2020 CADILLAC XT6 check engine

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
6 INTRODUCTION
1.Air Vents 0162.
2. Exterior Lamp Controls 0144.
Turn Signal Lever. See Turn and
Lane-Change Signals 0148.
IntelliBeam System Button (If
Equipped). See Exterior Lamp
Controls 0144.
Adaptive Headlight System
Button (If Equipped). See Exterior
Lamp Controls 0144.
3. Instrument Cluster 0113.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0128.
4. Windshield Wiper/Washer 0106.
Rear Window Wiper/Washer
0 107.
5. ENGINE START/STOP Button. See Ignition Positions 0180.
6. Park Assist Button. See Assistance Systems for Parking or
Backing 0217.
Automatic Parking Assist (APA)
Button. See Assistance Systems
for Parking or Backing 0217. 7. Stop/Start Disable Switch. See
Stop/Start System 0182.
8. Light Sensor. See Automatic
Headlamp System 0147.
9. Hazard Warning Flashers 0148.
Lane Keep Assist (LKA) 0237 (If
Equipped).
10. Infotainment 0152.
11. Heated and Ventilated Front Seats
048 (If Equipped).
12. Dual Automatic Climate Control
System 0153.
13. MODE Switch. See Driver Mode
Control 0202.
Traction Control/Electronic
Stability Control 0200.
14. Infotainment Controls. See Infotainment 0152.
15. Shift Lever. See Automatic
Transmission 0190.
16. Steering Wheel Controls 0105.
17. Steering Wheel Controls 0105. Driver Information Center (DIC)
Controls. See
Driver Information
Center (DIC) 0128.
18. Horn 0105.
19. Steering Wheel Adjustment 0105
(Out of View).
20. Forward Collision Alert (FCA)
System 0226 (If Equipped).
Heated Steering Wheel 0105 (If
Equipped).
21. Cruise Control 0203.
Adaptive Cruise Control 0205 (If
Equipped).
Phone Button. See Steering Wheel
Controls 0105.
22. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0120.
23. Hood Release. See Hood0261.
24. Head-Up Display (HUD) 0131 (If
Equipped).
25. Instrument Panel Illumination
Control 0149.
26. Electric Parking Brake 0198.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
KEYS, DOORS, AND WINDOWS 15
3. Remove the old battery. Do notuse a metal object.
4. Insert the new battery on the back housing, positive side facing
down. Replace with a CR2032 or
equivalent battery.
5. Align the front and back housing then snap the transmitter
together.
6. Reinsert the key.
Remote Vehicle Start
This feature allows the engine to be
started from outside of the vehicle.
/: This button is on the RKE
transmitter for remote start.
The climate control system will use
the previous settings during a remote
start. The rear defog may come on
during remote start based on cold
ambient conditions. The rear fog
indicator light does not come on
during remote start.
If the vehicle has auto heated or
ventilated seats they may come on
during a remote start. See Heated and
Ventilated Front Seats 048.
Laws in some local communities may
restrict the use of remote starters. For
example, some laws may require a
person using remote start to have the
vehicle in view. Check local
regulations for any requirements.
Do not use the remote start feature if
the vehicle is low on fuel. The vehicle
could run out of fuel.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE) System
0 8. Starting the Engine Using Remote
Start
1. Press and release
Qon the RKE
transmitter.
2. Immediately press and hold
/
for at least four seconds or until
the turn signal lamps flash. The
turn signal lamps flashing
confirms the request to remote
start the vehicle has been
received.
During the remote start the
doors will be locked and the
parking lamps will remain on as
long as the engine is running.
The engine will shut off after
15 minutes unless a time
extension is done or the ignition
is turned on.
3. With the RKE transmitter in the vehicle, press the brake pedal
and start the vehicle to drive.
Extending Engine Run Time
The engine run time can also be
extended by another 15 minutes,
if during the first 15 minutes

