2010 CADILLAC DTS wheel

Driving on Grades
Notice:Do not tow on steep continuous gradesexceeding 6 miles (9.6 km). Extended, higherthan normal engine and transmission temperaturesmay result and damage the vehicle. Frequentstops are very important to allow the engine andtransmission to cool.
Reduce speed and shift to a lower gearbeforestartingdown a long or steep downgrade. If the transmission isnot shifted down, the brakes might have to be used somuch that they would get hot and no longer work well.
On a long uphill grade, shift down and reduce thevehicle’s speed to around 45 mph (70 km/h) to reducethe possibility of the engine and the transmissionoverheating. If the engine does overheat, seeEngineOverheating on page 6-27.
Parking on Hills
{WARNING:
Parking the vehicle on a hill with the trailer
attached can be dangerous. If something goes
wrong, the rig could start to move. People can be
injured, and both the vehicle and the trailer can be
damaged. When possible, always park the rig on a
flat surface.
If parking the rig on a hill:
1. Press the brake pedal, but do not shift into P (Park)yet. Turn the wheels into the curb if facing downhillor into traffic if facing uphill.
2. Have someone place chocks under thetrailer wheels.
3. When the wheel chocks are in place, release thebrake pedal until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parkingbrake and shift the transmission into P (Park).
5. Release the brake pedal.
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Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3Accessories and Modifications . . . . . . . . . . . . . . . . . . . . . . . . . .6-3California Proposition 65 Warning . . . . . . . . . . . . . . . . . . . . .6-4California Perchlorate Materials Requirements . . . . .6-4Doing Your Own Service Work . . . . . . . . . . . . . . . . . . . . . . . . .6-4Adding Equipment to the Outsideof the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . . .6-10
Checking Things Under the Hood. . . . . . . . . . . . . . . . . . . .6-10Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-11Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . .6-12Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-16Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . .6-19Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-22Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-23Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-27
Overheated Engine ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-29Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-30Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-31Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-32Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-34Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-36
Headlamp Aiming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-40
Bulb Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-43High Intensity Discharge (HID) Lighting . . . . . . . . . . . .6-43
Windshield Wiper Blade Replacement. . . . . . . . . . . . . .6-44
Tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-46Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-47Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . . . .6-52Inflation - Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-54High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-56Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . . . .6-57Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . .6-58Tire Inspection and Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . .6-62When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . .6-64Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-64Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . .6-66Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . . . . . .6-67Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . .6-68Wheel Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-68
Section 6 Service and Appearance Care
6-1

Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-70If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-70Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . . . .6-71Tire Sealant and Compressor Kit Storage . . . . . . . . .6-79Changing a Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-80Removing the Spare Tire and Tools . . . . . . . . . . . . . . . .6-81Removing the Flat Tire and Installing theSpare Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-83Storing a Flat or Spare Tire and Tools . . . . . . . . . . . .6-88Spare Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-90
Appearance Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-91Interior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-91Fabric/Carpet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-92Leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-93Instrument Panel, Vinyl, and Other PlasticSurfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-94Wood Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-94Speaker Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-94Care of Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-95Weatherstrips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-95Washing Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-95Cleaning Exterior Lamps/Lenses . . . . . . . . . . . . . . . . . . . . .6-96
Finish Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-96Windshield and Wiper Blades . . . . . . . . . . . . . . . . . . . . . . . . .6-97Aluminum or Chrome-Plated Wheelsand Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-97Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-98Sheet Metal Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-98Finish Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-98Underbody Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-98Chemical Paint Spotting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-99
Vehicle Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-99Vehicle Identification Number (VIN) . . . . . . . . . . . . . . . . .6-99Service Parts Identification Label . . . . . . . . . . . . . . . . . . .6-100
Electrical System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-100Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . . . . . ..6-100Headlamp Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-100Windshield Wiper Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-100Power Windows and Other Power Options . . . . . .6-101Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . .6-101Underhood Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-101Rear Underseat Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . .6-104
Capacities and Specifications. . . . . . . . . . . . . . . . . . . . . . . .6-109
Section 6 Service and Appearance Care
6-2

Properly torqued wheel nuts are necessary to helpprevent brake pulsation. When tires are rotated, inspectbrake pads for wear and evenly tighten wheel nuts inthe proper sequence to torque specifications inCapacities and Specifications on page 6-109.
Brake linings should always be replaced as completeaxle sets.
Brake Pedal Travel
See your dealer/retailer if the brake pedal does notreturn to normal height, or if there is a rapid increase inpedal travel. This could be a sign that brake servicemight be required.
Brake Adjustment
Every time the brakes are applied, with or without thevehicle moving, the brakes adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its manyparts have to be of top quality and work well together ifthe vehicle is to have really good braking. The vehiclewas designed and tested with top-quality brake parts.When parts of the braking system are replaced — forexample, when the brake linings wear down and newones are installed — be sure to get new approvedreplacement parts. If this is not done, the brakes mightnot work properly.
For example, if someone puts in brake linings that arewrong for the vehicle, the balance between the front andrear brakes can change — for the worse. The brakingperformance expected can change in many other ways ifthe wrong replacement brake parts are installed.
Battery
Refer to the replacement number on the original batterylabel when a new battery is needed.
{DANGER:
Battery posts, terminals, and related accessories
contain lead and lead compounds, chemicals
known to the State of California to cause cancer
and reproductive harm. Wash hands after
handling.
The battery is under the rear seat cushion. To accessthe battery, seeRear Underseat Fuse Block onpage 6-104. Access to the battery is not necessary tojump start the vehicle. SeeJump Starting on page 6-36.
6-34

