tires CADILLAC CTS 2007 1.G Owners Manual

Service and Appearance Care
.................. 329
Service
................................................. 332
Fuel
...................................................... 334
Checking Things Under
the Hood
........................................... 340
Rear Axle
............................................. 382
Headlamp Aiming
................................. 383
Bulb Replacement
................................ 386
Windshield Wiper Blade
Replacement
..................................... 390
Tires
..................................................... 392
Appearance Care
.................................. 435Vehicle Identication
............................. 445
Electrical System
.................................. 446
Capacities and Specications
................ 457
Maintenance Schedule
.............................. 459
Maintenance Schedule
.......................... 460
Customer Assistance Information
............. 481
Customer Assistance and Information
... 482
Reporting Safety Defects
...................... 500
Index
.......................................................... 503
2

DRIVE (D):This position is for normal driving.
It provides the best fuel economy for your vehicle.
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.
Downshifting the transmission in slippery road
conditions could result in skidding, see Skidding
underLoss of Control on page 303
Notice:Spinning the tires or holding the
vehicle in one place on a hill using only
the accelerator pedal may damage the
transmission. If you are stuck, do not spin
the tires. When stopping on a hill, use
the brakes to hold the vehicle in place.
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 DRIVE (D) to
the right into the DSC area.
The sport mode light in
the instrument panel
cluster 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.
124

Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature. If the gage
pointer moves into
the shaded area, the
engine is too hot.
That reading means the same thing as the
warning light – the engine coolant is very hot.
SeeEngine Overheating on page 360.
Tire Pressure Light (CTS-V Only)
If the vehicle has the
Tire Pressure Monitor
System, this light
will come on if the
system detects low
tire pressure.
This light will also come on for a bulb check when
the vehicle is started.
SeeTire Pressure Monitor System on page 405
for more information.
For more information on the proper tire pressure,
seeLoading Your Vehicle on page 321. For
more information on your tires, seeTires on
page 392.
208

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, the emission controls
might not work as well, your vehicle’s fuel
economy might not be as good, and the engine
might not run as smoothly. This could lead
to costly repairs that might not be covered by
your warranty.
Notice:Modications made to the engine,
transmission, 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 can cause
this light to come on. Modications to these
systems could lead to costly repairs not
covered by your warranty. This could also
result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 332.
209

Tire Pressure
When the tire pressure is displayed you will see
a vehicle in the display. The numbers in each
corner represent the tire pressure for the
corresponding tire. The tire pressure will be
displayed in psi or kPa.
If any of the tires are blinking on the vehicle in the
display, this means that the tire pressure in that
tire is either high or low. SeeTire Pressure Monitor
System on page 405for more information.
Lateral Acceleration
Lateral acceleration is a measure of how hard you
are taking a corner. For example, when you are
turning right you will feel your body push to the left.
This force is measured in a “g”. This gage will
display from 0.00 g to 1.2 g. The lowest reading
means there is no lateral acceleration. The highest
reading means the force the driver is feeling is
1.2 times the acceleration due to gravity.
When (B) is pressed and held while the Lateral
Acceleration display is being shown, the peak hold
values — both tick marks and numbers — will
be reset to zero.
Warning Messages
The warning messages that are described in the
following text are also shown in the tachometer
display.
While any warning messages are shown,
pressing (A) or (B) will acknowledge the warning
and then display the gage relating to the message.
For instance, if a tire is below the minimum
recommended pressure, the tire pressure warning
message will blink on and off (ve times for a
low tire warning, continuously for a at tire
warning). The driver can go to the tire pressure
display immediately by pressing either button
on the outboard switch.
218

Tire Pressure Warning Message
When you see this
ashing symbol, one or
more of the vehicle’s
tires is either under
or over-inated.
To acknowledge this warning, press either button
on the outboard switch on the left spoke of the
steering wheel. There are three levels of warning
for this display:
1. High Tire Pressure (above 42 psi (290 kPa))
2. Low Tire Pressure (below 25 psi (170 kPa))
3. Flat Tire (below 5 psi (35 kPa))For conditions 1 and 2, this warning will ash
ve times and the display will then show the tire
pressure gage. For condition 3, this warning
will ash continuously until the driver
acknowledges it. In any of the three cases, the
warning will redisplay every 10 minutes until
the situation is corrected. Conditions 2 and 3 will
also display a warning light elsewhere on the
cluster that will stay on after this warning is
acknowledged. SeeTire Pressure Light (CTS-V
Only) on page 208for more information. Also see
Tire Pressure Monitor System on page 405for
more information on tire pressure specications.
221

