FUEL QUALITY
Choosing the Right Fuel
Your vehicle is designed to operate onregular unleaded gasoline with a minimumpump (R+M)/2 octane rating of 87.
Some fuel stations, particularly those in highaltitude areas, offer fuels posted as regularunleaded gasoline with an octane ratingbelow 87. The use of these fuels could resultin engine damage that will not be coveredby the vehicle warranty.
For best overall vehicle and engineperformance, premium fuel with an octanerating of 91 or higher is recommended. Theperformance gained by using premium fuelis most noticeable in hot weather as well asother conditions, for example when towinga trailer. See Towing (page 297).
Do not be concerned if the enginesometimes knocks lightly. However, if theengine knocks heavily while using fuel withthe recommended octane rating, contact anauthorized dealer to prevent any enginedamage.
We recommend Top Tier detergentgasolines, where available to help minimizeengine deposits and maintain optimal vehicleand engine performance. For additionalinformation, refer to www.toptiergas.com.
Note:Use of any fuel for which the vehiclewas not designed can impair the emissioncontrol system, cause loss of vehicleperformance, and cause damage to theengine which may not be covered by thevehicle Warranty.
Do not use:
•Diesel fuel.
•Fuels containing kerosene or paraffin.
•Fuel containing more than 15% ethanolor E85 fuel.
•Fuels containing methanol.
•Fuels containing metallic-based additives,including manganese-based compounds.
•Fuels containing the octane boosteradditive, methylcyclopentadienylmanganese tricarbonyl (MMT).
•Leaded fuel, using leaded fuel isprohibited by law.
The use of fuels with metallic compoundssuch as methylcyclopentadienyl manganesetricarbonyl (commonly known as MMT), whichis a manganese-based fuel additive, willimpair engine performance and affect theemission control system.
FUEL FILLER FUNNEL LOCATION
The fuel filler funnel is in the spare wheelstorage tray.
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•An open or pinched sensor hose.
•Incorrect engine oil level.
•Incorrect fuel for climatic conditions.
•Incorrect engine oil viscosity for climacticconditions.
Note:Some vehicles have a lifetime fuel filterthat is integrated with the fuel tank. Regularmaintenance or replacement is not needed.
Note:If these checks do not help you correctthe concern, have your vehicle checked assoon as possible.
Noise Emissions Warranty, ProhibitedTampering Acts and Maintenance
On January 1, 1978, Federal regulationbecame effective governing the noiseemission on trucks over 10,000 lb (4,536 kg)Gross Vehicle Weight Rating (GVWR). Thepreceding statements concerning prohibitedtampering acts and maintenance, and thenoise warranty found in the Warranty Guide,are applicable to complete chassis cabs over10,000 lb (4,536 kg) GVWR.
CATALYTIC CONVERTER
WARNING: Do not park, idle or driveyour vehicle on dry grass or other dryground cover. The emission system heatsup the engine compartment and exhaustsystem, creating the risk of fire.
WARNING: The normal operatingtemperature of the exhaust system is veryhigh. Never work around or attempt torepair any part of the exhaust system untilit has cooled. Use special care whenworking around the catalytic converter.The catalytic converter heats up to a veryhigh temperature after only a short periodof engine operation and stays hot after theengine is switched off.
WARNING: Exhaust leaks may resultin entry of harmful and potentially lethalfumes into the passenger compartment. Ifyou smell exhaust fumes inside yourvehicle, have your vehicle inspectedimmediately. Do not drive if you smellexhaust fumes.
Your vehicle has various emission controlcomponents and a catalytic converter thatenables it to comply with applicable exhaustemission standards.
To make sure that the catalytic converter andother emission control components continueto work properly:
•Do not crank the engine for more than10 seconds at a time.
•Do not run the engine with a spark pluglead disconnected.
•Do not push-start or tow-start yourvehicle. Use booster cables. See JumpStarting the Vehicle (page 328).
