2023 CADILLAC CT4 automatic transmission

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 275
Automatic
Transmission
(Electronic Shifter)
The shift pattern is displayed
in the top of the shift lever.
The selected gear position will
illuminate red on the shift
lever, while all others will be
displayed in white. If the shift
is not immediate, as in very
cold conditions, the indicator
on the shift lever may flash
until it is fully engaged.The shift lever always starts
from a center position,
represented by an up/down
arrow on the shift pattern.
After releasing the shift lever,
it will return to the center
position.
The transmission does not
operate when the vehicle
is off.
If the vehicle is in accessory
mode, the transmission can be
shifted into P (Park).
If the vehicle is turned off
while at a relatively high
vehicle speed, the
transmission will automatically
shift to N (Neutral). Once the
vehicle is stopped, it can be
shifted into P (Park).
P :
This position locks the
drive wheels. Use P (Park)
when starting the engine to
prevent the vehicle from
moving easily.
{Warning
It is dangerous to get out of
the vehicle if the
transmission is not in
P (Park) with the parking
brake set. The vehicle
can roll.
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
276 Driving and Operating
Warning (Continued)
Do not leave the vehicle
when the engine is running.
If the engine has been left
running, the vehicle can
move suddenly. You or
others could be injured. To
be sure the vehicle will not
move, even when on fairly
level ground, always set the
parking brake and place the
transmission into P (Park).
See Shifting Into Park
(Mechanical Shifter)0267 or
Shifting Into Park (Electronic
Shifter) 0268 and
Electric Parking Brake 0287.
This vehicle is equipped with
an electronic controlled
transmission. The shift lock
release button is designed to
prevent inadvertent shifting
out of P (Park) unless the
vehicle is on, the brake pedal is
applied, and the shift lock
release button is pressed.
When the vehicle is stopped,
press ENGINE START/STOP
to turn off the vehicle. The
transmission will shift to
P (Park) automatically, unless
the vehicle is in N (Neutral).
See “Car Wash Mode” later in
this section. The vehicle will not shift into
P (Park) if it is moving too fast.
Stop the vehicle and shift into
P (Park).
To shift in and out of P (Park),
see Shifting Into Park
(Mechanical Shifter)
0267 or
Shifting Into Park (Electronic
Shifter) 0268 and
Shifting out of Park
(Mechanical Shifter) 0269 or
Shifting out of Park (Electronic
Shifter) 0270.
Service Shift Lever Message
If the message SERVICE
SHIFTER SEE OWNER’S
MANUAL appears in the
Driver Information
Center (DIC), the shift lever
needs service. Have the
vehicle serviced as soon as
possible. If the vehicle is
automatically shifting into
P (Park), check to see if the
P (Park) button on top of the
shift lever is stuck. To operate
the vehicle, hold the shift lever
in the desired gear,
R (Reverse) or D (Drive), until

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 279
7. Exit the vehicle and closethe door. The vehicle is
now ready for the
car wash.
8. The vehicle may automatically shift to
P (Park) upon re-entry.
Car Wash Mode (Engine On –
Driver in Vehicle)
To place the vehicle in
N (Neutral) with the engine on
and the vehicle occupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal.
3. Shift to N (Neutral).
4. Release the brake pedal. The vehicle is now ready
for the car wash.
Car Wash Mode (Engine On –
Driver out of Vehicle)
To place the vehicle in
N (Neutral) with the engine on
and the vehicle unoccupied:
1. Drive to the entrance of the car wash.
2. Apply the brake pedal. 3. Open the door.
4. Shift to N (Neutral), then
release the brake pedal.
5. The indicator should continue to show N. If it
does not, repeat
Steps 2–4.
6. Exit the vehicle and close the door. The vehicle is
now ready for the
car wash.
7. The vehicle may automatically shift to
P (Park) upon re-entry.
Caution
A transmission hot message
may display if the automatic
transmission fluid is too hot.
Driving under this condition
can damage the vehicle.
Stop and idle the engine to
cool the automatic
transmission fluid. This
message clears when the
transmission fluid has cooled
sufficiently. D :
This position is for normal
driving. If more power is
needed for passing, press the
accelerator pedal down.
To shift into D (Drive):
1. Bring the vehicle to a complete stop.
2. From the center position, move the shift lever back.
.If the vehicle is in
P (Park) press the shift
lock release button while
pulling the shift
lever back.
.D will illuminate in red.
.After releasing the shift
lever, it will return to the
center position.
To shift out of D (Drive): 1. Bring the vehicle to a complete stop.
2. Shift to the desired gear.
3. After releasing the shift lever, it will return to the
center position.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
280 Driving and Operating
Downshifting the transmission
in slippery road conditions
could result in skidding. See
“Skidding”under Loss of
Control 0237.
Caution
Spinning the tires or holding
the vehicle in one place on a
hill using only the
accelerator pedal may
damage the transmission.
The repair will not be
covered by the vehicle
warranty. If the vehicle is
stuck, do not spin the tires.
When stopping on a hill, use
the brakes to hold the
vehicle in place.
Manual Mode
(Mechanical Shifter)
Tap Shift
Caution
Driving with the engine at a
high rpm without upshifting
while using Tap Shift, could
damage the vehicle. Always
upshift when necessary
while using Tap Shift.
Vehicles with Tap Shift have
controls on the back of the
steering wheel to manually
shift the automatic
transmission.
To enter Permanent Tap
Shift Mode: 1. Move the shift lever from D (Drive) to M (Manual
Mode). While in Tap Shift
Mode, the M on the
instrument cluster will
become highlighted, and
the current gear is
indicated.
2. Tap the left control to downshift, and the right
control to upshift. To shift
to the lowest available
gear, press and hold the
left control.
3. To exit, move the shift lever back to D (Drive).
With the shift lever in D (Drive)
and not in Permanent Tap
Shift Mode, the tap shift
controls will activate a
temporary tap manual shift
mode, allowing the

