2010 CADILLAC DTS ECU

Notice:Overloading the vehicle may causedamage. Repairs would not be covered by thevehicle warranty. Do not overload the vehicle.
If you put things inside your vehicle, likesuitcases, tools, packages, or anything else, theywill go as fast as the vehicle goes. If you haveto stop or turn quickly, or if there is a crash, theywill keep going.
{WARNING:
Things you put inside your vehicle can strikeand injure people in a sudden stop or turn, orin a crash.
•Put things in the trunk of your vehicle. In
a trunk, put them as far forward as youcan. Try to spread the weight evenly.
•Never stack heavier things, like
suitcases, inside the vehicle so that someof them are above the tops of the seats.
•Do not leave an unsecured child restraint
in your vehicle.
•When you carry something inside the
vehicle, secure it whenever you can.
Automatic Level Control
This feature keeps the rear of your vehicle levelas the load changes. It is automatic, you donot need to adjust anything.
This type of level control is fully automatic and willprovide a better leveled riding position as well asbetter handling under a variety of passenger andloading conditions. An air compressor connected tothe rear shocks will raise or lower the rear of thevehicle to maintain proper vehicle height. Thesystem is activated when the ignition key is turnedto ON/RUN and will automatically adjust vehicleheight thereafter. The system may exhaust(lower vehicle height) for up to ten minutes afterthe ignition key has been turned to LOCK/OFF.You may hear the air compressor operating whenthe height is being adjusted.
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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.
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Maximum trailer weight is calculated assuming only thedriver is in the tow vehicle and it has all the requiredtrailering equipment. The weight of additional optionalequipment, passengers and cargo in the tow vehiclemust be subtracted from the maximum trailer weight.
Ask your dealer/retailer for trailering information oradvice, or write us at our Customer Assistance Offices.SeeCustomer Assistance Offices on page 8-6formore information.
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important weightto measure because it affects the total gross weightof the vehicle. The Gross Vehicle Weight (GVW)includes the curb weight of the vehicle, any cargocarried in it, and the people who will be riding in thevehicle. If there are a lot of options, equipment,passengers or cargo in the vehicle, it will reduce thetongue weight the vehicle can carry, which will alsoreduce the trailer weight the vehicle can tow. If towing atrailer, the tongue load must be added to the GVWbecause the vehicle will be carrying that weight, too.SeeLoading the Vehicle on page 5-18for moreinformation about the vehicle’s maximum load capacity.
Using a weight-carrying hitch, the trailer tongue (A)should weigh 10 to 15 percent of the total loaded trailerweight (B).
After loading the trailer, weigh the trailer and then thetongue, separately, to see if the weights are proper.If they are not, adjustments might be made by movingsome items around in the trailer.
Total Weight on the Vehicle’s Tires
Be sure the vehicle’s tires are inflated to the upper limitfor cold tires. These numbers can be found on theCertification/Tire label. SeeLoading the Vehicle onpage 5-18. Make sure not to go over the GVW limit for thevehicle, including the weight of the trailer tongue.
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Hitches
It is important to have the correct hitch equipment.Crosswinds, large trucks going by and rough roads are afew reasons why the right hitch is needed. Here are somerules to follow:
•The rear bumper on the vehicle is not intended for
hitches. Do not attach rental hitches or otherbumper-type hitches to it. Use only a frame-mountedhitch that does not attach to the bumper.
•Will any holes be made in the body of the vehicle
when the trailer hitch is installed? If there are, thenbe sure to seal the holes later when the hitch isremoved. If the holes are not sealed, dirt, water, anddeadly carbon monoxide (CO) from the exhaust canget into the vehicle. SeeEngine Exhaust onpage 3-34for more information.
Safety Chains
Always attach chains between the vehicle and thetrailer. Cross the safety chains under the tongue of thetrailer to help prevent the tongue from contactingthe road if it becomes separated from the hitch.Instructions about safety chains may be provided by thehitch manufacturer or by the trailer manufacturer.Follow the manufacturer’s recommendation for attachingsafety chains and do not attach them to the bumper.Always leave just enough slack so the rig can turn.Never allow safety chains to drag on the ground.
