check engine CADILLAC CT6 2016 Owners Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
In Brief 71. Air Vents 0 189 .
2. Exterior Lamp Controls 0 170 .
Turn Signal Lever. See Turn
and Lane-Change
Signals 0 173 .
3. Instrument Cluster (Uplevel)
0 121 or Instrument Cluster
(Base Level) 0 118 .
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0 140 .
4. Windshield Wiper/
Washer 0 111 .
5. ENGINE START/STOP Button.
See Ignition Positions 0 202 .
6. Parking Assist Button. See
Assistance Systems for
Parking or Backing 0 231 .
Automatic Parking Assist (APA)
Button. See Assistance
Systems for Parking or
Backing 0 231 .
Automatic Engine Start/Stop
Disable Switch. See Starting
the Engine 0 204 . 7. Light Sensor. See Automatic
Headlamp System 0 172 .
8. Hazard Warning
Flashers 0 173 .
Glove Box Button. See Glove
Box 0 106 .
9. Infotainment 0 177 .
10. Heated and Ventilated Front
Seats 0 64 (If Equipped).
11. Infotainment Touch Pad. See
the infotainment manual.
12. Automatic Climate Control
System (Quad Zone) 0 178 or
Automatic Climate Control
System (Dual Zone) 0 185 .
13. Automatic Vehicle Hold
(AVH) 0 217 .
MODE Button. See Driver
Mode Control 0 219 .
Traction Control/Electronic
Stability Control 0 217 .
14. Shift Lever. See Automatic
Transmission 0 210 .
15. Driver Information Center (DIC)
Controls. See Driver
Information Center (DIC) 0 140 . 16. Steering Wheel Controls. See
the infotainment manual.
17. Horn 0 111 .
18. Steering Wheel Adjustment
0 110 (Out of View).
19. Forward Collision Alert (FCA)
System 0 237 (If Equipped).
Lane Keep Assist (LKA) 0 248
(If Equipped).
Heated Steering Wheel 0 111
(If Equipped).
20. Cruise Control 0 220 .
Adaptive Cruise Control 0 223
(If Equipped).
Phone Button. See “ Steering
Wheel Controls ” in the
infotainment manual.
21. Data Link Connector (DLC)
(Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0 132 .
22. Instrument Panel
Storage 0 106 .
Instrument Panel Fuse
Block 0 293 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
36 Keys, Doors, and Windows
Remote Vehicle Start This feature allows the engine to be
started from outside the vehicle.
/ : This button will be on the RKE
transmitter if the vehicle has remote
start.
The climate control system will use
the previous settings during a
remote start. The rear window
defogger may come on during
remote start based on cold ambient
conditions. The rear defog indicator
light does not come on during
remote start.
If equipped, the heated and
ventilated front seats may also
come on when the vehicle
personalization setting is enabled.
See Heated and Ventilated Front
Seats 0 64 .
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. If your vehicle is low on fuel, do not
use the remote start feature. The
vehicle may run out of fuel.
The RKE transmitter range may be
shorter while the vehicle is running.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 0 29 .
Starting the Engine Using Remote
Start
1. Press and release
Q on the
RKE transmitter.
2. Immediately press and hold
/for at least four seconds or until
the lamps flash. This 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
10 minutes unless a time
extension is done or the
ignition is put in ON/RUN/
START. 3. Press the brake pedal and
select the ON/RUN/START
ignition mode to drive the
vehicle.
Extending Engine Run Time
The engine run time can also be
extended by another 10 minutes,
if during the first 10 minutes
Steps 1 and 2 are repeated while
the engine is still running. An
extension can be requested
30 seconds after starting. This
provides a total of 20 minutes.
The remote start can only be
extended once.
When the remote start is extended,
the second 10 minute period is
added on to the first 10 minutes for
a total of 20 minutes.
A maximum of two remote starts,
or a remote start with an extension,
are allowed between ignition cycles.
The vehicle's ignition must be
changed to ON/RUN/START and
then back to OFF before the remote
start procedure can be used again.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 109
Instruments and
Controls Controls Steering Wheel Adjustment . . . 110
Steering Wheel Controls . . . . . . 111
Heated Steering Wheel . . . . . . . 111
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Windshield Wiper/Washer . . . . . 111
Compass . . . . . . . . . . . . . . . . . . . . . 113
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 113
Power Outlets . . . . . . . . . . . . . . . . 114
Wireless Charging . . . . . . . . . . . . 115
Warning Lights, Gauges, and
Indicators Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . 117
Instrument Cluster (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . 118
Instrument Cluster
(Uplevel) . . . . . . . . . . . . . . . . . . . . 121
Speedometer . . . . . . . . . . . . . . . . . 123
Odometer . . . . . . . . . . . . . . . . . . . . . 124
Trip Odometer . . . . . . . . . . . . . . . . 124
Tachometer . . . . . . . . . . . . . . . . . . . 124
Fuel Gauge . . . . . . . . . . . . . . . . . . . 124
Boost Gauge (Performance
Configuration Only) . . . . . . . . . 125 Engine Oil Pressure Gauge
(Base Level Cluster Only) . . . 126
Engine Oil Temperature Gauge
(Performance
Configuration Only) . . . . . . . . . 127
Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 128
Voltmeter Gauge (Base Level
Cluster Only) . . . . . . . . . . . . . . . . 129
Safety Belt Reminders . . . . . . . . 129
Airbag Readiness Light . . . . . . . 130
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 130
Charging System Light . . . . . . . 131
Malfunction Indicator Lamp
(Check Engine Light) . . . . . . . . 132
Brake System Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . 133
Electric Parking Brake
Light . . . . . . . . . . . . . . . . . . . . . . . . 134
Service Electric Parking Brake
Light . . . . . . . . . . . . . . . . . . . . . . . . 134
Antilock Brake System (ABS)
Warning Light . . . . . . . . . . . . . . . 135
Lane Keep Assist (LKA)
Light . . . . . . . . . . . . . . . . . . . . . . . . 135
Vehicle Ahead Indicator . . . . . . 136
Pedestrian Ahead Indicator . . . 136
Traction Off Light . . . . . . . . . . . . . 136
StabiliTrak ®
OFF Light . . . . . . . . 136 Traction Control System (TCS)/
StabiliTrak ®
Light . . . . . . . . . . . 137
Engine Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 137
Tire Pressure Light . . . . . . . . . . . 137
Engine Oil Pressure Light . . . . 138
Low Fuel Warning Light . . . . . . 138
Auto Stop Mode (Uplevel
Cluster) . . . . . . . . . . . . . . . . . . . . . 139
Security Light . . . . . . . . . . . . . . . . . 139
High-Beam On Light . . . . . . . . . . 139
Lamps On Reminder . . . . . . . . . 139
Cruise Control Light . . . . . . . . . . 140
Door Ajar Light . . . . . . . . . . . . . . . 140
Information Displays Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 140
Head-Up Display (HUD) . . . . . . 143
Vehicle Messages Vehicle Messages . . . . . . . . . . . . 146
Battery Voltage and Charging
Messages . . . . . . . . . . . . . . . . . . . 147
Brake System Messages . . . . . 147
Compass Messages . . . . . . . . . . 148
Cruise Control Messages . . . . . 148
Door Ajar Messages . . . . . . . . . . 148
Engine Cooling System
Messages . . . . . . . . . . . . . . . . . . . 149
Engine Oil Messages . . . . . . . . . 149

