Indicator
Lamp (Check Engine
Light)
This light is part of the vehicle’s
emission control on-board
diagnostic system. If this light is on
while the engine is running, a
malfunction has been detected and
the vehicle may require service. The
light should come on to show that it
is working when the ignition is in
Service Only Mode.
SeeIgnition Positions (Keyless
Access) 0220 orIgnition Positions
(Key Access) 0218.
Malfunctions are often indicated by
the system before any problem is
noticeable. Being aware of the light
and seeking service promptly when
it comes on may prevent damage.
Caution
If the vehicle is driven continually
with this light on, the emission
control system may not work as
well, the fuel economy may be
lower, and the vehicle may not
run smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty.
Caution
Modifications to the engine,
transmission, exhaust, intake,
or fuel system, or the use of
replacement tires that do not
meet the original tire
specifications, can cause this light
to come on. This could lead to
(Continued)
Caution (Continued)
costly repairs not covered by the
vehicle warranty. This could also
affect the vehicle’s ability to pass
an Emissions Inspection/
Maintenance test. See
Accessories and Modifications
0286.
If the light is flashing : A
malfunction has been detected that
could damage the emission control
system and increase vehicle
emissions. Diagnosis and service
may be required.
To help prevent damage, reduce
vehicle speed and avoid hard
accelerations and uphill grades.
If towing a trailer, reduce the
amount of cargo being hauled as
soon as possible.
If the light continues to flash, find a
safe place to park. Turn the vehicle
off and wait at least 10 seconds
before restarting the engine. If the
light is still flashing, follow the

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
146 Instruments and Controls
previous guidelines and see your
dealer for service as soon as
possible.
If the light is on steady :A
malfunction has been detected.
Diagnosis and service may be
required.
Check the following:
. If fuel has been added to the
vehicle using the capless fuel
funnel adapter, make sure that it
has been removed. See “Filling
the Tank with a Portable Gas
Can” under Filling the Tank
0 267. The diagnostic system
can detect if the adapter has
been left installed in the vehicle,
allowing fuel to evaporate into
the atmosphere. A few driving
trips with the adapter removed
may turn off the light.
. Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go
away once the engine is warmed
up. If this occurs, change the
fuel brand. It may require at least one full tank of the proper
fuel to turn the light off. See
Fuel
0 265.
If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the
test equipment will likely connect to
the vehicle's Data Link
Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. Connecting devices that are
not used to perform an Emissions
Inspection/Maintenance test or to
service the vehicle may affect
vehicle operation. See Add-On
Electrical Equipment 0283. See
your dealer if assistance is needed. The vehicle may not pass
inspection if:
.
The light is on when the engine
is running.
. The light does not come on
when the ignition is in Service
Only Mode.
. Critical emission control systems
have not been completely
diagnosed. If this happens, the
vehicle would not be ready for
inspection and might require
several days of routine driving
before the system is ready for
inspection. This can happen if
the 12-volt battery has recently
been replaced or run down, or if
the vehicle has been recently
serviced.
See your dealer if the vehicle will
not pass or cannot be made ready
for the test.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Instruments and Controls 149
Traction Off Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer. If the system is working
normally, the indicator light then
turns off.
The traction off light comes on when
the Traction Control System (TCS)
has been turned off by pressing and
releasing the TCS/StabiliTrak
button.
This light and the StabiliTrak OFF
light come on when StabiliTrak is
turned off.
If the TCS is off, wheel spin is not
limited. Adjust driving accordingly.
SeeTraction Control/Electronic
Stability Control 0241.
StabiliTrak OFF Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer.
This light comes on when the
StabiliTrak system is turned off.
If StabiliTrak is off, the Traction
Control System (TCS) is also off.
If StabiliTrak and TCS are off, the
system does not assist in controlling
the vehicle. Turn on the TCS and
the StabiliTrak systems, and the
warning light turns off.
See Traction Control/Electronic
Stability Control 0241.
Traction Control System
(TCS)/StabiliTrak Light
This light comes on briefly when the
engine is started.
If the light does not come on, have
the vehicle serviced by your dealer.
If the system is working normally,
the indicator light turns off.
If the light is on and not flashing, the
TCS and potentially the StabiliTrak
system have been disabled.
A Driver Information Center (DIC)
message may display. Check the
DIC messages to determine which
feature(s) is no longer functioning
and whether the vehicle requires
service. See Ride Control System
Messages 0166.
If the light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working.