ECU CADILLAC STS 2009 1.G Workshop Manual

3. Add the proper DEX-COOL®coolant mixture to the
ll neck, until the coolant reaches the COLD FILL
line on the ll neck.
With the Intercooler System pressure cap off, start
the engine and let it run for a couple of minutes.
Then turn the engine off. By this time, the coolant
level inside the ll neck may be lower. If the level
drops to where coolant is no longer visible in the
horizontal tube section of the ll neck, with the engine
off add more of the DEX-COOL
®coolant mixture
to the ll neck until the level is again visible in the
horizontal tube section.
4. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
If the coolant is not at the proper level when the system
cools down again, see your dealer.
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 5-12for more
information on location.
Engine Overheating
The vehicle has several indicators to warn of engine
overheating.
There are two engine hot messages that could be
displayed in the Driver Information Center (DIC).
SeeDIC Warnings and Messages on page 3-79
DIC Warnings and Messages for more information.
If the engine is overheating, then you will nd a coolant
temperature gage and a coolant warning light on the
instrument panel. SeeEngine Coolant Temperature
Gage on page 3-65andEngine Coolant Temperature
Warning Light on page 3-64for more information.
5-34

Tire Chains
{CAUTION:
If your VEHICLE has P255/45R17, P255/45ZR18,
P275/40R19, or 255/45ZR18 size tires, do not use
tire chains, as there is not enough clearance.
Tire chains used on a vehicle without the proper
amount of clearance can cause damage to the
brakes, suspension, or other vehicle parts.
The area damaged by the tire chains could
cause you to lose control of the vehicle and
you or others may be injured in a crash.
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
CAUTION: (Continued)
CAUTION: (Continued)
conditions. Follow that manufacturer’s instructions.
To help avoid damage to the vehicle, drive slowly,
readjust, or remove the device if it is contacting
the vehicle, and do not spin the vehicle’s wheels.
If you do nd traction devices that will t, install
them on the rear tires only.
Notice:If your vehicle has P235/50R17 size tires,
use tire chains only where legal and only when you
must. Use only SAE Class S-type chains that are
the proper size for your tires. Install them on the rear
tires and tighten them as tightly as possible with
the ends securely fastened. Drive slowly and follow
the chain manufacturer’s instructions. If you can
hear the chains contacting your vehicle, stop
and retighten them. If the contact continues, slow
down until it stops. Driving too fast or spinning the
wheels with chains on will damage your vehicle.
5-81

Using the Tire Sealant and Compressor
Kit without Sealant to Inate a Tire
(Not Punctured)
To use the air compressor to inate a tire with air only
and not sealant:
Always do a safety check rst. SeeIf a Tire Goes Flat
on page 5-84.
1. Remove the tire sealant and compressor kit from its
storage location. SeeTire Sealant and Compressor
Kit Storage on page 5-104.
2. Unlock the air only hose (F) from the sealant
canister (B) by pulling up on the lever.3. Pull the air only hose (F) from the sealant
canister (B).
4. Remove the power plug (C) from the air
compressor (A).
5. Place the kit on the ground.
Make sure the tire valve stem is positioned close to
the ground so the hose will reach it.
6. Remove the tire valve stem cap by turning it
counterclockwise.
7. Attach the air only hose (F) onto the tire valve stem
and push the lever down to secure it.
8. Plug the power plug (C) into the accessory power
outlet in the vehicle. Unplug all items from other
accessory power outlets. SeeAccessory Power
Outlet(s) on page 3-46.
If the vehicle has an accessory power outlet, do not
use the cigarette lighter.
If the vehicle only has a cigarette lighter, use the
cigarette lighter.
Do not pinch the power plug cord in the door or
window.
9. Start the vehicle. The vehicle must be running while
using the air compressor.
10. Press the on/off (D) button to turn the
compressor on.
The compressor will inate the tire with air only.
5-93

