Engine Coolant Heater
The engine coolant heater can provide easier startingand better fuel economy during engine warm-up in coldweather conditions at or below!18°C (0°F). Vehicleswith an engine heater should be plugged in at leastfour hours before starting. An internal thermostat inthe plug-end of the cord may exist which will preventengine coolant heater operation at temperaturesabove!18°C (0°F).
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.The cord is secured to the Engine CompartmentFuse Block with a clip. Carefully remove the wiretie which secures the electrical cord. Do not cut theelectrical cord.
3. Plug the cord into a normal, grounded 110-voltAC outlet.
{WARNING:
Plugging the cord into an ungrounded outlet could
cause an electrical shock. Also, the wrong kind of
extension cord could overheat and cause a fire.
You could be seriously injured. Plug the cord into
a properly grounded three-prong 110-volt AC
outlet. If the cord will not reach, use a heavy-duty
three-prong extension cord rated for at least
15 amps.
4. Before starting the engine, be sure to unplug andstore the cord as it was before to keep it away frommoving engine parts. If you do not, it could bedamaged.
The length of time the heater should remain plugged independs on several factors. Ask a dealer/retailer in thearea where you will be parking the vehicle for the bestadvice on this.
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ENGINE OVERHEATED IDLE ENGINE
Notice:If you drive your vehicle while the engine isoverheating, severe engine damage may occur. If anoverheat warning appears on the instrument panelcluster and/or DIC, stop the vehicle as soon aspossible. SeeEngine Overheatingon page 7!34formore information.
This message displays when the engine coolanttemperature is too hot. Stop and allow the vehicle toidle until it cools down. SeeEngine CoolantTemperature Gage on page 4!35.
SeeOverheated Engine Protection Operating Modeonpage 7!37for information on driving to a safe place inan emergency.
ENGINE OVERHEATED STOP ENGINE
Notice:If you drive your vehicle while the engine isoverheating, severe engine damage may occur. If anoverheat warning appears on the instrument panelcluster and/or DIC, stop the vehicle as soon aspossible. SeeEngine Overheatingon page 7!34formore information.
This message displays and a chime sounds if theengine cooling system reaches unsafe temperatures foroperation. Stop and turn off the vehicle as soon as it issafe to do so to avoid severe damage. This messageclears when the engine has cooled to a safe operatingtemperature.
ENGINE POWER IS REDUCED
This message displays and a chime sounds when thecooling system temperature gets too hot and the enginefurther enters the engine coolant protection mode.SeeEngine Overheatingon page 7!34for furtherinformation.
This message also displays when the vehicle's enginepower is reduced. Reduced engine power can affect thevehicle's ability to accelerate. If this message is on, butthere is no reduction in performance, proceed to yourdestination. The performance may be reduced the nexttime the vehicle is driven. The vehicle may be driven ata reduced speed while this message is on, butacceleration and speed may be reduced. Anytime thismessage stays on, the vehicle should be taken to yourdealer/retailer for service as soon as possible.
FUEL LEVEL LOW
This message displays and a chime sounds if the fuellevel is low. Refuel as soon as possible. SeeFuel Gageon page 4!40andFuelo n p a g e 7!7for moreinformation.
HOOD OPEN
This message displays and a chime sounds if the hoodis not fully closed. Stop and turn off the vehicle, checkthe hood for obstructions, and close the hood again.Check to see if the message still appears on the DIC.
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Gasoline Octane
If the vehicle has the 6.0L V8 engine (VIN Code J), useregular unleaded gasoline with a posted octane ratingof 87 or higher. If the octane rating is less than 87, anaudible knocking noise, commonly referred to as sparkknock, might be heard when driving. If this occurs, usea gasoline rated at 87 octane or higher as soon aspossible. If heavy knocking is heard when usinggasoline rated at 87 octane or higher, the engineneeds service.
If the vehicle has the 6.2L V8 engine (VIN Code F), usepremium unleaded gasoline with a posted octane ratingof 91 or higher. You can also use regular unleadedgasoline rated at 87 octane or higher, but the vehicle'sacceleration could be slightly reduced, and a slightaudible knocking noise, commonly referred to as sparkknock, might be heard. If the octane is less than 87, youmight notice a heavy knocking noise when you drive.If this occurs, use a gasoline rated at 87 octane orhigher as soon as possible. Otherwise, you coulddamage the engine. If heavy knocking is heard whenusing gasoline rated at 87 octane or higher, the engineneeds service.
Gasoline Specifications
At a minimum, gasoline should meet ASTMspecification D 4814 in the United States orCAN/CGSB!3.5 or 3.511 in Canada. Some gasolinescontain an octane-enhancing additive calledmethylcyclopentadienyl manganese tricarbonyl (MMT).We recommend against the use of gasolines containingMMT. SeeAdditiveso n p a g e 7!9for additionalinformation.