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 117
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 CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
126 Instruments and Controls
English
This gauge indicates boost under
heavier throttle.
It displays the air pressure level in
the intake manifold before it enters
the engine's combustion chamber.
The gauge is automatically centered
at zero every time the engine is
started. Actual boost is displayed
from this zero point. Changes in
ambient pressure, such as driving in
mountains and changing weather,
will slightly change the zero reading. Engine Oil Pressure
Gauge (Base Level
Cluster Only)
Metric, Standard Theme Shown English, Standard Theme Shown
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

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 127message may display. See Engine
Oil Messages 0 149
and Engine Oil 0 270 .
CautionLack 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 Oil Temperature
Gauge (Performance
Configuration Only)
Metric English
This gauge shows the engine oil
temperature.
If the gauge pointer moves into the
high end, it means that the engine
oil has overheated. If the vehicle
has been operated under normal
driving conditions, pull off the road,
stop the vehicle, and turn off the
engine as soon as possible.
See Engine Oil 0 270 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 131
United States
Canada
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 either the on or off symbol, to let
you know the status of the front
outboard passenger frontal airbag
and knee 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
and knee airbag are 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
and knee 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 0 130 for more information,
including important safety
information. Charging System Light On some vehicles 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.
For vehicles with a reconfigurable
cluster, this light may not come on
when the ignition is turned on.
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 0 147 .

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
132 Instruments and Controls 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. See Ignition
Positions 0 202 . 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.
CautionIf 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
(Continued) Caution (Continued) vehicle warranty. This could also
affect the vehicle ’ s ability to pass
an Emissions Inspection/
Maintenance test. See
Accessories and
Modifications 0 262 .
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

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 133previous 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 0 253 .
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 0 251 .
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 0 260 . 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.
Brake System Warning
Light The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Instruments and Controls 137
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.
If the light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working. See Traction Control/Electronic
Stability Control 0 217 .
Engine Coolant
Temperature Warning
Light
On some vehicles this light comes
on briefly while starting the vehicle.
If it does not, have the vehicle
serviced by the dealer. If the system
is working normally the indicator
light goes off. For vehicles with the
reconfigurable cluster, this light may
not come on when starting the
vehicle. CautionThe engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving
with this light on can damage the
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating 0 280 .
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens pull over and turn off
the engine as soon as possible. See
Engine Overheating 0 280 .
Tire Pressure Light