•Use only the specified fuel listed.
•Do not switch the ignition off when yourvehicle is moving.
•Avoid running out of fuel.
•Have the items listed in scheduledmaintenance information performedaccording to the specified schedule.
Note:Resulting component damage maynot be covered by the vehicle Warranty.
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Engine Emission Control
AUTOMATIC TRANSMISSION
WARNING: Always fully apply theparking brake and make sure you shift intopark (P). Failure to follow this instructioncould result in personal injury or death.
WARNING: Do not use tow/haulwhen the road surface is slippery. Failureto follow this instruction could result in theloss of control of your vehicle.
WARNING: When your vehicle isstationary, keep the brake pedal fullypressed when shifting gears. Failure tofollow this instruction could result inpersonal injury, death or property damage.
Note:You may not be able to shift out ofpark (P) unless the intelligent access key isinside your vehicle.
Understanding the Shift Positions ofyour Automatic Transmission
Putting your vehicle in or out of gear:
1. Fully press down on the brake pedal.
2. Press the desired gear on thetransmission selector.
3. When you are finished driving, come toa complete stop.
4. Press the park (P) button on thetransmission selector.
The instrument cluster displays the currentgear.
Park (P)
With the transmission in park (P), your vehiclelocks the transmission and prevents thewheels from turning. Always come to acomplete stop before putting your vehicleinto and out of park (P). An audible tonesounds once you select park (P).
When the ignition is turned off, your vehicleautomatically shift into park (P). If the ignitionis turned off when the vehicle is moving, itfirst shifts into neutral (N) until the vehicle isstopped and then shift into park (P)automatically.
The electric parking brake may apply whenyou shift to park (P) without the brake pedalfully pressed. The electric parking brakeapplies when you shift to park (P) on largeslopes. The electric parking brake releaseswith the drive away release function ormanually as described in the Releasing theElectric Parking Brake section. See ElectricParking Brake (page 226).
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Automatic Return to Park
Note:This feature does not operate whenyour vehicle is in Stay in Neutral mode orneutral tow.
Your vehicle has a feature that automaticallyshifts your vehicle into park (P) when any ofthe following conditions occur:
•You turn the vehicle off.
•You open the driver's door with yourseatbelt unlatched with the vehiclestopped.
•You unlatch your seatbelt when thedriver's door is open with the vehiclestopped.
If you turn your vehicle off when moving,your vehicle first shifts into neutral (N) untilit stops and then shift into park (P)automatically.
Note:If you have waited an extended periodof time, 2-15 minutes before starting yourvehicle, unlatching your seatbelt can causethis feature to activate, even with the driverdoor closed.
Note:This feature may not work properly ifthe door ajar switch is malfunctioning. If yourdoor ajar indicator does not illuminate whenyou open the driver’s door or the indicatorilluminates with the driver’s door closed, seeyour authorized dealer.
Reverse (R)
With the selector in reverse (R), your vehiclemoves backward. Always come to acomplete stop before shifting into and outof reverse (R).
Neutral (N)
With the selector in neutral (N), your vehiclecan be started and is free to roll. Hold thebrake pedal down when in this position.
Stay in Neutral Mode
Note:Stay in neutral mode is a temporaryvehicle state with the ignition off. Once inthis mode, sufficient battery voltage must bemaintained or your vehicle returns to park.Extended usage of Stay in Neutral modemay result in a battery voltage reduction toa level where the vehicle may no longerstart. Do not tow your vehicle in this mode.
Note:Always put your vehicle in Stay inNeutral mode when entering an automaticcar wash. Failure to do this could result invehicle damage not covered by warranty.
Stay in Neutral mode allows your vehicle tostay in neutral when you exit your vehicle.Your vehicle must be stationary to enter thismode.
To enter Stay in Neutral mode:
•Press the neutral (N) button on thetransmission selector.
•Press the neutral (N) button again toenter Stay in Neutral mode.
