2005 CADILLAC CTS run flat

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside
of Your Vehicle...........................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-16
Engine Oil Life System..................................5-19
Engine Air Cleaner/Filter................................5-21
Automatic Transmission Fluid.........................5-22
Manual Transmission Fluid.............................5-24
Hydraulic Clutch...........................................5-25
Engine Coolant.............................................5-25
Coolant Surge Tank Pressure Cap..................5-28
Engine Overheating.......................................5-28Overheated Engine Protection
Operating Mode........................................5-30
Cooling System............................................5-31
Power Steering Fluid.....................................5-36
Windshield Washer Fluid................................5-37
Brakes........................................................5-38
Battery........................................................5-41
Jump Starting...............................................5-42
Rear Axle.......................................................5-48
Bulb Replacement..........................................5-49
High Intensity Discharge (HID) Lighting............5-49
Halogen Bulbs..............................................5-49
Front Turn Signal and Fog Lamps...................5-50
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps.....................................5-50
Back-Up and License Plate Lamps..................5-51
Replacement Bulbs.......................................5-52
Windshield Wiper Blade Replacement..............5-52
Tires..............................................................5-54
Tire Sidewall Labelling...................................5-56
Tire Terminology and Denitions.....................5-58
Run-Flat Tires (CTS-V)..................................5-61
Ination - Tire Pressure.................................5-62
Section 5 Service and Appearance Care
5-1

Run-Flat Tires (CTS-V)
If your vehicle has run-at tires, there is no spare tire
and no tire changing equipment. Your vehicle also has
a Tire Pressure Monitor (TPM) which will alert you if
there is a loss of tire pressure in any of the tires. See
Tire Pressure Monitor System (CTS-V) on page 5-65.
{CAUTION:
When the low tire warning light is displayed on
the instrument panel cluster, your vehicle’s
handling capabilities will be reduced during
severe maneuvers. If you drive too fast, you
could lose control of your vehicle. You or
others could be injured. Don’t drive over
55 mph (90 km/h) when the low tire warning
light is displayed. Drive cautiously and check
your tire pressures as soon as you can.If a tire goes at, you won’t need to stop on the side
of the road to change the tire. You can just keep
on driving. The tire can operate effectively with no air
pressure for up to 65 miles (105 km) at speeds up
to 55 mph (90 km/h). The shorter the distance you
drive and the slower the speed, the greater the chance
that the tire will not have to be replaced. When a tire
is lled with air, it provides a cushion between the road
and the wheel. Because you won’t have this cushion
when driving on a deated run-at tire, try to avoid
potholes that could damage your wheel and require
replacement of it.
Some road hazards can damage a tire beyond repair.
This damage could occur even before you’ve driven on
the tire in a deated condition. When a tire has been
damaged, or if you’ve driven any distance on a run-at
tire, check with an authorized run-at tire service center
to determine whether the tire can be repaired or should
be replaced. To maintain your vehicle’s run-at feature,
all replacement tires must be self-supporting tires.
5-61

If your vehicle has a compact spare tire, do not include
it in the tire rotation.
After the tires have been rotated, adjust the front and
rear ination pressures as shown on the Tire and
Loading Information label. SeeLoading Your Vehicle
on page 4-33, for an example of the tire and loading
information label and its location on your vehicle.
If your vehicle has run-at tires, the Tire Pressure
Monitor (TPM) system will need to have the sensors
reset after a tire rotation is performed. A special tool is
needed to reset the sensor identication codes. See
your dealer for service.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” underCapacities and
Specications on page 5-107.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if needed, to get
all the rust or dirt off. SeeChanging a Flat
Tire (CTS) on page 5-76.
5-68

If a tire goes at, and your vehicle has a spare tire,
seeChanging a Flat Tire (CTS) on page 5-76.
This information shows you how to use your vehicle’s
tire changing equipment and how to change a at
tire safely.
{CAUTION:
Lifting a vehicle and getting under it to
do maintenance or repairs is dangerous
without the appropriate safety equipment and
training. The jack provided with your vehicle
is designed only for changing a at tire. If it
is used for anything else, you or others could
be badly injured or killed if the vehicle slips
off the jack. Use the jack provided with your
vehicle only for changing a at tire.
Run-Flat Tires (CTS-V)
If your vehicle has run-at tires, there is no spare tire
and no tire changing equipment. Run-at tires can
operate effectively with no air pressure for a limited
distance and speed. Your vehicle also has a Tire
Pressure Monitor (TPM) which will alert you if there
is a loss of tire pressure in any of the tires. These tires
perform so well without any air pressure that a Tire
Pressure Monitor (TPM) is used to alert you when
there is a low tire condition.
{CAUTION:
When the low tire warning light is displayed on
the instrument panel cluster, your vehicle’s
handling capabilities will be reduced during
severe maneuvers. If you drive too fast, you
could lose control of your vehicle. You or
others could be injured. Don’t drive over
55 mph (90 km/h) when the low tire warning
light is displayed. Drive cautiously and check
your tire pressures as soon as you can.
5-75

