2006 CADILLAC DTS fuel pressure

Warning Lights, Gages, and Indicators............3-55
Instrument Panel Cluster................................3-56
Speedometer and Odometer...........................3-57
Tachometer.................................................3-57
Safety Belt Reminder Light.............................3-57
Passenger Safety Belt Reminder Light.............3-58
Airbag Readiness Light..................................3-58
Passenger Airbag Status Indicator...................3-59
Charging System Light..................................3-61
Brake System Warning Light..........................3-62
Anti-Lock Brake System Warning Light.............3-63
Low Tire Pressure Warning Light....................3-63
Traction Control System (TCS)
Warning Light...........................................3-64
StabiliTrak
®Indicator Light..............................3-64
Engine Coolant Temperature Warning Light......3-65
Engine Coolant Temperature Gage..................3-65
Malfunction Indicator Lamp.............................3-66
Oil Pressure Light.........................................3-68
Security Light...............................................3-69
Fog Lamp Light............................................3-69
Rear Fog Lamp Light....................................3-69
Lights On Reminder......................................3-70Cruise Control Light......................................3-70
Highbeam On Light.......................................3-70
Fuel Gage...................................................3-70
Driver Information Center (DIC).......................3-71
DIC Controls and Displays.............................3-72
DIC Warnings and Messages.........................3-76
DIC Vehicle Customization.............................3-88
Audio System(s).............................................3-97
Setting the Time (Radio with Single
CD Player)...............................................3-98
Setting the Time (Radio with Six-Disc
CD Player).............................................3-100
Radio with CD (MP3)..................................3-102
Navigation/Radio System..............................3-121
Theft-Deterrent Feature................................3-121
Audio Steering Wheel Controls......................3-122
Radio Reception.........................................3-123
Care of Your CDs.......................................3-124
Care of the CD Player.................................3-124
Diversity Antenna System.............................3-124
XM™ Satellite Radio Antenna System............3-125
Section 3 Instrument Panel
3-2

Once you are moving on the freeway, make certain you
allow a reasonable following distance.
Expect to move slightly slower at night.
When you want to leave the freeway, move to the
proper lane well in advance. If you miss your exit, do
not, under any circumstances, stop and back up. Drive
on to the next exit.
The exit ramp can be curved, sometimes quite sharply.
The exit speed is usually posted. Reduce your speed
according to your speedometer, not to your sense
of motion. After driving for any distance at higher
speeds, you may tend to think you are going slower
than you actually are.
Before Leaving on a Long Trip
Make sure you are ready. Try to be well rested. If you
must start when you are not fresh — such as after
a day’s work — do not plan to make too many miles that
rst part of the journey. Wear comfortable clothing
and shoes you can easily drive in.Is your vehicle ready for a long trip? If you keep it
serviced and maintained, it is ready to go. If it needs
service, have it done before starting out. Of course,
you will nd experienced and able service experts in
GM dealerships all across North America. They will be
ready and willing to help if you need it.
Here are some things you can check before a trip:
Windshield Washer Fluid:Is the reservoir full? Are
all windows clean inside and outside?
Wiper Blades:Are they in good shape?
Fuel, Engine Oil, Other Fluids:Have you checked
all levels?
Lamps:Are they all working? Are the lenses clean?
Tires:They are vitally important to a safe,
trouble-free trip. Is the tread good enough for
long-distance driving? Are the tires all inated to the
recommended pressure?
Weather Forecasts:What is the weather outlook
along your route? Should you delay your trip a
short time to avoid a major storm system?
Maps:Do you have up-to-date maps?
4-23

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................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....................................5-6
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...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-18
Automatic Transaxle Fluid..............................5-19
Engine Coolant.............................................5-22
Coolant Surge Tank Pressure Cap..................5-25
Engine Overheating.......................................5-25
Overheated Engine Protection Operating Mode . . .5-27
Cooling System............................................5-28Power Steering Fluid.....................................5-33
Windshield Washer Fluid................................5-34
Brakes........................................................5-35
Battery........................................................5-37
Jump Starting...............................................5-39
Headlamp Aiming...........................................5-44
Bulb Replacement..........................................5-47
High Intensity Discharge (HID) Lighting............5-47
Windshield Wiper Blade Replacement..............5-47
Tires..............................................................5-49
Tire Sidewall Labeling...................................5-50
Tire Terminology and Denitions.....................5-53
Ination - Tire Pressure.................................5-56
Tire Pressure Monitor System.........................5-59
Tire Inspection and Rotation...........................5-63
When It Is Time for New Tires.......................5-64
Buying New Tires.........................................5-65
Different Size Tires and Wheels......................5-66
Uniform Tire Quality Grading..........................5-67
Wheel Alignment and Tire Balance..................5-69
Wheel Replacement......................................5-69
Tire Chains..................................................5-70
If a Tire Goes Flat........................................5-71
Changing a Flat Tire.....................................5-72
Section 5 Service and Appearance Care
5-1

Filling the Tank
{CAUTION:
Fuel vapor burns violently and a fuel re can
cause bad injuries. To help avoid injuries to
you and others, read and follow all the
instructions on the pump island. Turn off your
engine when you are refueling. Do not smoke
if you are near fuel or refueling your vehicle.
Keep sparks, ames, and smoking materials
away from fuel. Do not leave the fuel pump
unattended when refueling your vehicle — this
is against the law in some places. Keep
children away from the fuel pump; never let
children pump fuel.The tethered fuel cap is located behind a hinged fuel
door on the driver’s side of the vehicle.
To open the fuel door, apply pressure in the center of
the rear edge of the fuel door and it will pop open.
To remove the fuel cap, turn it slowly counterclockwise.
The fuel cap has a spring in it; if the cap is released
too soon, it will spring back to the right.
While refueling, hang the tethered fuel cap from the
hook on the fuel door.
5-8

A. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-93.
B. Remote Positive (+) Terminal. SeeJump Starting on
page 5-39.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-34.
D. Engine Coolant Surge Tank and Pressure Cap. See
Coolant Surge Tank Pressure Cap on page 5-25
andCooling System on page 5-28.
E. Power Steering Fluid. SeePower Steering Fluid on
page 5-33.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-13.
G. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-13.
H. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-35.
I. Automatic Transaxle Fluid Cap and Dipstick (Out of
View). SeeAutomatic Transaxle Fluid on page 5-19.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-18.Engine Oil
If the ENGINE OIL LOW ADD OIL message appears
on the Driver Information Center (DIC), it means
you need to check your engine oil level right away. See
“ENGINE OIL LOW ADD OIL” underDIC Warnings
and Messages on page 3-76.
You should check your engine oil level regularly; this is
an added reminder.
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-12for
the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If you do not do this,
the oil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towel
or cloth, then push it back in all the way. Remove it
again, keeping the tip down, and check the level.
5-13

Bias Ply Tire:A pneumatic tire in which the plies are
laid at alternate angles less than 90 degrees to the
centerline of the tread.
Cold Ination Pressure:The amount of air pressure in
a tire, measured in pounds per square inch (psi) or
kilopascals (kPa) before a tire has built up heat
from driving. SeeInation - Tire Pressure on page 5-56.
Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment including
the maximum capacity of fuel, oil, and coolant, but
without passengers and cargo.
DOT Markings:A code molded into the sidewall of a
tire signifying that the tire is in compliance with the U.S.
Department of Transportation (DOT) motor vehicle
safety standards. The DOT code includes the Tire
Identication Number (TIN), an alphanumeric designator
which can also identify the tire manufacturer, production
plant, brand, and date of production.
GVWR:Gross Vehicle Weight Rating, seeLoading
Your Vehicle on page 4-31.
GAWR FRT:Gross Axle Weight Rating for the front
axle, seeLoading Your Vehicle on page 4-31.
GAWR RR:Gross Axle Weight Rating for the rear axle,
seeLoading Your Vehicle on page 4-31.Intended Outboard Sidewall:The side of an
asymmetrical tire, that must always face outward when
mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
Light Truck (LT-Metric) Tire:A tire used on light duty
trucks and some multipurpose passenger vehicles.
Load Index:An assigned number ranging from
1 to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Ination Pressure:The maximum air
pressure to which a cold tire may be inated. The
maximum air pressure is molded onto the sidewall.
Maximum Load Rating:The load rating for a tire at the
maximum permissible ination pressure for that tire.
Maximum Loaded Vehicle Weight:The sum of curb
weight, accessory weight, vehicle capacity weight,
and production options weight.
Normal Occupant Weight:The number of occupants a
vehicle is designed to seat multiplied by 150 lbs (68 kg).
SeeLoading Your Vehicle on page 4-31.
Occupant Distribution:Designated seating positions.
5-54

Ination - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right. It is not.
If your tires do not have enough air (under-ination),
you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economy
If your tires have too much air (over-ination), you
can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazardsA Tire and Loading Information label is attached to the
vehicle’s center pillar, below the driver’s door latch.
This label lists your vehicle’s original equipment
tires and shows the correct ination pressures for your
tires when they are cold. The recommended cold
tire ination pressure, shown on the label, is the
minimum amount of air pressure needed to support your
vehicle’s maximum load carrying capacity.
For additional information regarding how much weight
your vehicle can carry, and an example of the tire
and loading information label, seeLoading Your Vehicle
on page 4-31. How you load your vehicle affects the
vehicle handling and ride comfort, never load your
vehicle with more weight than it was designed to carry.
When to Check
Check your tires once a month or more. Do not forget to
check the spare tire. If your vehicle has a compact
spare tire, it should be at 60 psi (420 kPa). For additional
information seeSpare Tire on page 5-82.
5-56

Each tire, including the spare (if provided), should be
checked monthly when cold and inated to the ination
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire ination pressure label.
(If your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire ination
pressure label, you should determine the proper
tire ination pressure for those tires.)
As an added safety
feature, your vehicle has
been equipped with a
tire pressure monitoring
system (TPMS) that
illuminates a low tire
pressure telltale when one
or more of your tires is
signicantly under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires as
soon as possible, and inate them to the proper
pressure. Driving on a signicantly under-inated tire
causes the tire to overheat and can lead to tire failure.
Under-ination also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling
and stopping ability.Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-ination has
not reached the level to trigger illumination of the
TPMS low tire pressure telltale.
The CHECK TIRE PRESSURE warning message and
low tire pressure light (telltale) will appear at each
ignition cycle until the tires are inated to the correct
ination pressure.
The Tire and Loading Information Label shows the size
of your vehicle’s original tires and their recommended
cold ination pressures. SeeLoading Your Vehicle
on page 4-31, for the location of the tire and loading
information label. Also seeInation - Tire Pressure
on page 5-56.
Your vehicle’s TPMS can alert you about a low tire
pressure condition but it does not replace normal tire
maintenance. SeeTire Inspection and Rotation on
page 5-63andTires on page 5-49.
Notice:Do not use a tire sealant if your vehicle has
Tire Pressure Monitors. The liquid sealant can
damage the tire pressure monitor sensors.
5-60