2006 CADILLAC STS Owners Manual

Ensure 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 before you can shift from PARK (P) when
the vehicle is running. If you cannot shift out of PARK (P),
ease pressure on the shift lever. Push the shift lever all
the way into PARK (P) while pressing the button on the
shift lever as you maintain brake application. Then move
the shift lever into the gear you wish. SeeShifting Out of
Park (P) on page 2-38.
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 4-31
for 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.
AUTOMATIC OVERDRIVE (D):This position is for
normal driving. If you need more power for passing,
and you are:
Going less than 35 mph (55 km/h), push the
accelerator pedal about halfway down.
Going about 35 mph (55 km/h) or more, push the
accelerator all the way down.
The transmission will shift down to a lower gear
and have more power.
2-33

Driver Shift Control (DSC)
Notice:If you drive your vehicle at high RPMs
without upshifting while using Driver Shift Control
(DSC), you could damage your vehicle. Always
upshift when necessary while using DSC.
Your automatic transmission has a Driver Shift Control
(DSC) feature that allows you to change gears similar to
a manual transmission. To use the DSC feature:
1. Slide the shift lever over from AUTOMATIC
OVERDRIVE (D) to the right into the DSC area.
When the transmission is
in DSC mode the sport
symbol in the Driver
Information Center (DIC)
will come on.
If you do not move the shift lever forward or
rearward, the vehicle will be in sport mode. When
you are in the sport mode the vehicle will still
shift automatically. While driving in sport mode, the
transmission may remain in a gear longer than it
would in normal driving mode based on braking,
throttle input, and vehicle lateral acceleration.2. Press the shift lever forward to upshift or rearward
to downshift.
The DIC will show the
requested gear range
when moving the shift lever
forward or rearward. See
Driver Information Center
(DIC) on page 3-73for
more information on
the DIC.
While using the DSC feature the vehicle will have rmer
shifting and increased performance. You can use this for
sport driving or when climbing/descending hills to stay
in gear longer or to down shift for more power or engine
braking.
2-34

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.
The transmission will allow you to shift to the gear
selected and will automatically downshift when the
vehicle comes to a stop. This will allow for more power
during take-off and passing.
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.Parking Brake
The parking brake pedal
is located on the lower
portion of the instrument
panel to the left of the
steering wheel.
This vehicle has a push-to-release parking brake pedal.
To set the parking brake, hold the regular brake pedal
down with your right foot and push the parking brake
pedal down with your left foot.
If the ignition is on, the brake system warning light on the
instrument panel cluster should come on. If it does not,
you need to have your vehicle serviced. SeeBrake
System Warning Light on page 3-64for more information.
2-35

To release the parking brake, hold the brake pedal
down with your right foot and push the parking brake
pedal with your left foot. When you lift your left foot,
the parking brake pedal will follow it to the released
position.
Notice:Driving with the parking brake on can
overheat the brake system and cause premature
wear or damage to brake system parts. Verify that
the parking brake is fully released and the brake
warning light is off before driving.
A warning chime will sound if the parking brake is set,
the ignition is on and the vehicle begins to move.
To stop the chime, fully release the parking brake.
If you are towing a trailer and parking on a hill,
seeTowing a Trailer (STS Only) on page 4-40for more
information.Shifting Into Park (P)
{CAUTION:
It can be 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.
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, use
the steps that follow. If you are pulling a trailer,
seeTowing a Trailer (STS Only) on page 4-40.
To shift into PARK (P), use the following steps:
1. Hold the brake pedal down with your right foot.
2. Move the shift lever into PARK (P) by pressing the
button on the front of the shift lever while pushing
the lever all the way toward the front of the vehicle.
Release the button.
3. With your right foot still holding the brake pedal
down, set the parking brake with your left foot.
SeeParking Brake on page 2-35for more
information.
4. Turn the ignition off.
2-36

Leaving Your Vehicle With the
Engine Running
{CAUTION:
It can be dangerous to leave your vehicle with
the engine running. Your vehicle could move
suddenly if the shift lever is not fully in
PARK (P) with the parking brake rmly set.
And, if you leave the vehicle with the engine
running, it could overheat and even catch re.
You or others could be injured. Do not leave
your vehicle with the engine running.
If you have to leave your vehicle with the engine running,
be sure your vehicle is in PARK (P) and your parking
brake is rmly set before you leave it. After you have
moved the shift lever into PARK (P), hold the regular
brake pedal down. Then, see if you can move the shift
lever away from PARK (P) without rst pushing the button
on the shift lever. If you can, it means that the shift lever
was not fully locked into PARK (P).
Torque Lock
If you are parking on a hill and you do not shift your
transmission into PARK (P) properly, the weight of the
vehicle may put too much force on the parking pawl in the
transmission. You may nd it difficult to pull the shift lever
out of PARK (P). This is called “torque lock.” To prevent
torque lock, set the parking brake and then shift into
PARK (P) properly before you leave the driver’s seat.
To nd out how, see “Shifting Into PARK (P)”
listed previously.
If torque lock does occur, you may need to have
another vehicle push yours a little uphill to take some of
the pressure from the parking pawl in the transmission,
so you can pull the shift lever out of PARK (P).
2-37

Shifting Out of Park (P)
Your vehicle has an automatic transmission shift lock
control system. You have to fully apply your regular
brake before you can shift from PARK (P) when
the vehicle is running. SeeAutomatic Transmission
Operation (5-Speed Automatic) on page 2-28or
Automatic Transmission Operation (6-Speed Automatic)
on page 2-32.
If you cannot shift out of PARK (P), ease pressure on the
shift lever — push the shift lever all the way into
PARK (P) and release the shift lever button as you
maintain brake application. Then press the shift lever
button and move the shift lever into the gear you wish.
If you ever hold the brake pedal down but still cannot
shift out of PARK (P), try this:
1. Press the ACC button twice to place the ignition in
accessory mode.
2. Apply and hold the brake until the end of Step 4.
3. Shift to NEUTRAL (N).
4. Start the engine and then shift to the drive gear
you want.
5. Have your vehicle inspected by your dealer as soon
as possible.
Parking Over Things That Burn
{CAUTION:
Things that can burn could touch hot exhaust
parts under your vehicle and ignite. Do not
park over papers, leaves, dry grass, or other
things that can burn.
2-38

Engine Exhaust
{CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you cannot see
or smell. It can cause unconsciousness and
death.
You might have exhaust coming in if:
Your exhaust system sounds strange
or different.
Your vehicle gets rusty underneath.
Your vehicle was damaged in a collision.
CAUTION: (Continued)
CAUTION: (Continued)

Your vehicle was damaged when driving
over high points on the road or over
road debris.
Repairs were not done correctly.
Your vehicle or exhaust system has been
modied improperly.
If you ever suspect exhaust is coming into
your vehicle:
Drive it only with all the windows down to
blow out any CO; and
Have your vehicle xed immediately.
2-39

Running the Engine While Parked
It is better not to park with the engine running. But if you
ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier caution under
Engine Exhaust on page 2-39.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the climate control fan is at the highest setting.
One place this can happen is a garage.
Exhaust — with CO — can come in easily.
NEVER park in a garage with the engine
running.
Another closed-in place can be a blizzard. See
Winter Driving on page 4-27.
{CAUTION:
It can be 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 after you move the shift lever to
PARK (P).
Follow the proper steps to be sure your vehicle will not
move. SeeShifting Into Park (P) on page 2-36.
If you are parking on a hill and if you are pulling a
trailer, also seeTowing a Trailer (STS Only) on
page 4-40.
2-40