3. Reinstall the compact spare tire (F) making sure to
line up the wheel center hole with the bolt (H) and
place on the compartment oor.
4. Insert the jack container (E) with wheel wrench and
jack into the center of the compact spare tire making
sure to line up the wheel nut hole with the bolt (H) on
the compartment oor.
5. Secure the tire and wheel with the retainer (D) and
wing nut (C).
6. Cover the exposed bolt with the stow rod cap (B).
7. Reinstall the compact spare tire cover (A).
Compact Spare Tire
Although the compact spare tire was fully inated
when the vehicle was new, it can lose air after a time.
Check the ination pressure regularly. It should be
60 psi (420 kPa).
After installing the compact spare on the vehicle, you
should stop as soon as possible and make sure the spare
tire is correctly inated. The compact spare is made to
perform well at speeds up to 65 mph (105 km/h) for
distances up to 3,000 miles (5 000 km), so you can nishyour trip and have the full-size tire repaired or replaced
where you want. You must calibrate the tire ination
monitor system after installing or removing the compact
spare. SeeTire Pressure Monitor System on page 5-66.
The system may not work correctly when the compact
spare is installed on the vehicle. Of course, it’s best to
replace the spare with a full-size tire as soon as you can.
The spare will last longer and be in good shape in case
you need it again.
Notice:When the compact spare is installed,
do not take the vehicle through an automatic car
wash with guide rails. The compact spare can
get caught on the rails which can damage the
tire, wheel and other parts of the vehicle.
Do not use the compact spare on other vehicles.
And do not mix the compact spare tire or wheel with
other wheels or tires. They will not t. Keep the
spare tire and its wheel together.
Notice:Tire chains will not t the compact spare.
Using them can damage the vehicle and can damage
the chains too. Do not use tire chains on the
compact spare.
5-114

{CAUTION:
A safety belt that is not properly routed through
the seat cushion or is twisted will not provide the
protection needed in a crash. If the safety belt has
not been routed through the seat cushion at all, it
will not be there to work for the next passenger.
The person sitting in that position could be badly
injured. After reinstalling the seat cushion, always
check to be sure that the safety belts are properly
routed and are not twisted.
1. Buckle the center passenger position safety belt,
then route the safety belts through the proper slots
in the seat cushion. Do not let the safety belts
get twisted.
2. Slide the rear of the cushion up and under the
seatback so the rear-locating guides hook into
the wire loops on the back frame.
3. With the seat cushion lowered, push rearward and
then press down on the seat cushion until the
spring locks on both ends engage.4. Check to make sure the safety belts are properly
routed and that no portion of any safety belt is
trapped under the seat. Also make sure the
seat cushion is secured.Rear Underseat Fuse Block
There is a fuse block located under the rear seat on the
driver side and passenger side of the vehicle. The rear
seat cushion must be removed to access the fuse blocks.
See “Removing the Rear Seat Cushion” listed previously
in this section.
To access the fuses, push in the two tabs, then lift the
cover off.
5-129

At Least Once a Month
Tire Ination Check
Inspect the vehicle’s tires and make sure they are inated
to the correct pressures. Do not forget to check the spare
tire, if the vehicle has one. SeeInflation - Tire Pressure
on page 5-64. If the vehicle has a spare tire, check to
make sure it is stored securely. SeeChanging a Flat Tire
on page 5-104.
Tire Wear Inspection
Tire rotation is recommended if the vehicle has the same
size tires at all four wheel positions and may be required
for high mileage highway drivers prior to the Engine Oil
Life System service notication. Check the tires for wear
and, if necessary, rotate the tires. SeeTire Inspection
and Rotation on page 5-71.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-33.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in P (Park) or N (Neutral). If the
vehicle starts in any other position, contact
your dealer/retailer for service.
6-11

Coverage
Services are provided up to 5 years/100,000 miles
(160 000 km), whichever comes rst.
In the U.S., anyone driving the vehicle is covered.
In Canada, a person driving the vehicle without
permission from the owner is not covered.
Roadside Assistance is not a part of the New Vehicle
Limited Warranty. Cadillac and General Motors of
Canada Limited reserve the right to make any changes
or discontinue the Roadside Assistance program at
any time without notication.
Cadillac and General Motors of Canada Limited reserve
the right to limit services or payment to an owner or
driver if they decide the claims are made too often, or
the same type of claim is made many times.
Cadillac Owner Privileges™
Emergency Fuel Delivery:Delivery of enough fuel
for the vehicle to get to the nearest service station.
Lock-Out Service:Service is provided to unlock the
vehicle if you are locked out. A remote unlock may
be available if you have OnStar
®. For security
reasons, the driver must present identication
before this service is given.
Emergency Tow From a Public Road or Highway:
Tow to the nearest Cadillac dealer for warranty
service, or if the vehicle was in a crash and cannot
be driven. Assistance is also given when the vehicle
is stuck in the sand, mud, or snow.
Flat Tire Change:Service is provided to change a
at tire with spare tire. The spare tire, if equipped,
must be in good condition and properly inated. It is
your responsibility for the repair or replacement of
the tire if it is not covered by the warranty.
Battery Jump Start:Service is provided to jump
start a dead battery.
Trip Routing Service:Detailed maps of North
America are provided when requested either with the
most direct route or the most scenic route. Additional
travel information is also available. Allow three
weeks for delivery.
Trip Interruption Benets and Assistance:
If your trip is interrupted due to a warranty failure,
incidental expenses may be reimbursed during the
5 year/100,000 miles (160 000 km) Powertrain
warranty period. Items considered are hotel, meals,
and rental car.
7-8

