power steering CADILLAC CT6 2020 User Guide

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/14/19
198 DRIVING AND OPERATING
Permanent Tap Shift Mode
To enter Permanent Tap Shift Mode:1. With the vehicle in D (Drive), pull back on the shift lever to
activate M (Manual Mode). The
M in the shift pattern will
illuminate in red, and the D will
switch to white.
2. After releasing the shift lever, it will return to the center position.
3. Press the controls on the back of the steering wheel to shift. Use
the left steering wheel control to
downshift, and the right control
to upshift. To shift to the lowest
available gear, press and hold the
left control.
To exit Permanent Tap Shift Mode: 1. To exit M (Manual Mode) and return to D (Drive), pull back on
the shift lever. The D in the shift
pattern will illuminate in red,
and the M will switch to white.
2. After releasing the shift lever, it will return to the center position. M (Manual Mode) can be exited to
return to D (Drive) at any speed by
pulling the lever rearward from the
center position. It is not necessary to
stop the vehicle or shift to N (Neutral)
or P (Park) before shifting back to
D (Drive).
Temporary Tap Manual Shift Mode
To enter Temporary Tap Shift Mode:
1. With the transmission in D (Drive) and not in Permanent
Tap Shift Mode, the Tap Shift
controls will activate a
temporary tap manual shift
mode, allowing the transmission
to be manually shifted.
2. To shift to the lowest available gear, press and hold the left
control.
3. To deactivate, hold the right control briefly. Automatic shifts
return after no manual shifts
have been done for seven to
10 seconds. While using Tap Shift, the vehicle will
have firmer, quicker shifting. This can
be used for sport driving or when
climbing or descending hills, to stay in
gear longer, or to downshift for more
power or engine braking.
The transmission will only allow
shifting into gears appropriate for the
vehicle speed and engine revolutions
per minute (rpm). If shifting is
prevented for any reason, a SHIFT
DENIED message will be displayed in
the instrument cluster. The
transmission will not automatically
shift to the next higher gear if the
engine rpm is too high. It will only
automatically shift to the next lower
gear if the engine rpm is much
too low.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/14/19
DRIVING AND OPERATING 199
Drive Systems
All-Wheel Drive
Vehicles with this feature always send
engine power to all four wheels. It is
fully automatic, and adjusts itself as
needed for road conditions.
Brakes
Electric Brake Boost
Vehicles equipped with electric brake
boost have hydraulic brake circuits
that are electronically controlled when
the brake pedal is applied during
normal operation. The system
performs routine tests and turns off
within a few minutes after the vehicle
is shutdown. Noise may be heard
during this time. If the brake pedal is
pressed during the tests or when the
electric brake boost system is off, a
noticeable change in pedal force and
travel may be felt. This is normal.
Antilock Brake
System (ABS)
The Antilock Brake System (ABS)
helps prevent a braking skid and
maintain steering while braking hard.
ABS performs a system check when
the vehicle is first driven.
A momentary motor or clicking noisemay be heard while this test is going
on, and the brake pedal may move
slightly. This is normal.
If there is a problem with ABS, this
warning light stays on. See
Antilock
Brake System (ABS) Warning Light
0 126.
ABS does not change the time needed
to get a foot on the brake pedal and
does not always decrease stopping
distance. If you get too close to the
vehicle ahead, there will not be
enough time to apply the brakes if
that vehicle suddenly slows or stops.
Always leave enough room ahead to
stop, even with ABS.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/14/19
204 DRIVING AND OPERATING
Ifdcomes on and stays on, the
vehicle may need more time to
diagnose the problem. If the condition
persists, see your dealer.
Turning the Systems Off and On
Caution
Do not repeatedly brake or
accelerate heavily when TCS is off.
The vehicle driveline could be
damaged. To turn off only TCS, press and
release
Y. The Traction Off lighti
displays in the instrument cluster and
the appropriate DIC message displays.
