Transmission Temperature
Press the trip/fuel button until TRANS TEMP displays.This display shows the temperature of the automatictransmission fluid in either degrees Fahrenheit (°F) ordegrees Celsius (°C).
Instantaneous Economy
If your vehicle has this display, press the trip/fuel buttonuntil INST ECON displays. This display shows thecurrent fuel economy at a particular moment and willchange frequently as driving conditions change. Thisdisplay shows the instantaneous fuel economy in milesper gallon (mpg) or liters per 100 kilometers (L/100 km).Unlike average economy, this screen cannot be reset.
The display may also show if the vehicle is currentlyin V4, V6 or V8 mode.
Average Vehicle Speed
Press the trip/fuel button until AVERAGE SPEEDdisplays. This display shows the average speed inmiles per hour (MPH) or kilometers per hour (km/h).
Blank Display
This display shows no information.
Vehicle Information Menu Items
T(Vehicle Information):Press this button to scrollthrough the following menu items:
Oil Life
Press the vehicle information button until OIL LIFEREMAINING displays. This display shows an estimateof the oil's remaining useful life. If you see 99% OILLIFE REMAINING on the display, that means 99% ofthe current oil life remains. The engine oil life systemwill alert you to change the oil on a schedule consistentwith your driving conditions.
When the remaining oil life is low, the CHANGEENGINE OIL SOON message will appear on thedisplay. See“CHANGE ENGINE OIL SOON”underDICWarnings and Messageson page 4!48. You shouldchange the oil as soon as you can. SeeEngine Oilonpage 7!17. In addition to the engine oil life systemmonitoring the oil life, additional maintenance isrecommended in the Maintenance Schedule in thismanual. SeeScheduled Maintenanceo n p a g e 8!3formore information.
4-44
TRANSMISSION HOT IDLE ENGINE
Notice:If you drive your vehicle while thetransmission fluid is overheating and thetransmission temperature warning is displayed onthe instrument panel cluster and/or DIC, you candamage the transmission. This could lead to costlyrepairs that would not be covered by your warranty.Do not drive your vehicle with overheatedtransmission fluid or while the transmissiontemperature warning is displayed.
This message displays along with four chimes if thetransmission fluid in the vehicle gets hot. Driving withthe transmission fluid temperature high can causedamage to the vehicle. Stop the vehicle and let it idle toallow the transmission to cool. This message clears andthe chime stops when the fluid temperature reaches asafe level.
TURN SIGNAL ON
This message displays and a chime sounds if a turnsignal is left on for 3/4 of a mile (1.2 km). Move the turnsignal/multifunction lever to the off position.
WASHER FLUID LOW ADD FLUID
This message displays when the windshield washerfluid is low. Fill the windshield washer fluid reservoir assoon as possible. SeeEngine Compartment Overviewon page 7!16for the location of the windshield washerfluid reservoir. Also, seeWindshield Washer Fluidonpage 7!39for more information.
DIC Vehicle Customization
Your vehicle may have customization capabilities thatallow you to program certain features to one preferredsetting. Customization features can only beprogrammed to one setting on the vehicle and cannotbe programmed to a preferred setting for two differentdrivers.
All of the customization options may not be available onyour vehicle. Only the options available will bedisplayed on the DIC.
The default settings for the customization features wereset when your vehicle left the factory, but may havebeen changed from their default state since then.
The customization preferences are automaticallyrecalled.
To change customization preferences, use the followingprocedure.
4-57
It is recommended to leave the system on for normaldriving conditions, but it may be necessary to turn thesystem off if the vehicle is stuck in sand, mud, ice orsnow, and you want to“rock”the vehicle to attempt tofree it. It may also be necessary to turn off the systemwhen driving in extreme off-road conditions where highwheel spin is required. SeeIf Your Vehicle is Stuck inSand, Mud, Ice, or Snow on page 6!30.
Traction Control Operation
The traction control system is part of the StabiliTraksystem. Traction control limits wheel spin by reducingengine power to the wheels (engine speedmanagement) and by applying brakes to each individualwheel (brake-traction control) as necessary.
The traction control system is enabled automaticallywhen the vehicle is started. It will activate and theStabiliTrak light will flash if it senses that any of thewheels are spinning or beginning to lose tractionwhile driving. If traction control is turned off, only thebrake-traction control portion of traction control willwork. The engine speed management will be disabled.In this mode, engine power is not reduced automaticallyand the driven wheels can spin more freely. This cancause the brake-traction control to activate constantly.
Notice:If the wheel(s) of one axle is allowed to spinexcessively while the StabiliTrak, ABS and brakewarning lights and any relevant DIC messages aredisplayed, the transfer case could be damaged.The repairs would not be covered by the vehiclewarranty. Reduce engine power and do not spin thewheel(s) excessively while these lights andmessages are displayed.
The traction control system may activate on dry orrough roads or under conditions such as heavyacceleration while turning or abrupt upshifts/downshiftsof the transmission. When this happens, a reduction inacceleration may be noticed, or a noise or vibration maybe heard. This is normal.
If cruise control is being used when the systemactivates, the StabiliTrak light will flash and cruisecontrol will automatically disengage. Cruise control maybe reengaged when road conditions allow. SeeCruiseControl on page 4!8.
StabiliTrak may also turn off automatically if itdetermines that a problem exists with the system.If the problem does not clear itself after restarting thevehicle, see your dealer/retailer for service.
6-8
Two-wheel-drive vehicles should not be towed withthe rear wheels on the ground. Two-wheel-drivetransmissions have no provisions for internal lubricationwhile being towed.