Trailer Brakes
Because the vehicle has StabiliTrak®, do not tap intothe vehicle’s hydraulic brake system. If you do,both brake systems will not work well, or at all.
Be sure to read and follow the instructions for the trailerbrakes so they are installed, adjusted and maintainedproperly.
Driving with a Trailer
Towing a trailer requires a certain amount of experience.Get to know the rig before setting out for the openroad. Get acquainted with the feel of handling andbraking with the added weight of the trailer. And alwayskeep in mind that the vehicle you are driving is nowlonger and not as responsive as the vehicle is by itself.
Before starting, check all trailer hitch parts andattachments, safety chains, electrical connectors, lamps,tires and mirror adjustments. If the trailer has electricbrakes, start the vehicle and trailer moving andthen apply the trailer brake controller by hand to be surethe brakes are working. This checks the electricalconnection at the same time.
During the trip, check occasionally to be sure that theload is secure, and that the lamps and any trailer brakesare still working.
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Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
•start the engine,
•shift into a gear, and
•release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and storethe chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling atrailer. SeeScheduled Maintenance on page 7-3for moreinformation. Things that are especially important in traileroperation are automatic transmission fluid, engine oil,belts, cooling system and brake system. It is a good ideato inspect these before and during the trip.
Check periodically to see that all hitch nuts and boltsare tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat duringsevere operating conditions. SeeEngine Overheating onpage 6-27.
Changing a Tire When Trailer Towing
If the vehicle gets a flat tire while towing a trailer,be sure to secure the trailer and disconnect it from thevehicle before changing the tire.
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4. With the coolant surge tank cap off, start the engineand let it run until you can feel the upper radiatorhose getting hot. Watch out for the enginecooling fans.
By this time, the coolant level inside the coolantsurge tank may be lower. If the level is lower, addmore of the proper mixture to the coolant surge tankuntil the level reaches the FULL COLD mark onthe side of the coolant surge tank.
5. Replace the cap. Be sure the cap is hand-tight andfully seated.
Notice:If the pressure cap is not tightly installed,coolant loss and possible engine damage mayoccur. Be sure the cap is properly and tightlysecured.
If coolant is needed, add the proper DEX-COOL®
coolant mixture at the coolant recovery tank.
Engine Overheating
The vehicle has several indicators to warn of engineoverheating.
There is an engine temperature warning light and/orgage on the instrument panel cluster. SeeEngineCoolant Temperature Warning Light on page 4-55andEngine Coolant Temperature Gage on page 4-56.
The vehicle may also display a ENGINE OVERHEATEDIDLE ENGINE message or an ENGINE OVERHEATEDSTOP ENGINE message displayed in the DriverInformation Center (DIC). SeeDIC Warnings andMessages on page 4-67for more information. You willalso hear a chime.
4.6L L37 Engine shown, 4.6L LD8 Engine similar
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{WARNING:
A battery that is not properly vented can let
sulfuric acid fumes into the area under the rear
seat cushion. These fumes can damage the rear
seat safety belt systems. You might not be able to
see this damage and the safety belts might not
provide the protection needed in a crash. If a
replacement battery is ever needed, it must be
vented in the same manner as the original battery.
Always make sure that the vent hose is properly
reattached before reinstalling the seat cushion.
To be sure the vent hose (A) is properly attached, thevent hose connectors (B) must be securely reattached tothe vent outlets (C) on each side of the battery andthe vent assembly grommet (D) must be secured to thefloor pan (E).
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A. Cover
B. Wing Nut
C. Retainer
D. Jack and Wheel Wrench
E. Jack Container
F. Spare Tire
G. Bolt
1. Open the trunk. SeeTrunk on page 3-12.
2. Reinstall the spare tire (F), face down, making sureto line up the wheel center hole with the bolt (G)and place it on the compartment floor.
3. Insert the jack container (E) into the spare tire (F).Then insert the jack and wheel wrench (D) into thecenter of the spare tire making sure to line upthe wheel nut hole with the bolt (G) on thecompartment floor.
4. Secure the spare tire and the jack container withthe retainer (C) and then the wing nut (B).
5. Reinstall the spare tire cover (A).
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