
GENERAL MAINTENANCE
INFORMATION - DIESEL
Why Maintain Your Vehicle?
Carefully following the maintenanceschedule helps protect against major repairexpenses resulting from neglect orinadequate maintenance and may help toincrease the value of your vehicle whenyou sell or trade it. Keep all receipts forcompleted maintenance with your vehicle.
It is important that you have your vehicleserviced at the proper times. Theseintervals serve two purposes: first is tomaintain the reliability of your vehicle andthe second is to keep the cost of owningyour vehicle down.
It is your responsibility to have allscheduled maintenance performed and tomake sure that the materials used meetthe specifications identified in this owner'smanual. See Capacities andSpecifications (page 520).
Failure to perform scheduled maintenanceand regularly inspect your vehicle mayresult in vehicle damage not covered bythe vehicle Warranty.
Why Maintain Your Vehicle at YourDealership?
Our Genuine Replacement Parts
Dealerships stock our parts and ourauthorized branded remanufacturedreplacement parts. These parts meet orexceed our specifications. Parts installedat your dealership carry a nationwide24-month or unlimited mile (kilometer)parts and labor limited warranty.
If you do not use our authorized parts, theymay not meet our specifications and couldaffect emissions compliance.
Protecting Your Investment
Maintenance is an investment that paysdividends in the form of improvedreliability, durability and resale value. Tomaintain the proper performance of yourvehicle and its emission control systems,make sure you have scheduledmaintenance performed at the designatedintervals.
Your vehicle comes with the IntelligentOil-Life Monitor system, a messageappears in the information display at theproper oil change interval. This intervalmay be up to one year or 15,000 mi(24,000 km) for the 6.7L Diesel.
When the oil change message appears inthe information display, it is time for an oilchange. Make sure you perform the oilchange within two weeks or 500 mi(800 km) of the message appearing. Makesure to reset the Intelligent Oil-Life Monitorafter each oil change. See NormalScheduled Maintenance (page 597).
If your information display resetsprematurely or becomes inoperative, youshould perform the oil change interval atsix months or 5,000 mi (8,000 km) fromyour last oil change. Never exceed one yearor 15,000 mi (24,000 km) between oilchange intervals.
You can drive high performance vehiclesin such a way that may lead to higher oilconsumption including extended time athigh engine speeds, high loads, enginebraking, hard cornering maneuvers, trackand off-road usage. Under theseconditions, oil consumption ofapproximately 1 quart per 500 miles (1 literper 800 km) is possible. Check the engineoil level at every refueling and adjust tomaintain proper levels to avoid enginedamage.
It is important to rely upon your dealershipto properly diagnose and repair yourvehicle.
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If your instrument cluster display resetsprematurely or becomes inoperative, youshould perform the oil change interval atsix months or 5,000 mi (8,000 km) fromyour last oil change. Never exceed one yearor 10,000 mi (16,000 km) between oilchange intervals.
You can drive your vehicle in such a waythat may lead to higher oil consumptionincluding extended time at high enginespeeds, high loads, engine braking, hardcornering maneuvers, track and off-roadusage. Under these conditions, oilconsumption of approximately 1 quart per500 miles (1 liter per 800 km) is possible.Check the engine oil level at every refuelingand adjust to maintain proper levels toavoid engine damage.
You can also drive your vehicle in such away that dilutes and increases the level ofoil by frequent short trips that do not allowthe engine to get to operating temperature,extended idling and low speed driving forlong periods of time.
It is important to rely upon your dealershipto properly diagnose and repair yourvehicle.
We strongly recommend only using ourgenuine or our authorized re-manufacturedreplacement parts engineered for yourvehicle.
Additives and Chemicals
We do not recommend using chemicals oradditives not approved by us as part ofyour vehicle’s normal maintenance. Pleaseconsult your warranty information.
Oils, Fluids and Flushing
In many cases, fluid discoloration is anormal operating characteristic and, byitself, does not necessarily indicate aconcern or that the fluid needs to bechanged. Have discolored fluids that alsoshow signs of overheating or foreignmaterial contamination checkedimmediately.
Make sure to change the vehicle’s oils andfluids at the specified intervals or inconjunction with a repair. Flushing is aviable way to change fluid for many vehiclesub-systems during scheduledmaintenance. It is critical that systems areflushed only with new fluid that is the sameas that required to fill and operate thesystem or using our approved flushingchemical.
Owner Checks and Services
Make sure you perform the following basicmaintenance checks and inspections.
Check Every Month
The air filter restriction gauge.1
The engine oil level.
Function of all interior and the exterior lights.
The tires including the spare for wear and proper pressure.
The windshield washer fluid level.
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Services even if Intelematics or a Supplierhas been advised of the possibility of suchdamages. You also acknowledge thatneither Intelematics nor any Supplierguarantees nor make any warranties thatrelate to the availability, accuracy orcompleteness of SUNA Products and/orServices, and to the extent which it islawful to do so, both Intelematics and eachSupplier excludes any warranties whichmight otherwise be implied by any Stateor Federal legislation in relation to SUNAProducts and/or Services.
7. Please Note
Great care has been taken in preparing thismanual. Constant product developmentmay mean that some information is notentirely up-to-date. The information in thisdocument is subject to change withoutnotice.
EMISSION LAW
WARNING: Do not remove or alterthe original equipment floor covering orinsulation between it and the metal floorof the vehicle. The floor covering andinsulation protect occupants of thevehicle from the engine and exhaustsystem heat and noise. On vehicles withno original equipment floor coveringinsulation, do not carry passengers in amanner that permits prolonged skincontact with the metal floor. Failure tofollow these instructions may result infire or personal injury.
U.S. federal laws and certain state lawsprohibit removing or rendering inoperativeemission control system components.Similar federal or provincial laws mayapply in Canada. We do not approve of anyvehicle modification without firstdetermining applicable laws.
Tampering with emissionscontrol systems includingrelated sensors or the DieselExhaust Fluid system can result in reducedengine power and the illumination of theservice engine soon light.
Tampering With a Noise ControlSystem
Federal laws prohibit the following acts:
•Removal or rendering inoperative byany person other than for purposes ofmaintenance.
•Repair or replacement of any device orelement of the design incorporated intoa new vehicle for the purpose of noisecontrol prior to its sale or delivery tothe ultimate purchaser or while it is inuse.
•The use of the vehicle after any personremoves or renders inoperative anydevice or element of the design.
The U.S. Environmental Protection Agencymay presume to constitute tampering asfollows:
•Removal of hood blanket, fender apronabsorbers, fender apron barriers,underbody noise shields or acousticallyabsorptive material.
•Tampering or rendering inoperative theengine speed governor, to allow enginespeed to exceed manufacturerspecifications.
If the engine does not start, runs rough,experiences a decrease in engineperformance, experiences excess fuelconsumption or produces excessiveexhaust smoke, check for the following:
•A plugged or disconnected air inletsystem hose.
•A plugged engine air filter element.
•Water in the fuel filter and waterseparator.
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