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 281
transmission to be manually
shifted. While in Temporary
Tap Shift Mode, the D on the
instrument cluster will be
highlighted and the current
gear shown. Automatic shifts
return after no manual shifts
have been done for seven to
10 seconds. The Temporary
Tap Shift Mode can also be
deactivated by holding the
right upshift control briefly.
While using Tap Shift, the
vehicle will have firmer, quicker
shifting. You can use this 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 you to shift into gears
appropriate for the vehicle
speed and engine revolutions
per minute (rpm). The
transmission will not
automatically shift to the next
lower gear if the engine rpm is
too high, nor to the nexthigher gear when the
maximum engine rpm is
reached.
If shifting is prevented for any
reason, a SHIFT DENIED
message will be displayed in
the instrument cluster.
Manual Mode
(Electronic Shifter)
Tap Shift
Caution
Driving with the engine at a
high rpm without upshifting
while using Tap Shift, could
damage the vehicle. Always
upshift when necessary
while using Tap Shift.
If equipped, vehicles with Tap
Shift have controls on the
back of the steering wheel to
manually shift the automatic
transmission.
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. While
in Permanent Tap Shift

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
282 Driving and Operating
Mode, the M on the
instrument cluster will be
highlighted and the current
gear shown.
2. After releasing the shift lever, it will return to the
center position.
3. Pull the control toward you to shift. Pull the left
control to downshift, and
the right control to upshift.
To shift to the lowest
available gear, pull 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) prior to
shifting back to D (Drive).
Temporary Tap 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 Shift
Mode, allowing the
transmission to be
manually shifted. While in
Temporary Tap Shift
Mode, the D on the
instrument cluster will be
highlighted and the current
gear shown.
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, the
M or D will flash 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 CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
286 Driving and Operating
.When ARM is deactivated,
the gear number is white.
.If no gear number is
displayed while the shift
lever is in gear, service is
required. All rev matching
will be disabled and the
malfunction indicator lamp
will be on. See Malfunction
Indicator Lamp (Check
Engine Light)0118. The
clutch and manual
transmission will continue to
operate normally.
ARM will also:
.Be active above 28 km/h
(18 mph).
.Match engine speed up to
6100 rpm.
.Not operate when the
accelerator pedal is applied.
.Be disabled when the
coolant temperature is
below 0 °C (32 °F).
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 turned off.
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.
If there is a problem with ABS,
this warning light stays on.
See Antilock Brake System
(ABS) Warning Light
0121.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
288 Driving and Operating
will display. Release the EPB
and try to apply it again. If the
light does not come on,
or keeps flashing, have the
vehicle serviced. Do not drive
the vehicle if the red parking
brake status light is flashing.
See your dealer.
If the amber service parking
brake warning light is on,
press the EPB switch.
Continue to hold the switch
until the red parking brake
status light remains on. If the
amber service parking brake
warning light is on, see your
dealer.
If the EPB is applied while the
vehicle is moving, the vehicle
will decelerate as long as the
switch is pressed. If the switch
is pressed until the vehicle
comes to a stop, the EPB will
remain applied.
The vehicle may automatically
apply the EPB in some
situations when the vehicle is
not moving. This is normal, and
is done to periodically checkthe correct operation of the
EPB system, or at the request
of other safety functions that
utilize the EPB.
If the EPB fails to apply, block
the rear wheels to prevent
vehicle movement.
EPB Release
To release the EPB:
1. Turn the ignition on or to accessory mode.
2. Apply and hold the brake pedal.
3. Press the EPB switch momentarily.
The EPB is released when the
red parking brake status light
is off.
If the amber service parking
brake warning light is on,
release the EPB by pressing
and holding the EPB switch.
Continue to hold the switch
until the red parking brake
status light is off. If either light
stays on after release is
attempted, see your dealer.
Caution
Driving with the parking
brake on can overheat the
brake system and cause
premature wear or damage
to brake system parts. Make
sure that the parking brake
is fully released and the
brake warning light is off
before driving.
If you are towing a trailer and
parking on a hill, see Driving
Characteristics and Towing
Tips 0358.
Automatic EPB Release
The EPB will automatically
release if the vehicle is
running, placed into gear, and
an attempt is made to drive
away. Avoid rapid acceleration
when the EPB is applied, to
preserve parking brake
lining life.
The EPB can also be used to
prevent roll back for vehicles
with a manual transmission