
Continued driving without refilling resultsin the following actions as required by theCalifornia Air Resources Board (CARB) andthe U.S. Environmental Protection Agency(EPA):
•Within a preset distance to empty,speed is limited upon vehicle restart.Prior to this occurring a messageappears in the information display.
•Further vehicle operation withoutrefilling the diesel exhaust fluid tankcauses the engine to enter an idle-onlycondition. This only occurs upon vehiclerefueling or at an extended idle. Amessage indicates the required actionsto resume normal operation. It isrequired to add a minimum of 1.0 gal(3.8 L) of diesel exhaust fluid to thetank to exit the idle-only condition, butyour vehicle is still in the speed-limitingmode until you refill the tankcompletely.
Note:For either vehicle speed limiting oridle-only condition, normal vehicle operationresumes when you refill the diesel exhaustfluid tank.
Note:When filling the diesel exhaust fluidtank from empty, there may be a short delaybefore detecting the increased level of fluid.The increased level detection must occurbefore your vehicle returns to full power.
Diesel Exhaust Fluid Guidelinesand Information
•Use only diesel exhaust fluid thatcarries the American PetroleumInstitute (API) certified diesel exhaustfluid trademark or ISO 22241.
•Do not put diesel exhaust fluid in thediesel fuel tank.
•Do not overfill the diesel exhaust fluidtank.
•Diesel exhaust fluid is corrosive.
•Do not re-use the diesel exhaust fluidcontainer once it is emptied.
•Avoid spilling diesel exhaust fluid onpainted surfaces, carpeting or plasticcomponents. Immediately wipe awayany diesel exhaust fluid that has spilledwith a damp cloth and water. If it hasalready crystallized, use warm waterand a sponge.
•Store diesel exhaust fluid out of directsunlight and in temperatures between23°F (-5°C) and 68°F (20°C).
•Diesel exhaust fluid freezes below 12°F(-11°C).
•Do not store the diesel exhaust fluidbottle in your vehicle. If it leaks it couldcause damage to interior componentsor release an ammonia odor inside yourvehicle.
•Diesel exhaust fluid is non-flammable,non-toxic, colorless and water-solubleliquid.
•The system has a diesel exhaust fluidquality sensor. Dilution of dieselexhaust fluid or use of any other liquidin the SCR system leads to a dieselexhaust fluid system fault, eventuallyleading to the vehicle only operating inidle-only mode.
•Do not dilute diesel exhaust fluid withwater or any other liquid.
•An ammonia odor may be smelledwhen the cap is removed or duringrefill. Refill diesel exhaust fluid in a wellventilated area.
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Fuel and Refueling

Forced downshifts
•Allowed in drive (D) with the tow/haulfeature on or off.
•Press the accelerator to the floor.
•Allows transmission to select anappropriate gear.
Tow/Haul Mode
WARNING
Do not use the tow/haul featurewhen driving in icy or slipperyconditions as the increased enginebraking can cause the rear wheels to slideand your vehicle to swing around with thepossible loss of vehicle control.
To activate tow/haul, press thebutton on the gearshift leveronce. The TOW HAUL indicatorlight illuminates in the instrument cluster.
The tow/haul feature:
•Delays upshifts to reduce the frequencyof transmission shifting.
•Provides engine braking in all forwardgears, which slows your vehicle andassists you in controlling your vehiclewhen descending a grade.
•Depending on driving conditions andload conditions, may downshift thetransmission, slow your vehicle andcontrol your vehicle speed whendescending a hill, without pressing theaccelerator pedal. The amount ofdownshift braking provided will varybased upon the amount you press thebrake pedal.
The tow/haul feature improvestransmission operation when towing atrailer or a heavy load. All transmissiongear ranges are available when usingtow/haul.
Note:If your vehicle is equipped with theAdaptive Steering System, enabling thetow/haul feature will adjust the steeringresponse. In tow/haul mode the AdaptiveSteering system reduces vehicle sensitivityto steering inputs at higher vehicle speedswhile maintaining the ease of parking andmaneuverability at low speeds. SeeSteering (page 256).
To deactivate the tow/haul feature andreturn to normal driving mode, press thebutton on the gearshift lever whentow/haul is active. The TOW HAUL lightdeactivates. Tow/haul also deactivateswhen you power down your vehicle.