(F) Tire Ply Material:The type of cord andnumber of plies in the sidewall and underthe tread.
(G) Single Tire Maximum Load:Maximum loadthat can be carried and the maximum pressureneeded to support that load when used as asingle. For information on recommendedtire pressure seeInflation - Tire Pressure onpage 6-54.
Tire Size
The following illustration shows an example of atire size.
(A) P-Metric Tire:The United States version of ametric tire sizing system. The letter P as thefirst character in the tire size means a passengervehicle tire engineered to standards set by theU. S. Tire and Rim Association.
(B) Tire Width:The three-digit number indicatesthe tire section width in millimeters from sidewallto sidewall.
(C) Aspect Ratio:A two-digit number thatindicates the tire height-to-width measurements.For example, if the tire size aspect ratio is60, as shown in item C of the illustration, it wouldmean that the tire’s sidewall is 60 percent ashigh as it is wide.
(D) Construction Code:A letter code is used toindicate the type of ply construction in the tire.The letter R means radial ply construction;the letter D means diagonal or bias plyconstruction; and the letter B means belted-biasply construction.
(E) Rim Diameter:Diameter of the wheel ininches.
(F) Service Description:These charactersrepresent the load index and speed rating of thetire. The load index represents the load carrycapacity a tire is certified to carry. The speedrating is the maximum speed a tire is certified tocarry a load.
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Your vehicle has also been equipped with a TPMSmalfunction indicator to indicate when the system is notoperating properly. The TPMS malfunction indicatoris combined with the low tire pressure telltale. When thesystem detects a malfunction, the telltale will flash forapproximately one minute and then remain continuouslyilluminated. This sequence will continue uponsubsequent vehicle start-ups as long as themalfunction exists.
When the malfunction indicator is illuminated, thesystem may not be able to detect or signal low tirepressure as intended. TPMS malfunctions may occur fora variety of reasons, including the installation ofreplacement or alternate tires or wheels on the vehiclethat prevent the TPMS from functioning properly.Always check the TPMS malfunction telltale afterreplacing one or more tires or wheels on your vehicle toensure that the replacement or alternate tires andwheels allow the TPMS to continue to function properly.
SeeTire Pressure Monitor Operation on page 6-58for additional information.
Federal Communications Commission
(FCC) and Industry and Science
Canada
SeeRadio Frequency Statement on page 8-20forinformation regarding Part 15 of the FederalCommunications Commission (FCC) Rules andRSS-210/211 of Industry and Science Canada.
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System(TPMS). The TPMS is designed to warn the driverwhen a low tire pressure condition exists. TPMS sensorsare mounted onto each tire and wheel assembly,excluding the spare tire and wheel assembly. The TPMSsensors monitor the air pressure in the vehicle’s tiresand transmits the tire pressure readings to a receiverlocated in the vehicle.
When a low tire pressurecondition is detected, theTPMS illuminates thelow tire pressure warninglight located on theinstrument panel cluster.
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•The TPMS sensor matching process was started
but not completed or not completed successfullyafter rotating the vehicle’s tires. The DIC messageand TPMS malfunction light should go off oncethe TPMS sensor matching process is performedsuccessfully. See “TPMS Sensor Matching Process”later in this section.
•One or more TPMS sensors are missing or
damaged. The DIC message and the TPMSmalfunction light should go off when the TPMSsensors are installed and the sensor matchingprocess is performed successfully. See yourdealer/retailer for service.
•Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels.Tires and wheels other than those recommendedfor your vehicle could prevent the TPMS fromfunctioning properly. SeeBuying New Tires onpage 6-64.
•Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMScould cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or signala low tire condition. See your dealer/retailer forservice if the TPMS malfunction light and DIC messagecomes on and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code.Any time you rotate your vehicle’s tires or replace one ormore of the TPMS sensors, the identification codeswill need to be matched to the new tire/wheel position.The sensors are matched to the tire/wheel positionsin the following order: driver side front tire, passengerside front tire, passenger side rear tire, and driverside rear tire using a TPMS diagnostic tool. See yourdealer/retailer for service.
The TPMS sensors can also be matched to eachtire/wheel position by increasing or decreasing the tire’sair pressure. If increasing the tire’s air pressure, donot exceed the maximum inflation pressure indicated onthe tire’s sidewall.
To decrease air-pressure out of a tire you can use thepointed end of the valve cap, a pencil-style air pressuregage, or a key.
You have two minutes to match the first tire/wheelposition, and five minutes overall to match all fourtire/wheel positions. If it takes longer than two minutes,to match the first tire and wheel, or more than fiveminutes to match all four tire and wheel positions thematching process stops and you need to start over.
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The TPMS sensor matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON/RUN with theengine off.
3. Press the Remote Keyless Entry (RKE) transmitter’slock and unlock buttons at the same time forapproximately five seconds. The horn sounds twiceto signal the receiver is in relearn mode andTIRE LEARNING ACTIVE message displays on theDIC screen.
4. Start with the driver side front tire.
5. Remove the valve cap from the valve cap stem.Activate the TPMS sensor by increasing ordecreasing the tire’s air pressure for five seconds,or until a horn chirp sounds. The horn chirp,which may take up to 30 seconds to sound,confirms that the sensor identification code hasbeen matched to this tire and wheel position.
6. Proceed to the passenger side front tire, and repeatthe procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeatthe procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat theprocedure in Step 5. The horn sounds two times toindicate the sensor identification code has beenmatched to the driver side rear tire, and theTPMS sensor matching process is no longer active.The TIRE LEARNING ACTIVE message on theDIC display screen goes off.
9. Turn the ignition switch to LOCK/OFF.
10. Set all four tires to the recommended air pressurelevel as indicated on the Tire and LoadingInformation label.
11. Put the valve caps back on the valve stems.
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