Dolly Towing (Rear Wheels Off the Ground)
Use the following procedure to dinghy tow atwo-wheel-drive vehicle from the rear:
1. Attach the dolly to the tow vehicle following thedolly manufacturer's instructions.
2. Drive the rear wheels onto the dolly.
3. Firmly set the parking brake. SeeParking Brakeon page 3!38.
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly following themanufacturer's instructions.
6. Use an adequate clamping device designed fortowing to ensure that the front wheels are lockedinto the straight position.
7. Turn the ignition to LOCK/OFF.
Level Control
Automatic Level Control
The automatic level control rear suspension is availableon light!duty vehicles and comes as a part of theAutoride®suspension, if equipped.
This type of level control is fully automatic and willprovide a better leveled riding position as well as betterhandling under a variety of passenger and loadingconditions. An air compressor connected to the rearshocks will raise or lower the rear of the vehicle tomaintain proper vehicle height. The system is activatedwhen the ignition key is turned to ON/RUN and willautomatically adjust vehicle height thereafter. Thesystem may exhaust (lower vehicle height) for up toten minutes after the ignition key has been turned off.You may hear the air compressor operating when theheight is being adjusted.
6-41
Driving On Grades
Reduce speed and shift to a lower gearbeforestartingdown a long or steep downgrade. If the transmission isnot shifted down, the brakes might get hot and nolonger work well.
Vehicles can tow in D (Drive). Shift the transmission toa lower gear if the transmission shifts too often underheavy loads and/or hilly conditions.
The tow/haul mode may be used if the transmissionshifts too often. SeeTow/Haul Mode on page 3!36.
When towing at high altitude on steep uphill grades,consider the following: Engine coolant will boil at alower temperature than at normal altitudes. If the engineis turned off immediately after towing at high altitude onsteep uphill grades, the vehicle may show signs similarto engine overheating. To avoid this, let the engine runwhile parked, preferably on level ground, with theautomatic transmission in P (Park) for a few minutesbefore turning the engine off. If the overheat warningcomes on, seeEngine Overheating on page 7!34.
Parking on Hills
{WARNING:
Parking the vehicle on a hill with the trailer
attached can be dangerous. If something goes
wrong, the rig could start to move. People can be
injured, and both the vehicle and the trailer can be
damaged. When possible, always park the rig on
a flat surface.
If parking the rig on a hill:
1. Press the brake pedal, but do not shift intoP (Park) yet. Turn the wheels into the curb if facingdownhill or into traffic if facing uphill.
2. Have someone place chocks under the trailerwheels.
3. When the wheel chocks are in place, release theregular brakes until the chocks absorb the load.
6-52
4. Reapply the brake pedal. Then apply the parkingbrake and shift into P (Park).
5. Release the brake pedal.
{WARNING:
It can be dangerous to get out of the vehicle if the
shift lever is not fully in P (Park) with the parking
brake firmly set. The vehicle can roll.
If the engine has been left running, the vehicle
can move suddenly. You or others could be
injured. To be sure the vehicle will not move, even
when on fairly level ground, always put the shift
lever fully in P (Park) with the parking brake
firmly set.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
2. Start the engine
3. Shift into a gear
4. Release the parking brake
5. Let up on the brake pedal.
6. Drive slowly until the trailer is clear of the chocks.
7. Stop and have someone pick up and storethe chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling atrailer. See this manual's Maintenance Schedule orIndex for more information. Things that are especiallyimportant in trailer operation are automatic transmissionfluid, engine oil, axle lubricant, belts, cooling systemand brake system. It is a good idea to inspect thesebefore and during the trip.
Check periodically to see that all hitch nuts and boltsare tight.
6-53
Section 7 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4Accessories and Modifications . . . . . . . . . . . . . . . . . . 7-4California Proposition 65 Warning . . . . . . . . . . . . . . . 7-5California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 7-6Adding Equipment to the Outside of theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 7-8California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Fuel E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . 7-10Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11Filling a Portable Fuel Container . . . . . . . . . . . . . . . 7-13
Checking Things Under the Hood. . . . . . . . . . . . . . . 7-14Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15Engine Compartment Overview . . . . . . . . . . . . . . . . 7-16Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 7-20Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 7-22
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . 7-24Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34Overheated Engine ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Engine Fan Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 7-39Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44
All-Wheel Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
Rear Axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-50
Front Axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
Headlamp Aiming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
Bulb Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54High Intensity Discharge (HID) Lighting . . . . . . . . 7-54LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55License Plate Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56
7-1
A.Engine Air Cleaner/Filter on page 7!22.
B. Coolant Surge Tank and Pressure Cap.SeeCooling System on page 7!28.
C. Remote Positive (+) Terminal. SeeJump Startingon page 7!44.
D.Battery on page 7!43.
E. Engine Oil Fill Cap. See“When to Add Engine Oil”underEngine Oil on page 7!17.
F. Automatic Transmission Dipstick (Out of View).See“Checking the Fluid Level”underAutomaticTransmission Fluid on page 7!24.
G. Remote Negative (!) Terminal (GND) (Out ofView). SeeJump Starting on page 7!44.
H. Engine Oil Dipstick (Out of View). See“CheckingEngine Oil”underEngine Oil on page 7!17.
I. Engine Cooling Fan (Out of View). SeeCoolingSystem on page 7!28.
J. Power Steering Fluid Reservoir (Out of View).SeePower Steering Fluid on page 7!38.
K. Brake Master Cylinder Reservoir. See“BrakeFluid”underBrakes on page 7!40.
L.Underhood Fuse Block on page 7!111.
M. Windshield Washer Fluid Reservoir. See“AddingWasher Fluid”underWindshield Washer Fluidonpage 7!39.
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 Overviewon page 7!16for thelocation 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.
7-17