Understanding your SelectShiftAutomatic™ transmission (If Equipped)
Your vehicle is equipped with a SelectShiftAutomatic™ transmission gearshift lever.The SelectShift Automatic transmissiongives you the ability to change gears up ordown (without a clutch) as desired.
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TransmissionE161509 E163184

In order to prevent the engine from runningat too low an RPM, which may cause it tostall, SelectShift will still automaticallymake some downshifts if it has determinedthat you have not downshifted in time.Although SelectShift will make somedownshifts for you, it will still allow you todownshift at any time as long as theSelectShift determines that damage willnot be caused to the engine fromover-revving.
SelectShift will not automatically upshift,even if the engine is approaching the RPMlimit. It must be shifted manually bypressing the + button.
Note:Engine damage may occur if youmaintain excessive engine revving withoutshifting.
The SelectShift Automatic transmissionfeature has two modes: PRS and M mode.
PRS (Progressive Range Selection)
Progressive Range Selection gives you theability to lockout gears from the automaticshifting range. This may provide you withan improved driving experience (forexample, in slippery conditions or whenexperiencing a steep grade).
With the gearshift lever in drive (D), pressthe – button to active PRS. The availableand selected gears are indicated on theinstrument cluster.
All available gears will display with thecurrent gear indicated. Press the – buttonagain to lock out gears beginning with thehighest gear. Example: press the – buttontwice to lock out 6th and 5th gears. Onlythe available gears will display and thetransmission will automatically shiftbetween the available gears. Press the +button to unlock gears to allow thetransmission to shift to higher gears. Thetransmission will shift automatically withinthe gear range you select.
Manual (M)
Moving the gearshift lever to the manual(M) position will allow you to manuallyselect the gear you desire. Only the currentgear will display. Use the buttons on thegearshift lever to manually select gears.Press the + button to upshift or the –button to downshift. Return thetransmission to a different gearshiftposition to deactivate manual control.
Recommended shift speeds
Upshift according to the following chart:
Upshifts when accelerating (recommended for best fuel economy)
Diesel enginesGasoline enginesShift from:
12 mph (19 km/h)15 mph (24 km/h)1 – 2
19 mph (31 km/h)25 mph (40 km/h)2 – 3
26 mph (42 km/h)40 mph (64 km/h)3 – 4
34 mph (55 km/h)45 mph (72 km/h)4 – 5
46 mph (74 km/h)50 mph (80 km/h)5 – 6
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Transmission

USING FOUR-WHEEL DRIVE
Note:For important information regardingthe safe operation of this type of vehicle,see General Information in the Wheels andTires chapter.
Note:Do not use 4H or 4L mode on dry,hard surfaced roads. Doing so can produceexcessive noise, increase tire wear and maydamage drive components. 4X4 mode isonly intended for consistently slippery orloose surfaces. Use of 4L mode on thesesurfaces may produce some noise (such asoccasional clunks), but will not damagedrive components.
Note:If 4X4 low is selected while thevehicle is moving above 3 mph (5 km/h),the 4WD system will not perform a shift.This is normal and should be no reason forconcern. Refer to Shifting to or from 4L (4X4Low) for proper operation.
Note:You can switch on and switch off theelectronic locking differential by pulling the4WD control (4WD vehicles) or turning theelectronic locking differential control (2WDvehicles). See Electronic LockingDifferential (page 219).
Manual Shift On Stop (MSOS)4WD system (If Equipped)
Note:The vehicle should not be driven in4X4 High or 4X4 Low modes with the hublocks set to FREE as this condition maydamage driveline system components.
The 4WD system is engaged or disengagedby rotating the control for both front wheelhub locks from the FREE or LOCK position,then manually engaging or disengaging thetransfer case with the floor-mountedshifter. For increased fuel economy in 2WD,rotate both hub locks to the FREE position.
Electronic Shift-On-the-Fly(ESOF) 4WD system (If Equipped)
Note:If 4X4 Low is selected while thevehicle is moving above 3 mph (5 km/h),the 4WD system will not perform a shift.This is normal and should be no reason forconcern. Refer to Shifting to or from 4L (4X4Low) for proper system operation.
Note:Auto-manual hub locks can bemanually overridden by rotating the hub lockcontrol from AUTO to LOCK.
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Four-Wheel Drive (If Equipped)LOC K
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E163187 LOC K
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For proper operation, make sure that eachhub is fully engaged and that both hublocks are set to the same position (bothset to LOCK or both set to AUTO). Toengage LOCK, turn the hub lockscompletely clockwise; to engage AUTO,turn the hub locks completelycounterclockwise.