To turn TCS on again, press and
release
Y. The Traction Off lighti
displayed in the instrument cluster
will turn off.
To turn off both TCS and StabiliTrak/
ESC, press and hold
Yuntil the
Traction Off light
iand StabiliTrak/
ESC OFF light
gcome on and stay on
in the instrument cluster. The
appropriate DIC message displays.
To turn TCS and StabiliTrak/ESC on
again, press and release
Y. The
Traction Off light
iand StabiliTrak/
ESC OFF light
gin the instrument
cluster turn off.
Adding accessories can affect vehicle
performance. See Accessories and
Modifications 0272.
Driver Mode Control
Driver Mode Control attempts to add
a sportier feel, provide a more
comfortable ride, or assists in different
weather conditions or terrain. This
system simultaneously changes the
software settings of various
sub-systems to optimize driving
performance. Depending on the option
package, available features, and mode
selection; the Exhaust, Suspension,
Steering, Brakes, and Powertrain will
change settings to achieve the desired
mode characteristics. If the vehicle is
equipped with Magnetic Ride Control,
selecting the various Driver Modes
adjusts the ride of the vehicle to
enhance the ride performance for the
road conditions and the
selected mode.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
VEHICLE CARE 307
FusesUsage
F1 Auxiliary power outlet front console
F2 Visor
F3 Front blower
F4 Body control module 8
F5 Steering column switch module Fuses
Usage
F6 Electric steering column lock
F7 Glove box door
F8 Front heated seat module
F9 Sensing and diagnostic module Fuses
Usage
F10 Body control module 4
F11 Body control module 3
F12 Data link connector
F13 –
F14 Electronic shifter
F15 Front camera
F16 Display
F17 Heating, ventilation, and air conditioning
control
F18 OnStar
F19 –
F20 –
F21 –
F22 –
F23 Central gateway module
F24 Center stack module/ Infotainment

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
352 VEHICLE CARE
Caution
Using petroleum-based tire dressing
products on the vehicle may
damage the paint finish and/or
tires. When applying a tire dressing,
always wipe off any overspray from
all painted surfaces on the vehicle.
Wheels and Wheel Trim
Use a soft, clean cloth with mild soap
and water to clean the wheels. After
rinsing thoroughly with clean water,
dry with a soft, clean towel. A wax
may then be applied.
Caution
Chrome wheels and chrome wheel
trim may be damaged if the vehicle
is not washed after driving on roads
that have been sprayed with
magnesium chloride or calcium
chloride. These are used on roads
for conditions such as dust and ice.
Always wash the chrome with soap
and water after exposure.
Caution
To avoid surface damage on wheels
and wheel trim, do not use strong
soaps, chemicals, abrasive polishes,
cleaners, or brushes. Use only GM
approved cleaners. Do not drive the
vehicle through an automatic car
wash that uses silicon carbide tire/
wheel cleaning brushes. Damage
could occur and the repairs would
not be covered by the vehicle
warranty.
Brake System
Visually inspect brake lines and hoses
for proper hook-up, binding, leaks,
cracks, chafing, etc. Inspect disc brake
pads for wear and rotors for surface
condition. Inspect brake linings/shoes
for wear or cracks. Inspect all other
brake parts.
Steering, Suspension, and
Chassis Components
Visually inspect steering, suspension,
and chassis components for damaged,
loose, or missing parts or signs of
wear at least once a year.
Inspect power steering for proper
attachment, connections, binding,
leaks, cracks, chafing, etc.
Visually check constant velocity joint
boots and axle seals for leaks.
Body Component Lubrication
Lubricate all key lock cylinders, hood
hinges, liftgate hinges, and the steel
fuel door hinges, unless the
components are plastic. Applying
silicone grease on weatherstrips with a
clean cloth will make them last
longer, seal better, and not stick or
squeak.