California Fuel
If the vehicle is certified to meet California EmissionsStandards, it is designed to operate on fuels that meetCalifornia specifications. See the underhood emissioncontrol label. If this fuel is not available in statesadopting California emissions standards, the vehiclewill operate satisfactorily on fuels meeting federalspecifications, but emission control system performancemight be affected. The malfunction indicator lamp couldturn on and the vehicle might fail a smog!check test.SeeMalfunction Indicator Lampon page 4!36. If thisoccurs, return to your authorized dealer/retailer fordiagnosis. If it is determined that the condition is causedby the type of fuel used, repairs might not be coveredby the vehicle warranty.
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Hood Release
To open the hood:
1. Pull the handle withthis symbol on it. It islocated inside thevehicle to the lower leftof the steering wheel.
2. Then go to the front of the vehicle and locatethe secondary hood release, near the centerof the grille.
3. Push the secondary hood release to the right.
4. Lift the hood.
Before closing the hood, be sure all the filler capsare on properly. Then bring the hood from full opento within 6 inches (152 mm) from the closedposition, pause, then push the front center of thehood with a swift, firm motion to fully closethe hood.
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Engine Compartment Overview
If the vehicle is a Two-mode Hybrid, see the Two-mode Hybrid manual for more information.
When you open the hood on the 6.2L engine this is what you will see:
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If you do decide to lift the hood , make sure the vehicleis parked on a level surface.
Then check to see if the engine cooling fans arerunning. If the engine is overheating, both fans shouldbe running. If they are not, do not continue to run theengine and have the vehicle serviced.
Notice:Engine damage from running your enginewithout coolant is not covered by your warranty.SeeOverheated Engine Protection Operating Modeon page 7!37for information on driving to a safeplace in an emergency.
Notice:If the engine catches fire while driving withno coolant, the vehicle can be badly damaged. Thecostly repairs would not be covered by the vehiclewarranty. SeeOverheated Engine ProtectionOperating Modeon page 7!37for information ondriving to a safe place in an emergency.
If Steam Is Coming From The Engine
Compartment
{WARNING:
Steam from an overheated engine can burn you
badly, even if you just open the hood. Stay away
from the engine if you see or hear steam coming
from it. Turn it off and get everyone away from the
vehicle until it cools down. Wait until there is no
sign of steam or coolant before you open
the hood.
If you keep driving when the vehicles engine is
overheated, the liquids in it can catch fire. You or
others could be badly burned. Stop the engine if it
overheats, and get out of the vehicle until the
engine is cool.
SeeOverheated Engine Protection Operating
Modeon page 7!37for information on driving to
a safe place in an emergency.
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Notice:Ignoring these steps could result in costlydamage to the vehicle that would not be covered bythe warranty.
Trying to start the vehicle by pushing or pulling itwill not work, and it could damage the vehicle.
1. Check the other vehicle. It must have a 12-voltbattery with a negative ground system.
Notice:If the other vehicle's system is not a 12-voltsystem with a negative ground, both vehicles canbe damaged. Only use vehicles with 12-volt systemswith negative grounds to jump start your vehicle.
2. Get the vehicles close enough so the jumpercables can reach, but be sure the vehicles are nottouching each other. If they are, it could cause aground connection you do not want. You would notbe able to start your vehicle, and the badgrounding could damage the electrical systems.
To avoid the possibility of the vehicles rolling, setthe parking brake firmly on both vehicles involvedin the jump start procedure. Put the automatictransmission in P (Park) or a manual transmissionin Neutral before setting the parking brake. If youhave a four-wheel-drive vehicle, be sure thetransfer case is in a drive gear, not in Neutral.
Notice:If you leave the radio or other accessorieson during the jump starting procedure, they couldbe damaged. The repairs would not be covered bythe warranty. Always turn off the radio and otheraccessories when jump starting the vehicle.
3. Turn off the ignition on both vehicles. Unplugunnecessary accessories plugged into thecigarette lighter or the accessory power outlets.Turn off the radio and all the lamps that are notneeded. This avoids sparks and helps save bothbatteries. And it could save the radio!
4. Open the hood on the other vehicle and locate thepositive (+) and negative (!) terminal locations onthat vehicle.
Your vehicle has a remote positive (+) jump startingterminal and a remote negative (!) jump startingterminal. You should always use these remoteterminals instead of the terminals on the battery.
If the vehicle has a remote positive (+) terminal, itis located under a red plastic cover at the positivebattery post. To uncover the remote positive (+)terminal, open the red plastic cover.
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The remote negative (-) terminal is a stud locatedon the right front of the engine, where the negativebattery cable attaches.
SeeEngine Compartment Overviewon page 7!16for more information on the location of the remotepositive (+) and remote negative (!) terminals.
{WARNING:
An electric fan can start up even when the engine
is not running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
{WARNING:
Using an open flame near a battery can cause
battery gas to explode. People have been hurt
doing this, and some have been blinded. Use a
flashlight if you need more light.
Be sure the battery has enough water. You do not
need to add water to the battery installed in your
new vehicle. But if a battery has filler caps, be
sure the right amount of fluid is there. If it is low,
add water to take care of that first. If you do not,
explosive gas could be present.
Battery fluid contains acid that can burn you. Do
not get it on you. If you accidentally get it in your
eyes or on your skin, flush the place with water
and get medical help immediately.
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