2016 GMC YUKON check engine light

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
In Brief 7
1.Air Vents 0189.
2.
gTraction Control/Electronic
Stability Control 0232.
jPower Assist Steps 048 (If
Equipped).
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or
Backing 0245.
ALane Keep Assist (LKA)
0 254 (If Equipped).
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake
Pedal 0209.
3. Turn Signal Lever. See Turn
and Lane-Change
Signals 0178.
Windshield Wiper/
Washer 0125.
4. Favorite Switches (Out of View). See Steering Wheel
Controls 0125. Volume Switches (Out of View).
See
Steering Wheel
Controls 0125.
5. Instrument Cluster 0134.
6. Hazard Warning
Flashers 0178.
7. Shift Lever. See Automatic
Transmission 0220.
Tow/Haul Selector Button. See
Tow/Haul Mode 0224.
Range Selection Mode (If
Equipped). See Manual
Mode 0222.
8. Light Sensor. See Automatic
Headlamp System 0177.
9. Infotainment 0183.
10. Dual Automatic Climate Control
System 0184.
11. Heated and Cooled Front
Seats 067 (If Equipped).
12. 110 Volt Power Outlet (If Equipped). See Power
Outlets 0129.
13. Power Outlets 0129 (If
Equipped). 14. Rear Climate Control Buttons
(If Equipped). See Rear
Climate Control System 0188.
15. Steering Wheel Controls 0125.
16. Horn 0125.
17. Steering Wheel
Adjustment 0124.
18. Hood Release. See Hood 0277.
19. Cruise Control 0235.
Adaptive Cruise Control 0238
(If Equipped).
Forward Collision Alert (FCA)
System 0248 (If Equipped).
Heated Steering Wheel 0125
(If Equipped).
20. Trailer Brake Control Panel (If Equipped). See Towing
Equipment 0266.
21. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0142.
22. Four-Wheel Drive 0225 (If
Equipped).

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Keys, Doors, and Windows 51
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 0390.
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
0304. 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 Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
92 Seats and Restraints
and turn off the interior lamps and
hazard warning flashers by using
the controls for those features.
{Warning
A crash severe enough to inflate
the airbags may have also
damaged important functions in
the vehicle, such as the fuel
system, brake and steering
systems, etc. Even if the vehicle
appears to be drivable after a
moderate crash, there may be
concealed damage that could
make it difficult to safely operate
the vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag. .
Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for the vehicle covers the need
to replace other parts.
. The vehicle has a crash sensing
and diagnostic module which
records information after a
crash. See Vehicle Data
Recording and Privacy 0391
and Event Data
Recorders 0392.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the front
outboard passenger position. The
passenger airbag status indicator
will light on the overhead console
when the vehicle is started.
United States
Canada
The words ON and OFF, or the
symbols for on and off, will be
visible during the system check.
When the system check is
complete, either the word ON or

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Instruments and Controls 123
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 124
Steering Wheel Controls . . . . . . 125
Heated Steering Wheel . . . . . . . 125
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Windshield Wiper/Washer . . . . 125
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 127
Compass . . . . . . . . . . . . . . . . . . . . . 128
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 128
Power Outlets . . . . . . . . . . . . . . . . 129
Wireless Charging . . . . . . . . . . . . 131
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 133
Instrument Cluster . . . . . . . . . . . . 134
Speedometer . . . . . . . . . . . . . . . . . 136
Odometer . . . . . . . . . . . . . . . . . . . . . 136
Trip Odometer . . . . . . . . . . . . . . . . 136
Tachometer . . . . . . . . . . . . . . . . . . . 136
Fuel Gauge . . . . . . . . . . . . . . . . . . . 136
Engine Oil Pressure
Gauge . . . . . . . . . . . . . . . . . . . . . . 137 Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 138
Voltmeter Gauge . . . . . . . . . . . . . 139
Safety Belt Reminders . . . . . . . . 140
Airbag Readiness Light . . . . . . . 140
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . 141
Charging System Light . . . . . . . 142
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 142
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 144
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 145
Tow/Haul Mode Light . . . . . . . . . 145
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 145
Vehicle Ahead Indicator . . . . . . 146
Traction Off Light . . . . . . . . . . . . . 146
StabiliTrak
®OFF Light . . . . . . . . 146
Traction Control System (TCS)/ StabiliTrak
®Light . . . . . . . . . . . 146
Tire Pressure Light . . . . . . . . . . . 147
Low Fuel Warning Light . . . . . . 147
Security Light . . . . . . . . . . . . . . . . . 147
High-Beam On Light . . . . . . . . . . 148
Front Fog Lamp Light . . . . . . . . . 148
Lamps On Reminder . . . . . . . . . 148
Cruise Control Light . . . . . . . . . . 148
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . 149
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 152
Battery Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 152
Brake System Messages . . . . . 153
Compass Messages . . . . . . . . . . 153
Cruise Control Messages . . . . . 153
Door Ajar Messages . . . . . . . . . . 154
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . . 154
Engine Oil Messages . . . . . . . . . 155
Engine Power Messages . . . . . 155
Fuel System Messages . . . . . . . 156
Key and Lock Messages . . . . . 156
Lamp Messages . . . . . . . . . . . . . . 156
Object Detection System Messages . . . . . . . . . . . . . . . . . . . 157
Ride Control System Messages . . . . . . . . . . . . . . . . . . . 158
Airbag System Messages . . . . 160
Security Messages . . . . . . . . . . . 160
Steering System Messages . . . . . . . . . . . . . . . . . . . 160
Starting the Vehicle Messages . . . . . . . . . . . . . . . . . . . 160
Tire Messages . . . . . . . . . . . . . . . . 160
Transmission Messages . . . . . . 161

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Instruments and Controls 133
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 Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
142 Instruments and Controls
Warning (Continued)
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. SeeAirbag Readiness
Light 0140 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 0152.
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
ON/RUN with the engine not
running for Key Access or in Service
Only Mode for Keyless Access. See
Ignition Positions (Keyless
Access) 0210 orIgnition Positions
(Key Access) 0212.
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.

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Instruments and Controls 143
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
Modifications0275.
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
been removed. See “Filling the
Tank with a Portable Gas Can”
under Filling the Tank 0258.
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 0255.
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

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Instruments and Controls 147
If the light is on and not flashing, the
TCS and potentially the StabiliTrak
system have been disabled. A DIC
message may display. Check the
DIC messages to determine which
feature(s) is no longer functioning
and whether the vehicle requires
service.
If the light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working.
SeeTraction Control/Electronic
Stability Control 0232.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information
about tire pressures and the TPMS. When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. See
Tire Messages 0160.
Stop as soon as possible, and
inflate the tires to the pressure value
shown on the Tire and Loading
Information label. See Tire
Pressure 0321.
When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light
will come on at every ignition cycle.
See Tire Pressure Monitor
Operation 0324.
Low Fuel Warning Light
This light is near the fuel gauge and
comes on briefly when the ignition is
turned on as a check to show it is
working.
It also comes on when the fuel tank
is low on fuel. The light turns off
when fuel is added. If it does not,
have the vehicle serviced.
Security Light
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle