2006 CADILLAC DTS PROFESSIONAL tires

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................. 1-9
Child Restraints
.......................................1-30
Airbag System
.........................................1-54
Restraint System Check
............................1-71
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-19
Starting and Operating Your Vehicle
...........2-23
Mirrors
....................................................2-35
OnStar
®System
......................................2-43
Universal Home Remote System
................2-45
Storage Areas
.........................................2-49
Sunroof
..................................................2-51
Vehicle Personalization
.............................2-52
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-44
Warning Lights, Gages, and Indicators
........3-55Driver Information Center (DIC)
..................3-71
Audio System(s)
.......................................3-97
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-37
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Headlamp Aiming
.....................................5-44
Bulb Replacement
....................................5-47
Windshield Wiper Blade Replacement
.........5-47
Tires
......................................................5-49
Appearance Care
.....................................5-83
Vehicle Identication
.................................5-91
Electrical System
......................................5-92
Capacities and Specications
...................5-101
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-13
Index................................................................ 1
2006 Cadillac DTS Owner ManualM

THIRD (3):This position is also used for normal driving,
however, it offers more power and lower fuel economy
than AUTOMATIC OVERDRIVE (D). You should
use THIRD (3) when towing a trailer, carrying a heavy
load, driving on steep hills or winding roads.
Here are examples for using THIRD (3) instead of
AUTOMATIC OVERDRIVE (D):
When driving on hilly, winding roads.
When towing a trailer, so there is less shifting
between gears.
When going down a steep hill.
SECOND (2):This position gives you more power than
THIRD (3). You can use SECOND (2) on hills. It can
help control your speed as you go down steep mountain
roads, but then you would also want to use your
brakes off and on.
Notice:Do not shift into SECOND (2) unless you
are going slower than 65 mph (105 km/h), or you can
damage your engine and/or transaxle.FIRST (1):This position gives you even more power
than SECOND (2). You can use it on very steep hills, or
in deep snow or mud. If the shift lever is put in
FIRST (1), the transaxle will not shift into rst gear until
the vehicle is going slowly enough.
Notice:Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator
pedal may damage the transaxle. If you are stuck,
do not spin the tires. When stopping on a hill,
use the brakes, or parking brake to hold the vehicle
in place.Performance Shifting
If your vehicle has this feature, it can detect a change in
driving patterns. If you make an aggressive driving
maneuver, the vehicle’s transaxle automatically shifts to
the lowest possible gear to maximize vehicle
performance. The vehicle will automatically return to
normal operation when you return to normal driving
patterns.
2-29

Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which monitors
operation of the fuel,
ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the life of the vehicle, helping to produce a cleaner
environment. The check engine light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls may not
work as well, your fuel economy may not be as good,
and your engine may not run as smoothly. This could
lead to costly repairs that may not be covered by
your warranty.Notice:Modications made to the engine,
transaxle, exhaust, intake, or fuel system of your
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 5-3.
This light should come on, as a check to show you it
is working, when the ignition is on and the engine is not
running. If the light does not come on, have it repaired.
This light will also come on during a malfunction in
one of two ways:
Light Flashing— A misre condition has been
detected. A misre increases vehicle emissions
and may damage the emission control system
on your vehicle. Diagnosis and service may
be required.
Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
3-66

UNITS
This display allows you to select between English or
Metric units of measurement. Once in this display, press
the set/reset button to select between ENGLISH or
METRIC units.
PARKING ASSIST
If your vehicle has the Ultrasonic Front and Rear
Parking Assist (UFRPA) system, this display allows the
system to be turned on or off. Once in this display,
press the set/reset button to select between ON or OFF.
If you choose ON, the system will be turned on. If you
choose OFF, the system will be turned off. The
UFRPA system automatically turns back on after each
vehicle start. When the UFRPA system is turned off and
the vehicle is shifted out of PARK (P), the DIC will
display the PARKING ASSIST OFF message as
a reminder that the system has been turned off. See
DIC Warnings and Messages on page 3-76and
Ultrasonic Front and Rear Parking Assist (UFRPA) on
page 3-38for more information.
FRONT TIRES or REAR TIRES
If your vehicle has a Tire Pressure Monitor (TPM)
system, the pressure for each tire can be viewed in the
DIC. The tire pressure will be shown in either pounds per
square inch (psi) or kilopascals (kPa). Press the vehicle
information button until the DIC shows the tire pressure
for the front tires. Press the vehicle information button
again to view the pressure for the rear tires.
If a low or high tire pressure condition is detected by the
system while driving, a message advising you to check
the pressure in a specic tire will appear in the display.
SeeInation - Tire Pressure on page 5-56andDIC
Warnings and Messages on page 3-76for more
information.
RELEARN TIRE POSITIONS
If your vehicle has a Tire Pressure Monitor (TPM)
system, after rotating the tires or after replacing a tire or
sensor, the system must re-learn the tire positions.
To re-learn the tire positions, seeTire Pressure Monitor
System on page 5-59. SeeTire Inspection and
Rotation on page 5-63andDIC Warnings and Messages
on page 3-76for more information.
3-75

CHANGE ENGINE OIL SOON
When this message displays, it means that service is
required for your vehicle. See your GM dealer. See
Engine Oil on page 5-13andScheduled Maintenance
on page 6-4for more information.
When you reset the CHANGE ENGINE OIL SOON
message by clearing it from the display, you still must
reset the engine oil life system separately. For more
information on resetting the engine oil life system, see
Engine Oil Life System on page 5-16.
CHECK TIRE PRESSURE
This symbol appears with
this message.
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message will display when the tire pressure
in one of the tires needs to be checked. This message
will also display LEFT FRONT, RIGHT FRONT,
LEFT REAR, or RIGHT REAR to indicate which tire
needs to be checked.You can receive more than one tire pressure message
at a time. To read the other messages that may
have been sent at the same time, press the set/reset
button. If a tire pressure message appears on the DIC,
stop as soon as you can. Have the tire pressures
checked and set to those shown on your Tire Loading
Information Label. SeeTires on page 5-49,Loading
Your Vehicle on page 4-31, andInation - Tire Pressure
on page 5-56. The DIC display also shows the tire
pressure values for the front and rear tires by pressing
the vehicle information button. SeeDIC Controls
and Displays on page 3-72. If the tire pressure is low,
the low tire pressure warning light will come on. SeeLow
Tire Pressure Warning Light on page 3-63.
3-77

THEFT ATTEMPTED
This symbol appears with
this message.
This message will display if the content theft-deterrent
system has detected a break-in attempt while you
were away from your vehicle. SeeContent
Theft-Deterrent on page 2-19for more information.
TIGHTEN GAS CAP
This message will display when the gas cap has not
been fully tightened. Recheck the gas cap to ensure that
it is on and tightened properly.
TIRE LEARNING ACTIVE
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message will display when the system is
re-learning the tire positions on your vehicle. See
Tire Pressure Monitor System on page 5-59. The tire
positions must be re-learned after rotating the tires
or after replacing a tire or sensor. SeeTire Inspection
and Rotation on page 5-63andInation - Tire Pressure
on page 5-56for more information.
TRACTION CONTROL OFF
This message will display when the traction control
system is turned off. Adjust your driving accordingly.
SeeTraction Control System (TCS) on page 4-9
for more information.
TRACTION CONTROL ON
This message will display when the Traction Control
System (TCS) is turned on. SeeTraction Control System
(TCS) on page 4-9for more information.
TRANSMISSION HOT IDLE ENGINE
This message will display when the transaxle uid in
your vehicle is too hot. Stop the vehicle and allow it to
idle until the transaxle cools down or until this
message is removed.
3-87

Statistics show that the chance of being in a collision
increases sharply for drivers who have a BAC of
0.05 percent or above. A driver with a BAC level of
0.06 percent has doubled his or her chance of having a
collision. At a BAC level of 0.10 percent, the chance
of this driver having a collision is 12 times greater; at a
level of 0.15 percent, the chance is 25 times greater!
The body takes about an hour to rid itself of the alcohol
in one drink. No amount of coffee or number of cold
showers will speed that up. “I will be careful” is not the
right answer. What if there is an emergency, a need to
take sudden action, as when a child darts into the street?
A person with even a moderate BAC might not be able to
react quickly enough to avoid the collision.
There is something else about drinking and driving that
many people do not know. Medical research shows that
alcohol in a person’s system can make crash injuries
worse, especially injuries to the brain, spinal cord, or
heart. This means that when anyone who has been
drinking — driver or passenger — is in a crash, that
person’s chance of being killed or permanently disabled
is higher than if the person had not been drinking.
{CAUTION:
Drinking and then driving is very dangerous.
Your reexes, perceptions, attentiveness, and
judgment can be affected by even a small
amount of alcohol. You can have a serious — or
even fatal — collision if you drive after drinking.
Please do not drink and drive or ride with a
driver who has been drinking. Ride home in a
cab; or if you are with a group, designate a
driver who will not drink.
Control of a Vehicle
You have three systems that make your vehicle go
where you want it to go. They are the brakes, the
steering, and the accelerator. All three systems have to
do their work at the places where the tires meet the road.
Sometimes, as when you are driving on snow or ice, it
is easy to ask more of those control systems than
the tires and road can provide. That means you can lose
control of your vehicle. SeeTraction Control System
(TCS) on page 4-9.
Adding non-GM accessories can affect your vehicle’s
performance. SeeAccessories and Modications
on page 5-3.
4-5

The SERVICE STABILITRAK message will be displayed
and the traction control system and StabiliTrak®warning
light on the instrument panel cluster will come on if there
is a problem with the system. When this light and the
SERVICE STABILITRAK message are on, the system is
not operational. Adjust your driving accordingly.
Panic Brake Assist
Your vehicle has a panic brake assist system that
monitors the intention of the driver while braking. If the
system senses that the driver has applied hard/fast
pressure to the brake pedal, the system will generate
additional pressure, making it easier for the driver to
maintain brake application. When this happens the brake
pedal will feel easier to push. Just hold the brake pedal
down rmly and let the system work for you. You may feel
the brakes vibrate, or you may notice some noise but this
is normal. The brakes will return to normal operation after
the brake pedal has been released.
Steering
Power Steering
If you lose power steering assist because the engine
stops or the system is not functioning, you can steer but
it will take much more effort.
Magnetic Speed Variable Assist
Steering System
This system continuously adjusts the effort you feel
when steering at all vehicle speeds. It provides ease
when parking, yet a rm, solid feel at highway speeds.
Steering Tips
It is important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on
the news happen on curves. Here is why:
Experienced driver or beginner, each of us is subject to
the same laws of physics when driving on curves.
The traction of the tires against the road surface makes
it possible for the vehicle to change its path when
you turn the front wheels. If there is no traction, inertia
will keep the vehicle going in the same direction. If
you have ever tried to steer a vehicle on wet ice, you
will understand this.
The traction you can get in a curve depends on the
condition of your tires and the road surface, the angle at
which the curve is banked, and your speed. While
you are in a curve, speed is the one factor you
can control.
4-11