Underbody Maintenance
At least twice a year, spring and fall,
use plain water to flush any corrosive
materials from the underbody. Take

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
360 SERVICE AND MAINTENANCE
.Check tire inflation pressures. See
Tire Pressure 0322.
. Inspect tire wear. See Tire
Inspection 0329.
. Visually check for fluid leaks.
. Inspect brake system. See Exterior
Care 0349.
. Visually inspect steering,
suspension, and chassis
components for damage, including
cracks or tears in the rubber boots,
loose or missing parts, or signs of
wear at least once a year. See
Exterior Care 0349.
. Inspect power steering for proper
attachment, connections, binding,
leaks, cracks, chafing, etc. .
Visually inspect halfshafts and
driveshafts for excessive wear,
lubricant leaks, and/or damage
including: tube dents or cracks,
constant velocity joint or universal
joint looseness, cracked or missing
boots, loose or missing boot
clamps, center bearing excessive
looseness, loose or missing
fasteners, and axle seals leaks.
. Check restraint system
components. See Safety System
Check 064.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for loose
or damaged parts. .
Lubricate body components. See
Exterior Care 0349.
. Check starter switch. See Starter
Switch Check 0294.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check 0294.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for signs
of wear, cracks, or other damage.
Check the hold open ability of the
strut. If the hold open ability is
low, service the gas strut. See Gas
Strut(s) 0296.
. Inspect sunroof track and seal,
if equipped. See Sunroof041.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-13566829) -
2020 - CRC - 6/11/19
408 INDEX
RoadsDriving, Wet . . . . . . . . . . . . . . . . . . . . . . . 176
Roadside Service . . . . . . . . . . . . . . . . . . . . 380
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . 329
Routing, Engine Drive Belt . . . . . . . . . 375
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . 386
General Motors . . . . . . . . . . . . . . . . . . . 387
U.S. Government . . . . . . . . . . . . . . . . . . 386
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Safety System Check . . . . . . . . . . . . . . . . 64
Scheduling Appointments . . . . . . . . . . 382
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . 60
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . 120
Replacing after a Crash . . . . . . . . . . . . . 65
Use During Pregnancy . . . . . . . . . . . . . . 63 Seats
Head Restraints . . . . . . . . . . . . . . . . . . . . . 44
Heated and Ventilated Front . . . . . . . 51
Heated and Ventilated, Rear . . . . . . . 56
Lumbar Adjustment, Front . . . . . . . . . 46
Lumbar Adjustment, Rear . . . . . . . . . . 55
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Power Adjustment, Front . . . . . . . . . . 46
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Reclining Seatbacks . . . . . . . . . . . . . . . . 48
Securing Child Restraints . . . . . . . 92, 94
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . 30
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 Accessories andModifications . . . . . . . . . . . . . . . . . . . . 272
Doing Your Own Work . . . . . . . . . . . 272
Maintenance Records . . . . . . . . . . . . 371
Maintenance, General Information . . . . . . . . . . . . . . . . . . . . . . 357
Parts Identification . . . . . . . . . . . . . . . 372
Scheduling Appointments . . . . . . . . 382
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Services
Special Application . . . . . . . . . . . . . . . 364
Servicing the Airbag . . . . . . . . . . . . . . . . . 75
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . 189
Side Blind Zone Alert (SBZA) . . . . . . 252
Signals, Turn and Lane-Change . . . . 153
Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Special Application Services . . . . . . . 364
Specifications and Capacities . . . . . . 373
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . 115
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . 201
Start Vehicle, Remote . . . . . . . . . . . . . . . 17
Starter Switch Check . . . . . . . . . . . . . . . 294
Starting the Engine . . . . . . . . . . . . . . . . . 185
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Heated Wheel . . . . . . . . . . . . . . . . . . . . . 103
Wheel Adjustment . . . . . . . . . . . . . . . . 103
Wheel Controls . . . . . . . . . . . . . . . . . . . 103
Stop/Start System . . . . . . . . . . . . . . . . . . 186
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99