A message appears in your informationdisplay screen when your vehicle hasentered Stay in Neutral mode.
To exit Stay in Neutral mode, apply the brakeand select a different gear.
Stay in Neutral Mode - No Start
Use this to move your transmission from thepark position in the event of a no startsituation. If your vehicle has a dead battery,an external power source is required. Do nottow your vehicle in this mode.
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Transmission
Note:This only functions if your 12-voltbattery has power and the starter can spinthe engine. If vehicle battery voltage is notsufficient, an external 12-volt power sourcesuch as jumper cables, battery charger orjump pack may be required for this featureto function.
Note:Once in this mode, sufficient batteryvoltage must be maintained or your vehiclereturns to park.
WARNING: When doing thisprocedure, you need to take thetransmission out of park (P) which meansyour vehicle can roll freely. To avoidunwanted vehicle movement, always fullyapply the parking brake prior to doing thisprocedure. Use wheels chocks ifappropriate.
1. Do not press the brake pedal. Press theSTART/STOP button.
2. Fully press down on the brake pedal.Keep the brakes applied through step 7.
3. Press the accelerator pedal to the floorand hold through step 7.
4. Press the neutral (N) button on thetransmission selector.
5. Press the neutral (N) button again toenter Stay in Neutral mode.
6. Press and release the push to startbutton, the transmission needs aminimum of 2 seconds to exit park.
7. When neutral (N) is displayed, the brakeand accelerator pedals can be released.
To exit Stay in Neutral mode, select adifferent gear.
A message appears in your informationdisplay screen when your vehicle hasentered Stay in Neutral mode.
Drive (D)
Drive (D) is the normal driving position forthe best fuel economy. The overdrivefunction allows automatic upshifts anddownshifts through gears one through ten.
Adaptive Tow/Haul Mode
WARNING: Do not use tow/haulwhen the road surface is slippery. Failureto follow this instruction could result in theloss of control of your vehicle.
Adaptive tow/haul has two modes, automaticthat is enabled by default and off.
To turn adaptive tow/haul off or on, use theinformation display controls. See GeneralInformation (page 120). The indicator lightilluminates in the instrument cluster.
Key adaptive tow/haul features:
•The system remains in the same mode,even after a key cycle.
•Is only available in normal drive modes(Normal 2H and Normal 4A).
The adaptive tow/haul feature improvestransmission operation when towing a traileror a heavy load. All transmission gear rangesare available when using adaptive tow/haul.
For information on towing. See Towing (page297).
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Transmission
SelectShift™ Automatic Transmission
Your vehicle is equipped with a SelectShiftAutomatic transmission. The SelectShiftAutomatic transmission gives you the abilityto change gears up or down, without aclutch, as desired.
In order to prevent the engine from runningat too low of an RPM, which may cause it tostall, SelectShift still automatically makessome downshifts if it has determined thatyou have not downshifted in time. AlthoughSelectShift makes some downshifts for you,it still allows you to downshift at any time aslong as the SelectShift determines thatdamage to the engine does not occur fromover-revving.
Note:Engine damage may occur if youmaintain excessive engine revving withoutshifting.
SelectShift does not automatically upshift,even if the engine is approaching the RPMlimit. It must be shifted manually by pressingthe + paddle.
Pull the + paddle on the steering wheel toactivate SelectShift.
•Pull the right paddle (+) to upshift.
•Pull the left paddle (–) to downshift.
SelectShift in drive (D):
Provides a temporary manual mode forperforming more demanding maneuverswhere extra control of gear selection isrequired (for example, when towing, downhilldriving or overtaking). This mode holds aselected gear for a temporary period of timedependent on driver inputs (for example,steering or accelerator pedal input).
In SelectShift mode, the instrument clusterdisplays your currently selected gear. If yourequest a gear, but it is not available due tovehicle conditions, low speed, too highengine speed for requested gear selection,the current gear briefly flashes.
