2010 CADILLAC DTS fuel pressure

A.Underhood Fuse Block on page 6-101.
B. Remote Positive (+) Terminal. SeeJump Starting onpage 6-36.
C. Windshield Washer Fluid Reservoir. See “AddingWasher Fluid” underWindshield Washer Fluidon page 6-31.
D. Engine Coolant Surge Tank and Pressure Cap.SeeEngine Coolant on page 6-23.
E. Remote Negative (!) Terminal. SeeJump Startingon page 6-36.
F.Power Steering Fluid on page 6-30.
G. Engine Oil Fill Cap. See “When to Add Engine Oil”underEngine Oil on page 6-13.
H. Engine Oil Dipstick. See “Checking Engine Oil”underEngine Oil on page 6-13.
I. Brake Master Cylinder Reservoir. See “Brake Fluid”underBrakes on page 6-32.
J. Automatic Transmission Fluid Cap and Dipstick(Out of View). SeeAutomatic Transmission Fluid onpage 6-19.
K.Engine Air Cleaner/Filter on page 6-17.
Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil level at eachfuel fill. In order to get an accurate reading, the oil mustbe warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. SeeEngine Compartment Overview on page 6-12forthe location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutesto drain back into the oil pan. If this is not done, theoil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towelor cloth, then push it back in all the way. Remove itagain, keeping the tip down, and check the level.
6-13

Tire Terminology and Definitions
Air Pressure:The amount of air inside thetire pressing outward on each square inch of thetire. Air pressure is expressed in pounds persquare inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combinedweight of optional accessories. Some examples ofoptional accessories are, automatic transmission,power steering, power brakes, power windows,power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s heightto its width.
Belt:A rubber coated layer of cords that is locatedbetween the plies and the tread. Cords may bemade from steel or other reinforcing materials.
Bead:The tire bead contains steel wires wrappedby steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the pliesare laid at alternate angles less than 90 degreesto the centerline of the tread.
Cold Tire Pressure:The amount of air pressure ina tire, measured in pounds per square inch (psi) orkilopascals (kPa) before a tire has built up heatfrom driving. SeeInflation - Tire Pressure onpage 6-54.
Curb Weight:The weight of a motor vehicle withstandard and optional equipment including themaximum capacity of fuel, oil, and coolant,but without passengers and cargo.
DOT Markings:A code molded into the sidewallof a tire signifying that the tire is in compliancewith the U.S. Department of Transportation (DOT)motor vehicle safety standards. The DOT codeincludes the Tire Identification Number (TIN),an alphanumeric designator which can also identifythe tire manufacturer, production plant, brand,and date of production.
GVWR:Gross Vehicle Weight Rating. SeeLoading the Vehicle on page 5-18.
GAWR FRT:Gross Axle Weight Rating for thefront axle. SeeLoading the Vehicle on page 5-18.
GAWR RR:Gross Axle Weight Rating for therear axle. SeeLoading the Vehicle on page 5-18.
Intended Outboard Sidewall:The side of anasymmetrical tire, that must always face outwardwhen mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
Light Truck (LT-Metric) Tire:A tire used onlight duty trucks and some multipurpose passengervehicles.
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Treadwear Indicators:Narrow bands, sometimescalled wear bars, that show across the tread ofa tire when only 1/16 inch (1.6 mm) of treadremains. SeeWhen It Is Time for New Tires onpage 6-64.
UTQGS (Uniform Tire Quality GradingStandards):A tire information system thatprovides consumers with ratings for a tire’straction, temperature, and treadwear. Ratings aredetermined by tire manufacturers usinggovernment testing procedures. The ratings aremolded into the sidewall of the tire. SeeUniformTire Quality Grading on page 6-67.
Vehicle Capacity Weight:The number ofdesignated seating positions multiplied by 150 lbs(68 kg) plus the rated cargo load. SeeLoadingthe Vehicle on page 5-18.
Vehicle Maximum Load on the Tire:Load on anindividual tire due to curb weight, accessoryweight, occupant weight, and cargo weight.
Vehicle Placard:A label permanently attached toa vehicle showing the vehicle’s capacity weightand the original equipment tire size andrecommended inflation pressure. See “Tire andLoading Information Label” underLoadingthe Vehicle on page 5-18.
Inflation - Tire Pressure
Tires need the correct amount of air pressure tooperate effectively.
Notice:Do not let anyone tell you thatunder-inflation or over-inflation is all right. It isnot. If your tires do not have enough air(under-inflation), you can get the following:
•Too much flexing
•Too much heat
•Tire overloading
•Premature or irregular wear
•Poor handling
•Reduced fuel economy
If your tires have too much air (over-inflation),you can get the following:
•Unusual wear
•Poor handling
•Rough ride
•Needless damage from road hazards
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If your vehicle has P235/55R17 or P245/50R18 sizetires, and you will be driving at speeds of 100 mph(160 km/h) or higher, where it is legal, set the coldinflation pressure to the maximum inflation pressureshown on the tire sidewall, or 38 psi (265 kPa),whichever is lower. See the example following.