SeeRun-Flat Tires (CTS-V) on page 5-61andTire
Pressure Monitor System (CTS-V) on page 5-65,
for additional information.
{CAUTION:
Special tools and procedures are required to
service a run-at tire. If these special tools
and procedures aren’t used you or others
could be injured and your vehicle could be
damaged. Always be sure the proper tools
and procedures, as described in the service
manual, are used.
To order a service manual seeService Publications
Ordering Information on page 7-11.
Changing a Flat Tire (CTS)
If a tire goes at, avoid further tire and wheel
damage by driving slowly to a level place.
Turn on your hazard warning ashers.
{CAUTION:
Changing a tire can be dangerous. The vehicle
can slip off the jack and roll over or fall on you
or other people. You and they could be badly
injured or even killed. Find a level place to
change your tire. To help prevent the vehicle
from moving:
1. Set the parking brake rmly.
2. Put an automatic transmission shift lever
in PARK (P), or shift a manual transmission
to FIRST (1) or REVERSE (R).
3. Turn off the engine and do not restart while
the vehicle is raised.
4. Do not allow passengers to remain in the
vehicle.
Put the wheel blocks at the front and rear of the
tire farthest away from the one being changed.
That would be the tire on the other side, at the
opposite end of the vehicle.
5-76

13. Tighten the wheel nuts
rmly in a crisscross
sequence as shown.
Notice:Wheel covers will not t on your compact
spare. If you try to put a wheel cover on the compact
spare, you could damage the cover or the spare.
Do not try to put a wheel cover on your compact spare
tire. It will note t. Store the wheel cover in the trunk
until you have the at tire repaired or replaced.Storing a Flat or Spare Tire and
Tools (CTS)
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
After you’ve put the compact spare tire on your vehicle,
you will need to store the at tire in your trunk.
Remove the foam support so that the at tire will
t in the storage area. Place the at tire with the
appearance-side face down and store the jack container
in the center of the tire. See the diagram for more
information.
The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon
as you can.
5-84

Use the following diagram as a guide for storing the
compact spare tire in the trunk:
A. Compact Spare Tire
Cover Wing Nut
B. Compact Spare
Tire Cover
C. Plastic Wing Nut
D. Retainer
E. Jack Container
with Wheel Wrench
and JackF. Flat Road Tire
G. Compact Spare Tire
H. Foam Insert
I. Bolt
J. Wheel Wrench
K. Jack
L. Jack ContainerCompact Spare Tire (CTS)
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, 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
nish your trip and have the full-size tire repaired or
replaced at your convenience. Of course, it is best
to replace the spare with a full-size tire as soon as
possible. The spare tire will last longer and be in good
shape in case it is needed again.
Notice:When the compact spare is installed, do
not take your vehicle through an automatic car
wash with guide rails. The compact spare can get
caught on the rails. That can damage the tire
and wheel, and maybe other parts of your 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 your compact spare.
Using them can damage your vehicle and can
damage the chains too. Do not use tire chains on
your compact spare.
5-85

Q
Questions and Answers About Safety Belts.........1-13
R
Radios..........................................................3-88
Care of Your CD Player..............................3-107
Care of Your CDs......................................3-107
Navigation/Radio System, see Navigation
Manual.................................................3-105
Radio with CD............................................3-89
Setting the Time..........................................3-88
Theft-Deterrent..........................................3-105
Understanding Reception............................3-106
Reading Lamps..............................................3-25
Rear Axle......................................................5-48
Limited-Slip.................................................4-11
Rear Door Security Locks................................2-10
Rear Safety Belt Comfort Guides......................1-25
Rear Seat Passengers, Safety Belts..................1-23
Rearview Mirror, Automatic Dimming
with OnStar
®..............................................2-39
Rearview Mirror, Automatic Dimming
with OnStar
®and Compass..........................2-40
Reclining Seatbacks.......................................... 1-4Recommended Fluids and Lubricants.................6-12
Recongurable Steering Wheel Controls............... 3-7
Recreational Vehicle Towing.............................4-38
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-79
Removing the Spare Tire and Tools...................5-77
Replacement Bulbs.........................................5-52
Reporting Safety Defects
Canadian Government..................................7-10
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-65
Replacing Restraint System Parts
After a Crash..........................................1-65
Retained Accessory Power (RAP)......................2-24
Right Front Passenger Position, Safety Belts......1-22
Roadside
Service........................................................ 7-5
Rocking Your Vehicle to Get it Out....................4-33
Roof Rack Provisions......................................2-50
Run-Flat Tires................................................5-61
Running the Engine While Parked.....................2-38
10