Note:At full accelerator pedal travel, thetransmission downshifts for maximumperformance.
Note:In low traction conditions, you can pullaway in second gear using SelectShift. Toperform this operation, select drive (D) andpress the + paddle until 2 is displayed on thecluster. Your vehicle is now ready to movein 2nd gear.
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LIMITED SLIP DIFFERENTIAL (IF
EQUIPPED)
The Electronic Limited Slip Differential (eLSD)system directs torque, enabling the vehicleto drive over terrain and road conditions thata conventional axle cannot. The system isactive at all times and requires no input fromthe driver.
Note:If your vehicle is not at optimaloperating conditions or a system fault ispresent, a warning may be displayed in theinstrument cluster. Depending on thewarning, your vehicle may need to beserviced. You can find more informationregarding the system information messagesin the Information Displays chapter. SeeInformation Messages (page 125).
Spare Tire
If your vehicle has an Electronic Limited SlipDifferential, do not use a spare tire of adifferent size than the tire provided. If a sparetire is installed, a message may appear,indicating the system has disabledautomatically or reduced function to prevent
system overheat and damage. It isrecommended to reinstall the repaired orreplaced road tire as soon as possible. Whenthe road tire is replaced, the system willresume normal operation on the next keycycle.
Trailer Towing
The Electronic Limited Slip Differentialenhances vehicle stability during trailer towoperation. During high demand traileringevents, such as steep slopes, high speedsor with a spare tire, the system may providea warning in the instrument cluster andreduce function or enter a temporarilydisabled state. To resume normal function,stop the vehicle in a safe location and allowthe unit to adequately cool. Once the systemhas reached normal operating temperatures,system function will be restored and theElectronic Limited Slip Differential Restoredmessage will be displayed.
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Rear Axle
GENERAL INFORMATION
Note: Occasional brake noise is normal. Ifa metal-to-metal, continuous grinding orcontinuous squeal sound is present, thebrake linings may be worn-out and anauthorized dealer should check them. If thevehicle has continuous vibration or shudderin the steering wheel while braking, anauthorized dealer should check your vehicle.
Note:Brake dust may accumulate on thewheels, even under normal drivingconditions. Some dust is inevitable as thebrakes wear and does not contribute tobrake noise. See Cleaning the Wheels(page 385).
See Warning Lamps andIndicators (page 114).
Wet brakes result in reduced brakingefficiency. Gently press the brake pedal afew times when driving from a car wash orstanding water to dry the brakes.
Brake Over Accelerator
In the event the accelerator pedal becomesstuck or entrapped, apply steady and firmpressure to the brake pedal to slow thevehicle and reduce engine power. If youexperience this condition, apply the brakesand bring your vehicle to a safe stop. Switchthe engine off, move the transmission to park(P) and apply the parking brake. Inspect theaccelerator pedal and the area around it forany items or debris that may be obstructingits movement.If none are found and thecondition persists, have your vehicle towedto the nearest authorized dealer.
Emergency Brake Assist
Emergency brake assist detects when youbrake heavily by measuring the rate at whichyou press the brake pedal. It providesmaximum braking efficiency as long as youpress the pedal. Emergency brake assistcan reduce stopping distances in criticalsituations.
Anti-lock Brake System
This system helps you maintain steeringcontrol during emergency stops by keepingthe brakes from locking.
This lamp momentarily illuminateswhen you switch the ignition on. Ifthe light does not illuminate duringstart up, remains on or flashes, the anti-lockbraking system may be disabled. Have thesystem checked by an authorized dealer. Ifthe anti-lock brake system is disabled,normal braking is still effective.
If the brake warning lampilluminates with the parking brakereleased, have your brake systemserviced immediately.
It also illuminates momentarily when youswitch the ignition on to confirm the lamp isfunctional. If it does not illuminate when youswitch the ignition on, or begins to flash atany time, have the system checked by anauthorized dealer.
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