
Black plate (48,1)Cadillac STS Owner Manual - 2011
Outlet Adjustment
Use the lever located in the center of each outlet to
change the direction of the airflow, either side-to-side or
up and down. Use the thumbwheels to open or close
the outlets to adjust the airflow.
Turn the thumbwheel towards the vehicle door to open
the outlets and allow the maximum amount of air to
enter your vehicle. Turn the thumbwheel towards the
center console to close the outlets and minimize the
amount of air entering the vehicle.
Operation Tips
.Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may block
the flow of air into your vehicle.
.Use of non-GM approved hood deflectors may
adversely affect the performance of the system.
.Keep the path under the front seats clear of
objects to help circulate the air inside of your
vehicle more effectively.
.If the airflow seems low when the fan speed is at
the highest setting, the passenger compartment
air filter may need to be replaced. For more
information, seePassenger Compartment Air
Filter on page 4‑50.
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Black plate (51,1)Cadillac STS Owner Manual - 2011
4. Lift the inboard edge of the deflector to release theretention tab.
5. Lift and slide the water deflector toward the inboard side and remove it.
6. The top edge of the filter should be visible. Reachin and lift the filter out , pulling upward and toward
the front of the vehicle.
7. Insert the new air filter by sliding it back into place. Make sure the arrow on the filter is pointing toward
the passenger compartment.
Reverse steps 1 through 3 to reinstall the water
deflector, filter cover and the hood seal.
Warning Lights, Gauges, and
Indicators
Warning lights and gauges can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to the
warning lights and gauges could prevent injury.
Warning lights come on when there might be or there is
a problem with one of the vehicle's functions. Some
warning lights come on briefly when the engine is
started to indicate they are working.
Gauges can indicate when there might be or there
is a problem with one of the vehicle's functions. Often
gauges and warning lights work together to indicate a
problem with the vehicle.
When one of the warning lights comes on and stays on
while driving, or when one of the gauges shows there
could be a problem, check the section that explains
what to do. Follow this manual's advice. Waiting to do
repairs can be costly and even dangerous.
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Black plate (58,1)Cadillac STS Owner Manual - 2011
Brake System Warning Light
The vehicle brake system consists of two hydraulic
circuits. If one circuit is not working, the remaining
circuit can still work to stop the vehicle. For normal
braking performance, both circuits need to be working
If the warning light comes on, there is a brake problem.
Have the brake system inspected right away.
EnglishMetric
This light comes on briefly when the engine is turned
on. If it does not come on then, have it fixed so it will
be ready to warn if there is a problem. When the ignition is on, the brake system warning light
also comes on when the parking brake is set. The light
will stay on if the parking brake does not release fully.
If it stays on after the parking brake is fully released, it
means there is a brake problem.
If the light comes on while driving, pull off the road and
stop carefully.The pedal may be harder to push, or the
pedal may go closer to the floor. It may take longer to
stop. If the light is still on, have the vehicle towed for
service. See
Towing Your Vehicle on page 5‑29.
{WARNING:
The brake system might not be working properly if
the brake system warning light is on. Driving with
the brake system warning light on can lead to a
crash. If the light is still on after the vehicle has
been pulled off the road and carefully stopped,
have the vehicle towed for service.
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Black plate (63,1)Cadillac STS Owner Manual - 2011
This light should come on
when the ignition is on,
but the engine is not
running, as a check to
show it is working. If it
does not, have the vehicle
serviced by your dealer.
If the check engine light comes on and stays on, while
the engine is running, this indicates that there is an
OBD II problem and service is required.
Malfunctions often are indicated by the system before
any problem is apparent. Being aware of the light can
prevent more serious damage to the vehicle. This
system assists the service technician in correctly
diagnosing any malfunction.
Notice: If the vehicle is continually driven with this
light on, after a while, the emission controls might
not work as well, the vehicle 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 the vehicle warranty. Notice:
Modifications made to the engine,
transmission, exhaust, intake, or fuel system of the
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect the vehicle's emission
controls and can cause this light to come on.
Modifications to these systems could lead to costly
repairs not covered by the vehicle warranty. This
could also result in a failure to pass a required
Emission Inspection/Maintenance test. See
Accessories and Modifications on page 6‑4.
This light comes on during a malfunction in one of
two ways:
Light Flashing: A misfire condition has been detected.
A misfire increases vehicle emissions and could
damage the emission control system on the vehicle.
Diagnosis and service might be required.
To prevent more serious damage to the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the amount of cargo
being hauled as soon as it is possible.