Check Tire Pressure
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message indicates that one or
more of the vehicle’s tires are low. SeeStatus of
Vehicle Systems on page 223for information
on checking your vehicle’s tire pressures. Also,
seeTire Pressure Monitor System on page 405
andInation - Tire Pressure on page 402for
more information.
Check Washer Fluid
When this message appears on the display, it
means that your vehicle is low on windshield
washer uid. You should rell the windshield
washer uid reservoir as soon as possible. See
Windshield Washer Fluid on page 369for
more information.
Competitive Driving (CTS-V)
When competitive driving mode is turned on with
the TC (traction control) button, this message
will be displayed on the DIC. The TC light will be
on when the competitive driving mode is on.
The Traction Control System (TCS) will not
operate while in competitive driving mode. You
should adjust your driving accordingly. Seethe CTS-V portion ofTraction Control System
(TCS) (CTS) on page 293orTraction Control
System (TCS) (CTS-V) on page 295for more
information.
Driver Door Ajar
When this message appears on the display, it
means that the driver’s door was not closed
completely. You should make sure that the driver’s
door is closed completely.
Engine Coolant Hot – AC
(Air Conditioning) Off
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. To avoid added strain on a hot
engine, the air conditioning compressor is
automatically turned off. When the coolant
temperature returns to normal, the air conditioning
compressor will turn back on. You can continue
to drive your vehicle.
If this message continues to appear, have the
system repaired by your dealer as soon as
possible to avoid damage to the engine or
transmission.
236

Top Speed – Fuel Cut Off
This message will appear when the Engine
Control Module (ECM) detects that the maximum
speed for your vehicle has been reached. Your
vehicle’s top speed is based on the top speed
rating of the tires. This ensures that your vehicle
stays in a safe operating range for the tires.
Traction Engaged
This message will appear when the Traction
Control System (TCS) is actively limiting wheel
spin. Slippery road conditions may exist if
this message is displayed, so adjust your driving
accordingly. The message will stay on for a
few seconds after the TCS stops limiting wheel
spin. SeeTraction Control System (TCS) (CTS) on
page 293orTraction Control System (TCS)
(CTS-V) on page 295for more information.
Trans (Transmission) Hot – Idle Engine
This message indicates that the transmission
uid in your vehicle is too hot. Stop the vehicle and
allow it to idle until the transmission cools down
or until this message is removed. See also
Transmission Fluid Hot Message on page 219for
more information.
Trunk Open
When this message appears on the display, it
means that the trunk lid of your vehicle was not
closed completely. You should make sure that the
trunk lid is closed completely.
Turn Signal On
If you drive your vehicle for more than about
1 mile (1.6 km) with a turn signal on, this message
will appear as a reminder to turn off the turn
signal. A multiple chime will sound when this
message is displayed.
DIC Vehicle Personalization
If your vehicle has the Navigation system, see the
Navigation system manual for instructions on
operating the DIC for your vehicle.
Your vehicle has personalization that allows you to
program certain features to a preferred setting
for up to two people. The number of programmable
features varies depending upon which model of
the vehicle is purchased.
242

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) (CTS) on page 293or
Traction Control System (TCS) (CTS-V) on
page 295.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 332.
Braking
SeeBrake System Warning Light on page 205.
Braking action involves perception time and
reaction time.
First, you have to decide to push on the brake
pedal. That is perception time. Then you have to
bring up your foot and do it. That is reaction time.
Average reaction time is about three-fourths of a
second. But that is only an average. It might
be less with one driver and as long as two or
three seconds or more with another. Age, physical
condition, alertness, coordination, and eyesight
all play a part. So do alcohol, drugs, and
frustration. But even in three-fourths of a second,
a vehicle moving at 60 mph (100 km/h) travels
66 feet (20 m). That could be a lot of distance in an
emergency, so keeping enough space between
your vehicle and others is important.
And, of course, actual stopping distances vary
greatly with the surface of the road, whether it is
pavement or gravel; the condition of the road,
whether it is wet, dry, or icy; tire tread; the
condition of the brakes; the weight of the vehicle;
and the amount of brake force applied.
290

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.
Suppose you are steering through a sharp curve.
Then you suddenly accelerate. Both control
systems — steering and acceleration — have to
do their work where the tires meet the road.Adding the sudden acceleration can demand too
much of those places. You can lose control.
SeeTraction Control System (TCS) (CTS) on
page 293orTraction Control System (TCS)
(CTS-V) on page 295.
What should you do if this ever happens? Ease up
on the accelerator pedal, steer the vehicle the
way you want it to go, and slow down.
Speed limit signs near curves warn that you should
adjust your speed. Of course, the posted speeds
are based on good weather and road conditions.
Under less favorable conditions you will want to
go slower.
If you need to reduce your speed as you approach
a curve, do it before you enter the curve, while
your front wheels are straight ahead.
Try to adjust your speed so you can “drive” through
the curve. Maintain a reasonable, steady speed.
Wait to accelerate until you are out of the curve,
and then accelerate gently into the straightaway.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 332.
299