The ESOF 4WD system:
•provides 4x4 High engagement anddisengagement while the vehicle ismoving.
•is operated by a rotary control locatedon the instrument panel that allowsyou select 4x2, 4x4 High or 4x4 Lowoperation.
•uses auto-manual hub locks that canbe engaged and disengagedautomatically based on the 4x4 modeselected.
•will increase fuel economy when usedin the hub lock's recommended AUTOmode.
4WD Indicator Lights
Note:When a 4X4 system fault is present,the system will typically remain in whichever4X4 mode was selected prior to the faultcondition occurring. It will not default to 4X2in all circumstances. When this warning isdisplayed, have your vehicle serviced by anauthorized dealer.
4X2
Momentarily illuminates when2H is selected.
4X4 HIGH
Continuously illuminates when4H is selected.
4X4 LOW
Continuously illuminates when4L is selected.
CHECK 4X4
Displays when a 4X4 fault ispresent.
Using a Manual Shift On Stop(MSOS) 4WD system (If Equipped)
Note:High shift efforts may be encounteredwhen attempting to shift into and out of 4x4modes. It is recommended to allow thevehicle to roll at a speed below 3 mph(5 km/h) when shifting between modes.
2H (4X2)
For general on-road driving. Sends powerto the rear wheels only and should be usedfor street and highway driving. Providesoptimal smoothness and fuel economy athigh speeds
4H (4X4 High)
Used for extra traction such as in snow oricy roads or in off road situations. Thismode is not intended for use on drypavement.
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Four-Wheel Drive (If Equipped)E163173 E181779 E181780 E233846

N (Neutral)
Only used when towing the vehicle. Nopower to front or rear wheels.
4L (4X4 Low)
Uses extra gearing to provide maximumpower to all four wheels at reducedspeeds. Intended only for off roadapplications such as deep sand, steepgrades or pulling heavy objects.
Shifting between system modes
Note:Do not perform these operations ifthe rear wheels are slipping or whenapplying the accelerator pedal.
Note:Some noise may be heard as the 4x4system shifts or engages. This is normal. Inorder to reduce engagement noise, it isrecommended that all shifts be performedat speeds below3 mph (5 km/h).
Note:The vehicle should not be driven in4X4 High with the hub locks disengaged asthis condition may damage driveline systemcomponents.
Engage the locking hubs by rotating thehub lock control from FREE to LOCK, thenmove the transfer case lever from 2H to4H at a stop or a vehicle speed below3 mph (5 km/h).
Move the transfer case lever from 4H to2H at a stop or a vehicle speed below3 mph (5 km/h), then disengage thelocking hubs (optional) by rotating the hublock control from LOCK to FREE.
For proper operation, make sure that bothhubs are set to either FREE or LOCK.
Shifting to or from 4L (4X4 Low)
1. Bring the vehicle to a stop or a speedbelow 3 mph (5 km/h).
2. Place the transmission in N (Neutral).
3. Move the transfer case shift leverthrough N (Neutral) directly to thedesired position.
4. If the transfer case does not, or onlypartially moves to the desired position,perform a shift with the transmissionin N (Neutral) and the vehicle rolling ata speed below 3 mph (5 km/h).
5. If shifting to 2H with the vehicle at acomplete stop, disengage the lockinghubs (optional) by rotating the hublock control from LOCK to FREE.
Using the N (Neutral) position
WARNING
Always set the parking brake andleave your vehicle with thetransmission in park (P).
The transfer case neutral position overridesthe transmission and puts the vehicle inneutral regardless of transmission gearshiftlever position. The vehicle can moveforward or backwards.
This position should only be used whentowing the vehicle.
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Four-Wheel Drive (If Equipped)E233846

Using the Electronic Shift on theFly 4WD system (If Equipped)
2H (4X2)
For general on-road driving. Sends powerto the rear wheels only and should be usedfor street and highway driving. Providesoptimal smoothness and fuel economy athigh speeds.
4H (4X4 HIGH)
Provides mechanically locked four-wheeldrive power to both the front and rearwheels for use in off-road or winterconditions such as deep snow, sand ormud. This mode is not for use on drypavement.