OnStar®
If your vehicle has OnStar and you subscribe to the
OnStar services, please refer to the OnStar Terms and
Conditions for information on data collection and
use. See alsoOnStar
®System on page 2-50in this
manual for more information.
Navigation System
If your vehicle has a navigation system, use of the
system may result in the storage of destinations,
addresses, telephone numbers, and other trip
information. Refer to the navigation system operating
manual for information on stored data and for deletion
instructions.
Radio Frequency
Identication (RFID)
RFID technology is used in some vehicles for functions
such as tire pressure monitoring and ignition system
security, as well as in connection with conveniences
such as key fobs for remote door locking/unlocking and
starting, and in-vehicle transmitters for garage door
openers. RFID technology in GM vehicles does not use
or record personal information or link with any other
GM system containing personal information.
7-18

Chemical Paint Spotting.................................5-112
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-31
Lower Anchors and Tethers for Children..........1-39
Older Children.............................................1-28
Securing a Child Restraint in a
Rear Seat Position...................................1-45
Securing a Child Restraint in the
Right Front Seat Position..........................1-47
Where to Put the Restraint...........................1-37
Cigarette Lighter.............................................3-47
Cleaning
Aluminum or Chrome-Plated Wheels.............5-110
Exterior Lamps/Lenses................................5-109
Fabric/Carpet............................................5-106
Finish Care...............................................5-109
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-107
Interior.....................................................5-105
Leather....................................................5-107
Speaker Covers.........................................5-108
Tires........................................................5-111
Underbody Maintenance.............................5-111
Washing Your Vehicle.................................5-108
Weatherstrips............................................5-108
Windshield and Wiper Blades......................5-110
Wood Panels............................................5-107Climate Control System
Air Filter, Passenger Compartment.................3-54
Dual ..........................................................3-48
Outlet Adjustment........................................3-52
Rear ..........................................................3-53
Clock, Setting.................................................3-98
Collision Damage Repair..................................7-11
Compact Spare Tire......................................5-104
Compass.................................................1-6, 2-38
Competitive Driving.........................................4-17
Competitive Driving Mode
................................4-11
Compressor Kit
Storing.......................................................5-94
Compressor Kit, Tire Sealant............................5-87
Control of a Vehicle.......................................... 4-3
Convenience Net............................................2-60
Coolant
Engine.......................................................5-27
Engine Temperature Gage............................3-65
Engine Temperature Warning Light.................3-64
Surge Tank Pressure Cap.............................5-34
Cooling System..............................................5-26
Cruise Control................................................3-16
Cruise Control, Forward Collision
Alert (FAC) System....................................... 3-9
Cruise Control Light........................................3-70
Cupholders....................................................2-60
3

Customer Assistance Information
Courtesy Transportation................................7-10
Customer Assistance for Text
Telephone (TTY) Users............................... 7-6
Customer Assistance Offices........................... 7-6
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-7
Reporting Safety Defects to
General Motors........................................7-15
Reporting Safety Defects to the
Canadian Government..............................7-15
Reporting Safety Defects to the
United States Government.........................7-14
Roadside Service.......................................... 7-7
Service Publications Ordering Information........7-15
D
Daytime Running Lamp...................................3-36
Defensive Driving............................................. 4-2
Disc, MP3....................................................3-111
Doing Your Own Service Work........................... 5-4
Door
Locks........................................................2-13
Power Door Locks.......................................2-13
Programmable Automatic Door Locks.............2-14
Rear Door Security Locks.............................2-14Driver Information Center (DIC).........................3-72
DIC Operation and Displays..........................3-72
DIC Warnings and Messages........................3-79
Other Messages..........................................3-96
Driving
At Night.....................................................4-17
Before a Long Trip......................................4-19
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Highway Hypnosis.......................................4-19
Hill and Mountain Roads..............................4-20
In Rain and on Wet Roads...........................4-18
Rocking Your Vehicle to Get it Out.................4-24
Winter........................................................4-21
Dual Climate Control System............................3-48
E
EDR .............................................................7-16
Electrical System
Add-On Equipment.....................................5-113
Fuses and Circuit Breakers.........................5-113
Headlamp Wiring.......................................5-113
Power Windows and Other Power
Options.................................................5-113
Rear Underseat Fuse Block.........................5-118
Underhood Fuse Block...............................5-114
4