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
32 KEYS, DOORS, AND WINDOWS
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light may come 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 vehicle will not change ignition
modes (ACC/ACCESSORY, on, off), and
the RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the transmitter pocket
located in the center console. See
Remote Keyless Entry (RKE) System
Operation08.
If the ignition mode will not change
with the other transmitter or in the
transmitter pocket, your vehicle needs
service. If the ignition does change
modes, the first transmitter may be
faulty. See your dealer who can service the theft-deterrent system and have a
new RKE transmitter programmed to
the vehicle.
It is possible for the immobilizer
system to learn new or replacement
RKE transmitters. Up to eight
transmitters can be programmed for
the vehicle. To program additional
transmitters, see
“Programming
Transmitters to the Vehicle ”under
Remote Keyless Entry (RKE) System
Operation 08.
Do not leave the key or device that
disarms or deactivates the
theft-deterrent system in the vehicle.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you cut
too sharply into the right lane, you
could hit a vehicle on the right.
Check the inside mirror or glance
over your shoulder before changing
lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from the
driver seat.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
SEATS AND RESTRAINTS 69
to normal operation; the doors can be
locked, the interior lamps can be
turned off, and the hazard warning
flashers can be turned off using the
controls for those features. If any of
these systems are damaged in the
crash they may not operate as normal.
{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 0360 and
Event Data Recorders 0361.
. 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.
The words ON and OFF, and the
symbols for on and off, will be visible
during the system check. When the
system check is complete, either the
word ON or OFF, and the symbol for
on or off, will be visible. See Passenger
Airbag Status Indicator 0119.
The passenger sensing system turns
off the front outboard passenger
frontal airbag under certain
conditions. No other airbag is affected
by the passenger sensing system.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
104 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . 105
Steering Wheel Controls . . . . . . . . . 105
Heated Steering Wheel . . . . . . . . . . 105
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Windshield Wiper/Washer . . . . . . . 106
Rear Window Wiper/Washer . . . . 107
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Power Outlets . . . . . . . . . . . . . . . . . . . . . 109
Wireless Charging . . . . . . . . . . . . . . . . 110
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . 112
Instrument Cluster . . . . . . . . . . . . . . . 113
Speedometer . . . . . . . . . . . . . . . . . . . . . . 116
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 116
Trip Odometer . . . . . . . . . . . . . . . . . . . . 116
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 116
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 117
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Seat Belt Reminders . . . . . . . . . . . . . . 118 Airbag Readiness Light . . . . . . . . . . 119
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 119
Charging System Light . . . . . . . . . . . 120
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 120
Brake System Warning Light . . . . 122
Electric Parking Brake Light . . . . . 122
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 123
All-Wheel-Drive Light . . . . . . . . . . . . 123
Lane Keep Assist (LKA) Light . . . 124
Vehicle Ahead Indicator . . . . . . . . . 124
Pedestrian Ahead Indicator . . . . . . 124
Traction Off Light . . . . . . . . . . . . . . . . 125
StabiliTrak OFF Light . . . . . . . . . . . . 125
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 125
Driver Mode Control Light . . . . . . . 126
Tire Pressure Light . . . . . . . . . . . . . . . 126
Engine Oil Pressure Light . . . . . . . . 126
Low Fuel Warning Light . . . . . . . . . 127
Security Light . . . . . . . . . . . . . . . . . . . . . 127
High-Beam On Light . . . . . . . . . . . . . 127
Lamps On Reminder . . . . . . . . . . . . . 128
Cruise Control Light . . . . . . . . . . . . . . 128
Door Ajar Light . . . . . . . . . . . . . . . . . . . 128
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . 128
Head-Up Display (HUD) . . . . . . . . . 131
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 134
Engine Power Messages . . . . . . . . . . 135
Vehicle Speed Messages . . . . . . . . . 135
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 135
Universal Remote System
Universal Remote System . . . . . . . . 141
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . 141
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 143

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
112 INSTRUMENTS AND CONTROLS
Freescale-WCT library
Copyright (c) 2012-2014 Freescale
Semiconductor, Inc.. All rights
reserved.1. Redistributions of source code must retain the above copyright
notice, this list of conditions and
the following disclaimer.
2. Redistributions in binary form must reproduce the above
copyright notice, this list of
conditions and the following
disclaimer in the documentation
and/or other materials provided
with the distribution.
3. Neither the name of the copyright holder nor the names
of its contributors may be used
to endorse or promote products
derived from this software
without specific prior written
permission. THIS SOFTWARE IS PROVIDED BY
THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL
THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
120 INSTRUMENTS AND CONTROLS
{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 Light0119 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.
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 Mode. See
Ignition Positions
0180.
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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
INSTRUMENTS AND CONTROLS 121
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 Modifications0260.
If the light is f lashing : 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 fuel
funnel adapter, make sure that it
has been removed. See “Filling the
Tank with a Portable Gas Can ”
under Filling the Tank 0242. 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
Recommended
Fuel 0241.
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