2010 CADILLAC DTS air conditioning

If No Steam Is Coming From The
Engine Compartment
If an engine overheat warning is displayed but no steamcan be seen or heard, the problem may not be tooserious. Sometimes the engine can get a little too hotwhen the vehicle:
•Climbs a long hill on a hot day.
•Stops after high-speed driving.
•Idles for long periods in traffic.
•Tows a trailer.
If the overheat warning is displayed with no sign ofsteam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature andto the highest fan speed. Open the windows asnecessary.
3. In heavy traffic, let the engine idle in N (Neutral) whilestopped. If it safe to do so, pull off the road, shift toP (Park) or N (Neutral) and let the engine idle.
If the temperature overheat gage is no longer in theoverheat zone or an overheat warning no longer displays,the vehicle can be driven. Continue to drive the vehicleslow for about 10 minutes. Keep a safe vehicle distancefrom the car in front of you. If the warning does not comeback on, continue to drive normally.
If the warning continues, pull over, stop, and park thevehicle right away.
If there is no sign of steam, idle the engine for threeminutes while parked. If the warning is still displayed, turnoff the engine until it cools down. Also, see!OverheatedEngine Protection Operating Mode!next in this section.
Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and themessage ENGINE OVERHEATED STOP ENGINE isdisplayed, an overheat protection mode which alternatesfiring groups of cylinders helps prevent engine damage.In this mode, you will notice a loss in power andengine performance. This operating mode allows yourvehicle to be driven to a safe place in an emergency.Driving extended miles (km) and/or towing a trailer in theoverheat protection mode should be avoided.
Notice:After driving in the overheated engineprotection operating mode, to avoid engine damage,allow the engine to cool before attempting anyrepair. The engine oil will be severely degraded.Repair the cause of coolant loss, change the oil andreset the oil life system. SeeEngine Oil onpage 6-13.
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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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FusesUsage
1Engine Control Module (ECM), Crank
2Fuel Injectors Odd
3Fuel Injectors Even
4Air Conditioning Clutch
FusesUsage
5Air Injection Reactor (AIR) Solenoid
6Oxygen Sensor
7Emission Device
8Transmission, Ignition 1
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FusesUsage
9Engine Control Module (ECM),Powertrain Control Module (PCM)
10Climate Control System, InstrumentPanel Cluster Ignition 1
11Airbag System
12Horn
13Windshield Wiper
14Fog Lamps
15Right High-Beam Headlamp
16Left High-Beam Headlamp
17Left Low-Beam Headlamp
18Right Low-Beam Headlamp
19Windshield Washer Pump Motor
20Left Front Cornering Lamp
21Right Front Cornering Lamp
22Air Pump (J-Case)
23Antilock Brake System (ABS)(J-Case)
FusesUsage
24Starter (J-Case)
25Antilock Brake System (ABS)Motor (J-Case)
26Cooling Fan 2 (J-Case)
27Cooling Fan 1 (J-Case)
RelaysUsage
29Powertrain
30Starter
31Cooling Fan 2
32Cooling Fan 3
33Cooling Fan 1
34Air Conditioning Clutch
35Air Injection Reactor (AIR) Solenoid
36Ignition
37Air Pump
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Capacities and Specifications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids andLubricants on page 7-8for more information.
Application
Capacities
EnglishMetric
Air Conditioning Refrigerant
For the air conditioning system refrigerantcharge amount, see the refrigerant caution labellocated under the hood. See your dealer/retailerfor more information.
Cooling System12.6 qt12.0 L
Engine Oil with Filter7.5 qt7.1 L
Fuel Tank18.5 gal70.0 L
Transmission Fluid (Bottom Pan Removal)7.4 qt7.0 L
Wheel Nut Torque100 lb ft140Y
All capacities are approximate. When adding, be sure to fill to the approximate level as recommended in thismanual. Recheck fluid level after filling.
Engine Specifications
EngineVIN CodeTransmissionSpark Plug Gap
4.6L DOHC V8 EngineYAutomatic0.050 in (1.27 mm)
4.6L DOHC V8 Engine9Automatic0.050 in (1.27 mm)
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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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First Engine Oil Change After Every
120 000 km/75,000 Miles
•Professional Vehicle Only: Engine cooling system
drain, flush, and refill, cooling system and cappressure check, and cleaning of outside of radiatorand air conditioning condenser (or every 5 years,whichever occurs first). SeeEngine Coolanton page 6-23.An Emission Control Service.
First Engine Oil Change After Every
160 000 km/100,000 Miles
•Automatic transmission fluid and filter change
(normal service). SeeAutomatic Transmission Fluidon page 6-19.
•Spark plug replacement.An Emission Control
Service.
First Engine Oil Change After Every
240 000 km/150,000 Miles
•Except Professional Vehicle: Engine cooling system
drain, flush, and refill, cooling system and cappressure check, and cleaning of outside of radiatorand air conditioning condenser (or every 5 years,whichever occurs first). SeeEngine Coolanton page 6-23.An Emission Control Service.
•Engine accessory drive belt inspection for fraying,
excessive cracks, or obvious damage andreplacement, if needed.An Emission ControlService.
Owner Checks and Services
Starter Switch Check
{WARNING:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enoughroom around the vehicle.
2. Firmly apply both the parking brake and the regularbrake. SeeParking Brake on page 3-30.
Do not use the accelerator pedal, and be ready toturn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicleshould start only in P (Park) or N (Neutral). If thevehicle starts in any other position, contactyour dealer/retailer for service.
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