2006 CADILLAC DTS PROFESSIONAL fuel additives

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

Gasoline Specications
At a minimum, gasoline should meet ASTM
specication D 4814 in the United States or
CAN/CGSB-3.5 in Canada. Some gasolines may
contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT).
General Motors recommends against the use of
gasolines containing MMT. SeeAdditives on page 5-6
for additional information.
California Fuel
If your vehicle is certied to meet California Emissions
Standards, it is designed to operate on fuels that
meet California specications. See the underhood
emission control label. If this fuel is not available
in states adopting California emissions standards, your
vehicle will operate satisfactorily on fuels meeting
federal specications, but emission control system
performance may be affected. The malfunction indicator
lamp may turn on and your vehicle may fail a
smog-check test. SeeMalfunction Indicator Lamp on
page 3-66. If this occurs, return to your authorized
GM dealer for diagnosis. If it is determined that
the condition is caused by the type of fuel used,
repairs may not be covered by your warranty.
Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work
properly. In most cases, you should not have to add
anything to your fuel. However, some gasolines contain
only the minimum amount of additive required to
meet U.S. Environmental Protection Agency regulations.
To help keep fuel injectors and intake valves clean,
or if your vehicle experiences problems due to
dirty injectors or valves, look for gasoline that is
advertised as TOP TIER Detergent Gasoline. Also, your
GM dealer has additives that will help correct and
prevent most deposit-related problems.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available in
your area. General Motors recommends that you use
these gasolines if they comply with the specications
described earlier. However, E85 (85% ethanol)
and other fuels containing more than 10% ethanol must
not be used in vehicles that were not designed for
those fuels.
5-6

A
Accessories and Modications............................ 5-3
Accessory Power Outlet(s)...............................3-42
Adaptive Cruise Control...................................3-19
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-70
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-92
Air Cleaner/Filter, Engine.................................5-18
Air Conditioning..............................................3-44
Airbag
Passenger Status Indicator...........................3-59
Readiness Light..........................................3-58
Airbag Sensing and Diagnostic Module (SDM)...... 7-9
Airbag System................................................1-54
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-70
How Does an Airbag Restrain?......................1-63
Passenger Sensing System...........................1-65
Servicing Your Airbag-Equipped Vehicle..........1-70
What Makes an Airbag Inate?......................1-63
What Will You See After an Airbag Inates?....1-64
When Should an Airbag Inate?....................1-61
Where Are the Airbags?...............................1-57
Analog Clock..................................................3-44Antenna, Diversity Antenna System..................3-124
Antenna, XM™ Satellite Radio
Antenna System........................................3-125
Anti-Lock Brake System (ABS)........................... 4-7
Anti-Lock Brake, System Warning Light..............3-63
Appearance Care
Aluminum or Chrome-Plated Wheels..............5-88
Care of Safety Belts....................................5-86
Chemical Paint Spotting...............................5-89
Cleaning Exterior Lamps/Lenses....................5-86
Cleaning the Inside of Your Vehicle................5-83
Fabric/Carpet..............................................5-84
Finish Care.................................................5-87
Finish Damage............................................5-89
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-85
Leather......................................................5-85
Sheet Metal Damage...................................5-89
Speaker Covers..........................................5-86
Tires..........................................................5-88
Underbody Maintenance...............................5-89
Vehicle Care/Appearance Materials................5-90
Washing Your Vehicle...................................5-86
Weatherstrips..............................................5-86
Windshield and Wiper Blades........................5-87
Wood Panels..............................................5-85
1

E
Electrical System
Add-On Equipment......................................5-92
Fuses and Circuit Breakers...........................5-93
Headlamp Wiring.........................................5-92
Power Windows and Other Power Options.........5-93
Rear Underseat Fuse Block..........................5-96
Underhood Fuse Block.................................5-93
Windshield Wiper Fuses...............................5-92
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-37
Check and Service Engine Soon Light............3-66
Coolant......................................................5-22
Coolant Heater............................................2-25
Coolant Temperature Gage...........................3-65
Coolant Temperature Warning Light................3-65
Engine Compartment Overview......................5-12
Exhaust.....................................................2-33
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheated Protection Operating Mode...........5-27
Overheating................................................5-25
Starting......................................................2-24
Entry Lighting.................................................3-36
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-29Exterior Lamps...............................................3-30
Exterior Lighting Battery Saver..........................3-35
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-89
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass.................................................3-13
Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-81
Fluid
Automatic Transaxle.....................................5-19
Power Steering...........................................5-33
Windshield Washer......................................5-34
Fog Lamp Light..............................................3-69
Fog Lamp Light, Rear.....................................3-69
Fog Lamps....................................................3-35
Forward Collision Alert (FAC) System.................. 3-9
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
5