2007 CADILLAC CTS spare tire

Windshield Wiper Blade Replacement....... 390
Tires............................................................ 392
Winter Tires.............................................. 393
Tire Sidewall Labeling............................... 394
Tire Terminology and Denitions............... 397
Run-Flat Tires (CTS-V).............................. 400
Ination - Tire Pressure............................. 402
High-Speed Operation............................... 404
Tire Pressure Monitor System................... 405
Tire Inspection and Rotation...................... 409
When It Is Time for New Tires.................. 411
Buying New Tires...................................... 411
Different Size Tires and Wheels................ 414
Uniform Tire Quality Grading..................... 414
Wheel Alignment and Tire Balance............ 416
Wheel Replacement.................................. 416
Tire Chains............................................... 418
Lifting Your Vehicle (CTS-V)...................... 418
If a Tire Goes Flat.................................... 422
Changing a Flat Tire (CTS Only)............... 424
Removing the Spare Tire and Tools
(CTS Only)............................................ 425Removing the Flat Tire and Installing
the Spare Tire (CTS Only)..................... 426
Storing a Flat or Spare Tire and Tools
(CTS Only)............................................ 433
Compact Spare Tire (CTS Only)................ 434
Appearance Care........................................ 435
Cleaning the Inside of Your Vehicle.......... 435
Fabric/Carpet............................................. 437
Leather...................................................... 438
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 438
Wood Panels............................................. 439
Speaker Covers........................................ 439
Care of Safety Belts.................................. 439
Weatherstrips............................................ 439
Washing Your Vehicle............................... 439
Cleaning Exterior Lamps/Lenses................ 440
Finish Care............................................... 440
Windshield and Wiper Blades.................... 441
Aluminum or Chrome-Plated Wheels
and Trim................................................ 441
Tires......................................................... 442
Section 5 Service and Appearance Care
330

Headlamp Aiming
The vehicle has a visual optical headlamp aiming
system. The aim has been preset at the factory
and should need no further adjustment.
However, if the vehicle is damaged in an accident,
the headlamp aim may be affected and adjustment
may be necessary.
If oncoming vehicles ash their high beams at
you, this may also mean the vertical aim needs to
be adjusted.
It is recommended that the vehicle is taken to your
dealer/retailer for service if the headlamps need to
be re-aimed. It is possible however, to re-aim the
headlamps as described in the following procedure.The vehicle should be properly prepared as follows:The vehicle should be placed so the headlamps
are 25 ft. (7.6 m) from a light colored wall.
The vehicle must have all four tires on a level
surface which is level all the way to the wall.
The vehicle should be placed so it is
perpendicular to the wall.
The vehicle should not have any snow, ice, or
mud on it.
The vehicle should be fully assembled and all
other work stopped while headlamp aiming is
being performed.
The vehicle should be normally loaded with a
full tank of fuel and one person or 160 lbs
(75 kg) sitting on the driver’s seat.
Tires should be properly inated.
The spare tire is in its original location in the
vehicle.
383

Taillamps, Turn Signal, Stoplamps
and Sidemarker Lamps
A. Taillamps and
Stoplamps
B. Turn Signal Lamp
C. Sidemarker Lamp
1. Open the trunk. SeeTrunk on page 104for
more information.
2. Remove the compact spare tire cover by
turning the wing nut counterclockwise.3. Remove the four convenience net wing nuts.
4. Pull the carpet back away from the body
of the vehicle on the side with the burned
out bulb.
5. Remove the two mounting screws from the
lamp assembly.
6. Pull out the lamp assembly to expose the bulb
sockets.
7. Turn the bulb socket one-quarter turn
counterclockwise and pull the bulb socket out
of the lamp reector.
8. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
9. Install a new bulb.
10. Reverse the steps to reinstall the lamp
assembly.
388

Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.(A) Tire Size:The tire size is a combination of
letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction type,
and service description. See the “Tire Size”
illustration later in this section for more detail.
(B) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):The
Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
(D) Tire Identication Number (TIN):The letters
and numbers following DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
Passenger (P-Metric) Tire Example
394

(E) Tire Ply Material:The type of cord and
number of plies in the sidewall and under
the tread.
(F) Uniform Tire Quality Grading (UTQG):Tire
manufacturers are required to grade tires
based on three performance factors: treadwear,
traction, and temperature resistance. For more
information seeUniform Tire Quality Grading on
page 414.
(G) Maximum Cold Ination Load Limit:
Maximum load that can be carried and the
maximum pressure needed to support that load.
(A) Temporary Use Only:The compact spare
tire or temporary use tire has a tread life of
approximately 3,000 miles (5 000 km) and should
not be driven at speeds over 65 mph (105 km/h).
The compact spare tire is for emergency use
when a regular road tire has lost air and gone at.
If your vehicle has a compact spare tire, see
Compact Spare Tire (CTS Only) on page 434and
If a Tire Goes Flat on page 422.
Compact Spare Tire Example
395

(B) Tire Ply Material:The type of cord and
number of plies in the sidewall and under the
tread.
(C) Tire Identication Number (TIN):The letters
and numbers following the DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may have
the date of manufacture.
(D) Maximum Cold Ination Load Limit:
Maximum load that can be carried and the
maximum pressure needed to support that load.
(E) Tire Ination:The temporary use tire or
compact spare tire should be inated to 60 psi
(420 kPa). For more information on tire pressure
and ination seeInation - Tire Pressure on
page 402.
(F) Tire Size:A combination of letters and
numbers dene a tire’s width, height, aspect ratio,
construction type, and service description. The
letter T as the rst character in the tire size means
the tire is for temporary use only.(G) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
Tire Size
The following illustration shows an example of a
typical passenger vehicle tire size.
(A) Passenger (P-Metric) Tire:The United
States version of a metric tire sizing system.
The letter P as the rst character in the tire size
means a passenger vehicle tire engineered
to standards set by the U.S. Tire and Rim
Association.
396

Vehicle Capacity Weight:The number of
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. SeeLoading
Your Vehicle on page 321.
Vehicle Maximum Load on the Tire:Load on an
individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Vehicle Placard:A label permanently attached to
a vehicle showing the vehicle’s capacity weight
and the original equipment tire size and
recommended ination pressure. See “Tire and
Loading Information Label” underLoading
Your Vehicle on page 321.
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. SeeTire Pressure Monitor
System on page 405.
{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. Do not 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 will not 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.
400

When to Check
Check your tires once a month or more. Do not
forget to check the compact spare tire, if your
vehicle has one. The compact spare should be at
60 psi (420 kPa). For additional information
regarding the compact spare tire, seeCompact
Spare Tire (CTS Only) on page 434.
How to Check
Use a good quality pocket-type gage to check
tire pressure. You cannot tell if your tires are
properly inated simply by looking at them. Radial
tires may look properly inated even when they
are underinated. Check the tire’s ination
pressure when the tires are cold. Cold means your
vehicle has been sitting for at least three hours
or driven no more than 1 mile (1.6 km).Remove the valve cap from the tire valve stem.
Press the tire gage rmly onto the valve to
get a pressure measurement. If the cold tire
ination pressure matches the recommended
pressure on the Tire and Loading Information
label, no further adjustment is necessary. If the
ination pressure is low, add air until you reach the
recommended amount.
If you overll the tire, release air by pushing on
the metal stem in the center of the tire valve.
Re-check the tire pressure with the tire gage.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
403