4L (4X4 LOW)
Provides mechanically locked four-wheeldrive power to both the front and rearwheels for use on low traction surfaces,but does so with additional gearing forincreased torque multiplication. Intendedonly for off-road applications such as deepsand, steep grades, or pulling heavyobjects. 4L (4X4 low) will not engage whileyour vehicle is moving above 3 mph(5 km/h); this is normal and should be noreason for concern. Refer to Shifting to orfrom 4L (4X4 low) for proper operation.
Shifting between system modes
Note:Momentarily releasing the acceleratorpedal when a shift in progress messagedisplays improves engagement ordisengagement performance.
Note:Do not perform this operation if therear wheels are slipping or when applyingthe accelerator pedal.
Note:Some noise may be heard as thesystem shifts or engages; this is normal.
Note:4X4 high mode is not intended foruse on dry pavement.
You can move the control from 2H or 4Hat a stop or while driving. The informationdisplay may display a message indicatinga 4X4 shift is in progress. Once the shift iscomplete the message center will thendisplay the system mode selected.
Shifting to or from 4L (4X4 low)
Note:Some noise may be heard as thesystem shifts or engages; this is normal.
Note:4x4 low mode is not intended for useon dry pavement.
1. Bring the vehicle to a speed of 3 mph(5 km/h) or less.
2. Place the transmission in N (Neutral).
3. Move the 4WD control to the desiredposition.
The information display will display amessage indicating a 4X4 shift is inprogress. The information display will thendisplay the system mode selected. If anyof the above shift conditions are not met,the shift will not occur and the informationdisplay will display information guiding thedriver through the proper shiftingprocedures.
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Four-Wheel Drive (If Equipped)E191851

If Shift Delayed Pull Forward appears inthe information display, transfer case geartooth blockage is present. To alleviate thiscondition, place the transmission in aforward gear, move the vehicle forwardapproximately 5 ft (1.5 m), and shift thetransmission back to neutral to allow thetransfer case to complete the range shift.
How Your Vehicle Differs FromOther Vehicles
WARNING
Vehicles with a higher center ofgravity (utility and four-wheel drivevehicles) handle differently thanvehicles with a lower center of gravity(passenger cars). Avoid sharp turns,excessive speed and abrupt steering inthese vehicles. Failure to drive cautiouslyincreases the risk of losing control of yourvehicle, vehicle rollover, personal injury anddeath.
Truck and utility vehicles can differ fromsome other vehicles. Your vehicle may behigher to allow it to travel over roughterrain without getting hung up ordamaging underbody components.
The differences that make your vehicle soversatile also make it handle differentlythan an ordinary passenger car.
Maintain steering wheel control at alltimes, especially in rough terrain. Sincesudden changes in terrain can result inabrupt steering wheel motion, make sureyou grip the steering wheel from theoutside. Do not grip the spokes.
Drive cautiously to avoid vehicle damagefrom concealed objects such as rocks andstumps.
You should either know the terrain orexamine maps of the area before driving.Map out your route before driving in thearea. To maintain steering and brakingcontrol of your vehicle, you must have allfour wheels on the ground and they mustbe rolling, not sliding or spinning.
Driving Off-Road With Truck andUtility Vehicles
Note:On some models, the initial shift fromtwo-wheel drive to four-wheel drive whilethe vehicle is moving can cause somemomentary clunk and ratcheting sounds.This is the front drivetrain coming up tospeed and the automatic locking hubsengaging and is not cause for concern.
Note:Your vehicle may be equipped witha front air dam that can become damaged(due to reduced ground clearance) whentaking your vehicle off-road. This air damcan be taken off by removing 15 bolts.
Four-wheel drive vehicles are speciallyequipped for driving on sand, snow, mudand rough terrain and have operatingcharacteristics that are somewhatdifferent from conventional vehicles, bothon and off the road.
Power is supplied to all four wheelsthrough a transfer case. On four-wheeldrive vehicles, the transfer case allows youto select 4WD when necessary.Information on transfer case operation andshifting procedures can be found in thischapter. Information on transfer casemaintenance can be found in theMaintenance chapter. You should becomethoroughly familiar with this informationbefore you operate your vehicle.
Four-wheel drive (when you select a 4WDmode) uses all four wheels to power thevehicle. This increases traction, enablingyou to drive over terrain and roadconditions that a conventional two-wheeldrive vehicle cannot.
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Four-Wheel Drive (If Equipped)