steering CADILLAC DTS 2010 1.G Repair Manual

Repeat this until help arrives but only when you feelreally uncomfortable from the cold. Moving aboutto keep warm also helps.
If it takes some time for help to arrive, now and thenwhen you run the engine, push the acceleratorpedal slightly so the engine runs faster than the idlespeed. This keeps the battery charged to restartthe vehicle and to signal for help with the headlamps.Do this as little as possible to save fuel.
If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
Slowly and cautiously spin the wheels to free thevehicle when stuck in sand, mud, ice, or snow. SeeRocking Your Vehicle to Get It Out on page 5-17.
If the vehicle has a traction system, it can often help tofree a stuck vehicle. Refer to the vehicle’s tractionsystem in the Index. If stuck too severely for the tractionsystem to free the vehicle, turn the traction system offand use the rocking method.
{WARNING:
If the vehicle’s tires spin at high speed, they can
explode, and you or others could be injured.
The vehicle can overheat, causing an engine
compartment fire or other damage. Spin the
wheels as little as possible and avoid going above
55 km/h (35 mph) as shown on the speedometer.
For information about using tire chains on the vehicle,seeTire Chains on page 6-70.
Rocking Your Vehicle to Get It Out
Turn the steering wheel left and right to clear the areaaround the front wheels. Turn off any traction or stabilitysystem. Shift back and forth between R (Reverse) and aforward gear, spinning the wheels as little as possible.To prevent transmission wear, wait until the wheels stopspinning before shifting gears. Release the acceleratorpedal while shifting, and press lightly on the acceleratorpedal when the transmission is in gear. Slowly spinningthe wheels in the forward and reverse directions causes arocking motion that could free the vehicle. If that does notget the vehicle out after a few tries, it might need to betowed out. If the vehicle does need to be towed out, seeTowing Your Vehicle on page 5-24.
5-17

Dinghy Towing
Notice:If the vehicle is towed with all four wheelson the ground, the drivetrain components couldbe damaged. The repairs would not be covered bythe vehicle warranty. Do not tow the vehicle with allfour wheels on the ground.
The vehicle was not designed to be towed with all fourwheels on the ground. Use a dolly if the vehiclemust be towed. See “Dolly Towing” later in this sectionfor more information.
Dolly Towing
The vehicle can be towed using a dolly. To tow thevehicle using a dolly, follow these steps:
1. Put the front wheels on a dolly.
2. Put the gear shift lever in P (Park).
3. Set the parking brake.
4. Clamp the steering wheel in a straight-aheadposition with a clamping device designed for towing.
5. Remove the key from the ignition.
6. Secure the vehicle to the dolly.
7. Release the parking brake.
5-25

Following Distance
Stay at least twice as far behind the vehicle ahead asyou would when driving the vehicle without a trailer. Thiscan help to avoid situations that require heavy brakingand sudden turns.
Passing
More passing distance is needed when towing a trailer.Because the rig is longer, it is necessary to go muchfarther beyond the passed vehicle before returning tothe lane.
Backing Up
Hold the bottom of the steering wheel with one hand.Then, to move the trailer to the left, move that handto the left. To move the trailer to the right, move yourhand to the right. Always back up slowly and, if possible,have someone guide you.
Making Turns
Notice:Making very sharp turns while traileringcould cause the trailer to come in contact with thevehicle. The vehicle could be damaged. Avoidmaking very sharp turns while trailering.
When turning with a trailer, make wider turns thannormal. Do this so the trailer will not strike softshoulders, curbs, road signs, trees or other objects.Avoid jerky or sudden maneuvers. Signal well inadvance.
Turn Signals When Towing a Trailer
The arrows on the instrument panel flash wheneversignaling a turn or lane change. Properly hooked up, thetrailer lamps also flash, telling other drivers the vehicleis turning, changing lanes or stopping.
When towing a trailer, the arrows on the instrumentpanel flash for turns even if the bulbs on the trailer areburned out. For this reason you may think otherdrivers are seeing the signal when they are not. It isimportant to check occasionally to be sure thetrailer bulbs are still working.
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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

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

Power Steering Fluid
The power steering fluidreservoir is located next tothe underhood fuseblock on the passengerside of the vehicle.SeeEngine CompartmentOverview on page 6-12for more informationon location.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluidunless you suspect there is a leak in the system oryou hear an unusual noise. A fluid loss in this systemcould indicate a problem. Have the system inspectedand repaired.
How to Check Power Steering Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartmentcool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a cleanrag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level onthe dipstick.
The level should be at the FULL COLD mark. Ifnecessary, add only enough fluid to bring the level up tothe mark.
What to Use
To determine what kind of fluid to use, seeRecommended Fluids and Lubricants on page 7-8.Always use the proper fluid.
Notice:Use of the incorrect fluid may damage thevehicle and the damages may not be covered bythe vehicle’s warranty. Always use the correct fluidlisted inRecommended Fluids and Lubricantson page 7-8.
6-30

2. Get the vehicles close enough so the jumper cablescan reach, but be sure the vehicles are not touchingeach other. If they are, it could cause a groundconnection you do not want. You would not be ableto start your vehicle and the bad grounding coulddamage the electrical systems.
To avoid the possibility of the vehicles rolling, setthe parking brake firmly on both vehicles involved inthe jump start procedure. Put an automatictransmission in P (Park) or a manual transmissionin NEUTRAL before setting the parking brake.
Notice:If you leave the radio or other accessorieson during the jump starting procedure, they could bedamaged. The repairs would not be covered by thewarranty. Always turn off the radio and otheraccessories when jump starting the vehicle.
3. Turn off the ignition on both vehicles. Unplugunnecessary accessories plugged into the cigarettelighter or the accessory power outlets. Turn offthe radio and all lamps that are not needed. Thiswill avoid sparks and help save both batteries.And it could save the radio!
4. Open the hoods and locate the positive (+) andnegative (!) terminal locations on the othervehicle. Your vehicle has a remote positive (+) jumpstarting terminal and a remote negative (!) jumpstarting terminal.
The remote positive (+) terminal is located in theengine compartment on the passenger’s side of thevehicle. Lift the red plastic cap to access theterminal. SeeEngine Compartment Overview onpage 6-12for more information on the locationof the remote positive (+) terminal.
A second remote positive (+) terminal is located onthe rear underseat fuse block.
The remote negative (!) terminal is located behindthe power steering pulley, near the engine cover.It is marked GND (!).
4.6L LD8 Engine shown,4.6L L37 Enginesimilar
6-37

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.
6-52

Tire Chains
{WARNING:
Do not use tire chains. There is not enough
clearance. Tire chains used on a vehicle without
the proper amount of clearance can cause
damage to the brakes, suspension or other vehicle
parts. The area damaged by the tire chains could
cause you to lose control of the vehicle and you or
others may be injured in a crash.
Use another type of traction device only if its
manufacturer recommends it for use on the
vehicle and tire size combination and road
conditions. Follow that manufacturer’s instructions.
To help avoid damage to the vehicle, drive slowly,
readjust or remove the device if it is contacting the
vehicle, and do not spin the vehicle’s wheels. If
you do find traction devices that will fit, install
them on the front tires.
If a Tire Goes Flat
It is unusual for a tire to blowout while you are driving,especially if you maintain your vehicle’s tires properly.If air goes out of a tire, it is much more likely to leak outslowly. But if you should ever have a blowout, hereare a few tips about what to expect and what to do:
If a front tire fails, the flat tire creates a drag that pullsthe vehicle toward that side. Take your foot off theaccelerator pedal and grip the steering wheel firmly.Steer to maintain lane position, and then gently brake toa stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like askid and may require the same correction you woulduse in a skid. In any rear blowout remove your foot fromthe accelerator pedal. Get the vehicle under controlby steering the way you want the vehicle to go. It maybe very bumpy and noisy, but you can still steer. Gentlybrake to a stop, well off the road if possible.
6-70

FusesUsage
8Steering Wheel Illumination
9Front Heated/Cooled Seat Module
10Run 2 - Heated/Cooled Seats
11Rear Heated Seat Module
12RPA Module
13PASS-Key®III System
14Unlock/Lock Module
15Magnetic Ride Control
16Not Used
17Sunroof
18Body Control Module (BCM) Dim
19Body Control Module (BCM)
20Run 1-Heated Steering Wheel
21Ignition Switch
22Driver Door Module
23Rear Lumbar
24Electronic Leveling Control Module
25Body Control Module(Left Turn Signal)
26Cigarette Lighter, Auxiliary PowerOutlet
FusesUsage
27Navigation (Optional)
28Retained Accessory Power 1 (RAP)
29Passenger Door Module
30Sensing and Diagnostic Module
31Accessory Power Outlets
32Body Control Module (BCM)(Inadvertent)
33Retained Accessory Power 2 (RAP)
34Canister Vent Solenoid
35Body Control Module (Courtesy)
36Body Control Module(Right Turn Signal)
37Trunk Release
38Amplifier, Radio
39Body Control Module (CHMSL)
40Body Control Module
41Stoplamp (optional)
42OnStar®Module
43Body Modules
44Radio
45Door Unlatch (optional)
6-107