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Black plate (1,1)Cadillac STS Owner Manual - 2011
Section 5 Driving Your Vehicle
Your Driving, the Road, and the Vehicle. . . . . . . . . .5-2
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Drunk Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . . . . 5-5
Braking in Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
StabiliTrak
®System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Enhanced StabiliTrak®. . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Traction Control System (TCS) . . . . . . . . . . . . . . . . . . 5-9
Limited-Slip Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
All-Wheel Drive (AWD) System . . . . . . . . . . . . . . . . 5-11
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Passing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14 Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Driving at Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Driving in Rain and on Wet Roads . . . . . . . . . . . . . 5-16
Before Leaving on a Long Trip . . . . . . . . . . . . . . . . . 5-18
Highway Hypnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . 5-19
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
If Your Vehicle is Stuck in Sand, Mud, Ice,
or Snow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Rocking Your Vehicle to Get It Out . . . . . . . . . . . . . 5-23
Loading the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Towing Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . 5-29
Towing a Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
5-1

Black plate (23,1)Cadillac STS Owner Manual - 2011
Rocking Your Vehicle to Get It Out
Turn the steering wheel left and right to clear the area
around the front wheels. Turn off any traction or stability
system. Shift back and forth between R (Reverse) and a
forward gear, spinning the wheels as little as possible.
To prevent transmission wear, wait until the wheels stop
spinning before shifting gears. Release the accelerator
pedal while shifting, and press lightly on the accelerator
pedal when the transmission is in gear. Slowly spinning
the wheels in the forward and reverse directions causes
a rocking motion that could free the vehicle. If that does
not get the vehicle out after a few tries, it might need to
be towed out. If the vehicle does need to be towed out,
seeTowing Your Vehicle on page 5‑29.
Loading the Vehicle
It is very important to know how much weight your
vehicle can carry. This weight is called the vehicle
capacity weight and includes the weight of all
occupants, cargo, and all nonfactory‐installed
options. Two labels on your vehicle show how
much weight it may properly carry, the Tire and
Loading Information label, and the Certification
label.
{WARNING:
Do not load the vehicle any heavier than
the Gross Vehicle Weight Rating (GVWR),
or either the maximum front or rear Gross
Axle Weight Rating (GAWR). If you do, parts
on the vehicle can break, and it can change
the way the vehicle handles. These could
cause you to lose control and crash. Also,
overloading can shorten the life of the
vehicle.
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Black plate (25,1)Cadillac STS Owner Manual - 2011
Steps for Determining Correct
Load Limit
1.Locate the statement“The combined weight
of occupants and cargo should never exceed
XXX kg or XXX lbs” on your vehicle's placard.
2.Determine the combined weight of the driver
and passengers that will be riding in your
vehicle.
3.Subtract the combined weight of the driver
and passengers from XXX kg or XXX lbs.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the“XXX”amount equals
1400 lbs and there will be five 150 lb
passengers in your vehicle, the amount of
available cargo and luggage load capacity is
650 lbs (1400 −750 (5 x 150) = 650 lbs).
5.Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated in
Step 4.
6.If your vehicle will be towing a trailer, the load
from your trailer will be transferred to your
vehicle. Consult this manual to determine
how this reduces the available cargo and
luggage load capacity of your vehicle.
See Towing a Trailer
on page 5‑31for
important information on towing a trailer,
towing safety rules and trailering tips.
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Black plate (29,1)Cadillac STS Owner Manual - 2011
WARNING: (Continued)
.When you carry something inside the
vehicle, secure it whenever you can.
.Do not leave a seat folded down unless
you need to.
Towing
Towing Your Vehicle
Notice:To avoid damage, the disabled vehicle
should be towed with all four wheels off the ground.
Care must be taken with vehicles that have low
ground clearance and/or special equipment.
Consult your dealer or a professional towing service if
the disabled vehicle must be towed. See Roadside
Service on page 8‑8.
To tow the vehicle behind another vehicle for
recreational purposes, such as behind a motorhome,
see “Recreational Vehicle Towing” following.
Recreational Vehicle Towing
Recreational vehicle towing means towing the vehicle
behind another vehicle–such as behind a motorhome.
The two most common types of recreational vehicle
towing are known as “dinghy towing” —towing the
vehicle with all four wheels on the ground, and “dolly
towing” — towing the vehicle with two wheels on the
ground and two wheels up on a device known as a
“dolly”.
Here are some important things to consider before
recreational vehicle towing:
.What is the towing capacity of the towing vehicle?
Be sure to read the tow vehicle manufacturer's
recommendations.
.What is the distance that will be travelled? Some
vehicles have restrictions on how far and how long
they can tow.
.Is the proper towing equipment going to be used?
See your dealer or trailering professional for
additional advice and equipment
recommendations.
.Is the vehicle ready to be towed? Just as preparing
the vehicle for a long trip, make sure the vehicle is
prepared to be towed. See Before Leaving on a
Long Trip on page 5‑18.
5-29