2007 CADILLAC CTS engine

Ignition Positions
With the key in the ignition switch, you can turn
the key to four different positions.
Notice:Using a tool to force the key from its
cylinder could cause damage or break the key.
Use the correct key and turn the key only with
your hand. Make sure the key is all the way in.
If it is and you have a manual transmission
vehicle, turn the steering wheel left and right
while you turn the key hard. If none of this
works, then your vehicle needs service.A (OFF):This is the only position in which the
key can be inserted or removed. This position
locks the ignition and shifter on automatic
transmission vehicles, and the ignition and steering
wheel on manual transmission vehicles.
B (ACCESSORY):This position allows you to use
things like the radio and the windshield wipers
when the engine is off. This position will allow you
to turn off the engine.
C (ON):This position is for driving. If your vehicle
has an automatic transmission and you turn off
the engine, the transmission will lock. If you need
to shift the transmission out of PARK (P), the
ignition key has to be in ACCESSORY or ON.
The battery could be drained if you leave the key
in the ACCESSORY or ON position with the
engine off. You may not be able to start your
vehicle if the battery is allowed to drain for
an extended period of time.
D (START):This position starts the engine.
117

Retained Accessory Power (RAP)
The following accessories on your vehicle may be
used for up to 10 minutes after the ignition key
is turned from ON to OFF:
Radio
Power Windows
Audio Steering Wheel Controls
Sunroof
Power to these accessories stops after 10 minutes
or if a door is opened. If an additional 10 minutes
of power is needed, close all the doors and
turn the ignition key to ON and then back to OFF.
Starting the Engine
Automatic Transmission
Move your shift lever to PARK (P) or
NEUTRAL (N). Your engine will not start in
any other position — that is a safety feature.
To restart when you are already moving,
use NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could
damage the transmission. Shift to PARK (P)
only when your vehicle is stopped.
Manual Transmission
The shift lever should be in NEUTRAL and the
parking brake engaged. Hold the clutch pedal
to the oor and start the engine. Your vehicle
will not start if the clutch pedal is not all the way
down — that is a safety feature.
1. With your foot off the accelerator pedal, turn
your ignition key to START. Then, let go of
the key; the engine will start automatically.
The idle speed will go down as your engine
gets warm. Do not race the engine
immediately after starting it. Operate the
engine and transmission gently until the oil
warms up and lubricates all moving parts.
Your vehicle has a Computer-Controlled
Cranking System. This feature assists in
starting the engine and protects the electrical
system. If the ignition key is turned to the
START position, and then released when the
engine begins cranking, the engine will
continue cranking until the vehicle starts or
until it exceeds the maximum cranking
time allowed, approximately 15 seconds
to prevent cranking motor damage.
119

To prevent starter-motor gear damage, this
system also prevents cranking if the engine is
already running. The engine cranking can
be stopped by turning the ignition switch to the
ACCESSORY or OFF position.
2. If your engine will not start, or starts but then
stops, it could be ooded with too much
gasoline. Try pushing your accelerator pedal
all the way to the oor and holding it there
as you turn the key to START. If the vehicle
starts briey but then stops again, do the
same thing.
Notice:Your engine is designed to work with
the electronics in your vehicle. If you add
electrical parts or accessories, you could
change the way the engine operates. Before
adding electrical equipment, check with
your dealer. If you do not, your engine might
not perform properly. Any resulting damage
would not be covered by your vehicle’s
warranty.Engine Coolant Heater
Your vehicle may have an engine coolant heater.
In very cold weather, 0°F (−18°C) or colder,
the engine coolant heater can help. You will get
easier starting and better fuel economy during
engine warm-up.
Usually, the coolant heater should be plugged in
a minimum of four hours prior to starting your
vehicle. At temperatures above 32°F (0°C), use of
the coolant heater is not required. Your vehicle
may also have an internal thermostat in the
plug end of the cord. This will prevent operation of
the engine coolant heater when the temperature
is at or above 0°F (−18°C) as noted on the cord.
120

To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical
cord. For the 2.8L V6 and the 3.6L V6
engines, the cord is located in the engine
compartment on the passenger’s side of the
vehicle in front of the fuse block. For the
6.0L V8 engine, the cord is located in
the engine compartment on the driver’s side
of the vehicle near the inner fender and above
the strut.
Remove the plastic cap to access the plug.
3. Plug it into a normal, grounded 110-volt AC
outlet.{CAUTION:
Plugging the cord into an ungrounded
outlet could cause an electrical shock.
Also, the wrong kind of extension cord
could overheat and cause a re. You
could be seriously injured. Plug the cord
into a properly grounded three-prong
110-volt AC outlet. If the cord will not
reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you do
not, it could be damaged.
How long should you keep the coolant heater
plugged in? The answer depends on the outside
temperature, the kind of oil you have, and
some other things. Instead of trying to list
everything here, we ask that you contact your
dealer in the area where you will be parking your
vehicle. The dealer can give you the best
advice for that particular area.
121