Example:
You will find the maximum load and inflation pressuremolded on the tire’s sidewall, in small letters, nearthe rim flange. It will read something like this: Maximumload 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.
For this example, you would set the inflation pressure forhigh-speed driving at 38 psi (265 kPa).
When you end this high-speed driving, return the tires tothe cold inflation pressure shown on the Tire andLoading Information label. SeeLoading the Vehicle onpage 5-18.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radioand sensor technology to check tire pressure levels. TheTPMS sensors monitor the air pressure in yourvehicle’s tires and transmit tire pressure readings to areceiver located in the vehicle.
Each tire, including the spare (if provided), should bechecked monthly when cold and inflated to the inflationpressure recommended by the vehicle manufactureron the vehicle placard or tire inflation pressure label.(If your vehicle has tires of a different size than the sizeindicated on the vehicle placard or tire inflationpressure label, you should determine the proper tireinflation pressure for those tires.)
As an added safety feature, your vehicle has beenequipped with a tire pressure monitoring system (TPMS)that illuminates a low tire pressure telltale when oneor more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltaleilluminates, you should stop and check your tires assoon as possible, and inflate them to the properpressure. Driving on a significantly under-inflated tirecauses the tire to overheat and can lead to tire failure.Under-inflation also reduces fuel efficiency and tiretread life, and may affect the vehicle’s handlingand stopping ability.
Please note that the TPMS is not a substitute for propertire maintenance, and it is the driver’s responsibility tomaintain correct tire pressure, even if under-inflation hasnot reached the level to trigger illumination of theTPMS low tire pressure telltale.
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•Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system mustbe repaired and the fluid level checked.
•Engine air cleaner filter inspection. SeeEngine Air
Cleaner/Filter on page 6-17.
•Brake system inspection (or every 12 months,
whichever occurs first).
•Steering and suspension inspection. Visual
inspection for damaged, loose, or missing parts orsigns of wear.
•Engine cooling system inspection. Visual inspection
of hoses, pipes, fittings, and clamps andreplacement, if needed.
•Windshield wiper blade inspection for wear,
cracking, or contamination and windshield and wiperblade cleaning, if contaminated. SeeWindshieldand Wiper Blades on page 6-97. Worn or damagedwiper blade replacement. SeeWindshield WiperBlade Replacement on page 6-44.
•Body hinges and latches, key lock cylinders,
console hinges, and glove box door hingeslubrication. SeeRecommended Fluids andLubricants on page 7-8. More frequent lubricationmay be required when vehicle is exposed to acorrosive environment.
Applying silicone grease on weatherstrips with aclean cloth makes them last longer, seal better, andnot stick or squeak.
•Restraint system component check. SeeChecking
the Restraint Systems on page 2-74.
•Automatic transmission fluid level check and adding
fluid, if needed. SeeAutomatic Transmission Fluidon page 6-19.
Additional Required Services
At Each Fuel Stop
•Engine oil level check. SeeEngine Oil on
page 6-13.
•Engine coolant level check. SeeEngine Coolant on
page 6-23.
•Windshield washer fluid level check. SeeWindshield
Washer Fluid on page 6-31.
Once a Month
•Tire inflation check. SeeInflation - Tire Pressure on
page 6-54.
•Tire wear inspection. SeeTire Inspection and
Rotation on page 6-62.
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Once a Year
•Starter switch check. SeeOwner Checks and
Services on page 7-6.
•Parking brake and automatic transmission P (Park)
mechanism check. SeeOwner Checks andServices on page 7-6.
•Automatic transmission shiftlock control system
check. SeeOwner Checks and Services onpage 7-6.
•Ignition transmission lock check. SeeOwner
Checks and Services on page 7-6.
•Engine cooling system and pressure cap pressure
check. Radiator and air conditioning condenseroutside cleaning. SeeCooling System on page 6-22.
•Exhaust system and nearby heat shields inspection
for loose or damaged components.
•Accelerator pedal check for damage, high effort, or
binding. Replace if needed.
First Engine Oil Change After Every
40 000 km/25,000 Miles
•Fuel system inspection for damage or leaks.
•Passenger compartment air filter replacement
(or every 12 months, whichever occurs first). Morefrequent replacement may be required if vehicleis driven regularly under dusty conditions.
First Engine Oil Change After Every
80 000 km/50,000 Miles
•Engine air cleaner filter replacement. SeeEngine
Air Cleaner/Filter on page 6-17.
•Automatic transmission fluid and filter change
(severe service) for vehicles mainly driven in heavycity traffic in hot weather, in hilly or mountainousterrain, when frequently towing a trailer, or used fortaxi, police, or delivery service. SeeAutomaticTransmission Fluid on page 6-19.
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