2017 GMC YUKON XL check engine

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
In Brief 7
1.Air Vents 0196.
2. Head-Up Display (HUD) 0155
(If Equipped).
3.
gTraction Control/Electronic
Stability Control 0239.
jPower Assist Steps 049 (If
Equipped).
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or
Backing 0252.
ALane Departure Warning
(LDW) 0261 (If Equipped).
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake
Pedal 0216.
4. Turn Signal Lever. See Turn
and Lane-Change
Signals 0185.
Windshield Wiper/
Washer 0126. 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 0185.
7. Instrument Cluster 0134.
8. Shift Lever. See Automatic
Transmission 0227.
Tow/Haul Selector Button. See
Tow/Haul Mode 0232.
Range Selection Mode (If
Equipped). See Manual
Mode 0230.
9. Light Sensor. See Automatic
Headlamp System 0184.
10. Infotainment 0190.
11. Dual Automatic Climate Control
System 0191.
12. Heated and Ventilated Front
Seats 068. 13. Rear Climate Control Buttons.
SeeRear Climate Control
System 0195.
14. Ignition Positions (Keyless
Access) 0219 orIgnition
Positions (Key Access) 0217.
15. Steering Wheel Controls. See the infotainment manual.
16. Horn 0126.
17. Steering Wheel
Adjustment 0125.
18. Hood Release. See Hood 0286.
19. Cruise Control 0242.
Adaptive Cruise Control 0244
(If Equipped).
Forward Collision Alert (FCA)
System 0255 (If Equipped).
20. Trailer Brake Control Panel (If Equipped). See Towing
Equipment 0274.
21. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0144.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/5/16
52 Keys, Doors, and Windows
Immobilizer
SeeRadio Frequency
Statement 0401.
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
0316. 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. It is possible for the immobilizer
system to learn new or replacement
keys. Up to eight keys can be
programmed for the vehicle. To
program additional keys, see
Keys
(Keyless Access) 031 orKeys (Key
Access) 028. To program additional
transmitters, see Remote Keyless
Entry (RKE) System Operation
(Keyless Access) 034 orRemote
Keyless Entry (RKE) System
Operation (Key Access) 032.
Do not leave the key or device that
disarms or deactivates the vehicle
theft system in the vehicle.
See your dealer to get a new key
blank cut exactly as the ignition key
that operates the system.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/13/16
124 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 125
Steering Wheel Controls . . . . . . 125
Heated Steering Wheel . . . . . . . 125
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Windshield Wiper/Washer . . . . 126
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 128
Compass . . . . . . . . . . . . . . . . . . . . . 128
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 129
Power Outlets . . . . . . . . . . . . . . . . 130
Wireless Charging . . . . . . . . . . . . 132
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 133
Instrument Cluster . . . . . . . . . . . . 134
Speedometer . . . . . . . . . . . . . . . . . 137
Odometer . . . . . . . . . . . . . . . . . . . . . 137
Trip Odometer . . . . . . . . . . . . . . . . 137
Tachometer . . . . . . . . . . . . . . . . . . . 137
Fuel Gauge . . . . . . . . . . . . . . . . . . . 137
Engine Oil Pressure
Gauge . . . . . . . . . . . . . . . . . . . . . . 138 Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 139
Transmission Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 140
Voltmeter Gauge . . . . . . . . . . . . . 140
Safety Belt Reminders . . . . . . . . 141
Airbag Readiness Light . . . . . . . 142
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 142
Charging System Light . . . . . . . 143
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 144
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 145
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 146
Four-Wheel-Drive Light . . . . . . . 146
Tow/Haul Mode Light . . . . . . . . . 147
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 147
Vehicle Ahead Indicator . . . . . . 147
Traction Off Light . . . . . . . . . . . . . 147
StabiliTrak
®OFF Light . . . . . . . . 148
Traction Control System (TCS)/ StabiliTrak
®Light . . . . . . . . . . . 148
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 148
Tire Pressure Light . . . . . . . . . . . 149
Engine Oil Pressure Light . . . . 149
Low Fuel Warning Light . . . . . . 150
Security Light . . . . . . . . . . . . . . . . . 150 High-Beam On Light . . . . . . . . . . 150
Front Fog Lamp Light . . . . . . . . . 151
Lamps On Reminder . . . . . . . . . 151
Cruise Control Light . . . . . . . . . . 151
Door Ajar Light . . . . . . . . . . . . . . . 151
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 152
Head-Up Display (HUD) . . . . . . 155
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 158
Battery Voltage and Charging Messages . . . . . . . . . . . . . . . . . . . 158
Brake System Messages . . . . . 159
Compass Messages . . . . . . . . . . 159
Cruise Control Messages . . . . . 159
Door Ajar Messages . . . . . . . . . . 160
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . . 161
Engine Oil Messages . . . . . . . . . 161
Engine Power Messages . . . . . 162
Fuel System Messages . . . . . . . 162
Key and Lock Messages . . . . . 162
Lamp Messages . . . . . . . . . . . . . . 163
Object Detection System Messages . . . . . . . . . . . . . . . . . . . 163
Ride Control System
Messages . . . . . . . . . . . . . . . . . . . 165
Airbag System Messages . . . . 166

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/13/16
Instruments and Controls 133
To charge a mobile device:1. Remove all objects from the charging pad. The system may
not charge if there are any
objects on the 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 - 7/13/16
138 Instruments and Controls
Here are four things that some
owners ask about. None of these
show a problem with the fuel gauge:
.At the service station, the fuel
pump shuts off before the gauge
reads full.
. It takes a little more or less fuel
to fill up than the gauge
indicated. For example, the
gauge may have indicated the
tank was half full, but it actually
took a little more or less than
half the tank's capacity to fill
the tank.
. The gauge moves a little while
turning a corner or speeding up.
. The gauge takes a few seconds
to stabilize after the ignition is
turned on, and goes back to
empty when the ignition is
turned off.Engine Oil Pressure
Gauge
Metric Standard Theme
English Standard Theme
The engine oil pressure gauge
shows the engine oil pressure
in kPa (kilopascals) or psi (pounds
per square inch) when the engine is
running.
Oil pressure can vary with engine
speed, outside temperature, and oil
viscosity.
A reading outside the normal
operating range can be caused by a
dangerously low oil level or some
other problem causing low oil
pressure. Check the vehicle's oil as
soon as possible. An oil pressure

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/13/16
Instruments and Controls 139
message may display. SeeEngine
Oil Messages 0161
and Engine Oil 0290.
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
Add oil if required, but if the oil
level is within the operating range
and the oil pressure is still low,
have the vehicle serviced. Always
follow the maintenance schedule
for changing engine oil.
Engine Coolant
Temperature Gauge
Metric Standard Theme
English Standard Theme
This gauge measures the
temperature of the vehicle's engine
coolant.
While driving under normal
operating conditions, if the needle
moves into the red warning area,
the engine is too hot. Pull off the
road, stop the vehicle, and turn off
the engine as soon as possible.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/13/16
Instruments and Controls 143
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 0142 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 0158.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 7/13/16
144 Instruments and Controls
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) 0219 or
Ignition Positions (Key
Access) 0217.
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
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 0285. 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
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 funnel
adapter, make sure that it has