Automatic Transmission Operation
The shift lever is located on the center console
between the front seats.
There are several
different positions for
the shift lever.
PARK (P):This position locks the rear wheels.
It is the best position to use when you start the
engine because your vehicle cannot move easily.{CAUTION:
It is dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P)
with the parking brake rmly set.
Your vehicle can roll.
Do not leave your vehicle when the engine
is running unless you have to. If you have
left the engine running, the vehicle can
move suddenly. You or others could be
injured. To be sure your vehicle will not
move, even when you are on fairly level
ground, always set your parking brake
and move the shift lever to PARK (P).
SeeShifting Into Park (P) (Automatic
Transmission) on page 130. If you are
pulling a trailer, seeTowing a Trailer on
page 328.
122

Make sure the shift lever is fully in PARK (P)
before starting the engine. Your vehicle has an
automatic transmission shift lock control system.
You must fully apply your regular brakes rst
and then press the shift lever button before you
can shift from PARK (P) when the ignition key is
in ON. If you cannot shift out of PARK (P),
ease pressure on the shift lever and push the shift
lever all the way into PARK (P) as you maintain
brake application. Then press the shift lever button
and move the shift lever into another gear.
SeeShifting Out of Park (P) on page 132.
Notice:Shifting to REVERSE (R) while your
vehicle is moving forward could damage the
transmission. The repairs would not be covered
by your warranty. Shift to REVERSE (R) only
after your vehicle is stopped.
REVERSE (R):Use this gear to back up.
At low vehicle speeds, you can also use
REVERSE (R) to rock your vehicle back and forth
to get out of snow, ice, or sand without damaging
your transmission. SeeIf Your Vehicle is Stuck
in Sand, Mud, Ice, or Snow on page 320for
additional information.NEUTRAL (N):In this position, the engine does
not connect with the wheels. To restart when
you are already moving, use NEUTRAL (N) only.
You can also use NEUTRAL (N) when your
vehicle is being towed.
{CAUTION:
Shifting into a drive gear while your
engine is running at high speed is
dangerous. Unless your foot is rmly on
the brake pedal, your vehicle could move
very rapidly. You could lose control and
hit people or objects. Do not shift into a
drive gear while your engine is running at
high speed.
Notice:Shifting out of PARK (P) or
NEUTRAL (N) with the engine running at high
speed may damage the transmission. The
repairs would not be covered by your warranty.
Be sure the engine is not running at high
speed when shifting your vehicle.
123

While driving in sport mode, the transmission
may remain in a gear longer than it would
in the normal driving mode based on braking,
throttle input, and vehicle lateral acceleration.
2. To enter the DSC mode, press the shift lever
forward to upshift or rearward to downshift.
The odometer on the instrument panel cluster will
change from the mileage to a number indicating
the requested gear range when moving the
shift lever forward or rearward. SeeSpeedometer
and Odometer on page 200for more information
on the odometer.
While using the DSC feature, the vehicle will have
rmer shifting and increased performance. You
can use this for sport driving or when climbing or
descending hills, to stay in gear longer, or to
down shift 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 higher
gear if the engine RPM is too high.
If shifting is prevented for any reason, the currently
selected gear will ash multiple times, indicating
that the transmission has not shifted gears.
While in the DSC mode, the transmission will
automatically downshift when the vehicle comes to
a stop and while quickly applying the accelerator
to increase speed. This will allow for more
power during take-off.
When accelerating your vehicle from a stop in
snowy and icy conditions, you may want to shift
into second gear. A higher gear ratio allows you to
gain more traction on slippery surfaces.
125

NEUTRAL:Use this position when you start or
idle your engine. Your shift lever is in NEUTRAL
when it is centered in the shift pattern, not in
any gear.
REVERSE (R):To back up, press down the
clutch pedal, completely stop the vehicle, and shift
into REVERSE (R). Let up on the clutch pedal
slowly while pressing the accelerator pedal.
For the CTS, pull the shift lever quickly to the left
and then forward into gear.
For the CTS-V, the transmission has a safety
feature that prevents you from shifting into
REVERSE (R) while the vehicle is driven at
speeds greater than 3 mph (5 km/h). You will be
locked out if you try to shift into REVERSE (R)
while your vehicle is moving faster than 3 mph
(5 km/h). If you have turned your ignition off and
wish to park your vehicle in REVERSE (R),
you will have to overcome the lockout mechanism
by moving the shift lever quickly to the right,
and immediately forward into gear using more
force than a normal shift.Shift Speeds (Manual Transmission)
{CAUTION:
If you skip a gear when you downshift,
you could lose control of your vehicle.
You could injure yourself or others.
Do not shift down more than one gear
at a time when you downshift.
Notice:If you skip more than one gear when
you downshift, or if you race the engine when
you release the clutch pedal while downshifting,
you could damage the engine, clutch, driveshaft
or the transmission. Do not skip gears or race
the engine when downshifting.
If the vehicle speed drops below 20 mph (32 km/h),
or if the engine is not running smoothly, you should
downshift to the next lower gear. You may have to
downshift two or more gears to keep the engine
running smoothly or for good performance.
127