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MAINTENANCE SCHEDULE — 6.7L CUMMINS DIESEL ENGINE
CAUTION!
Failure to perform the required maintenance items may result in damage to the
vehicle.
At Each Stop For Fuel
Check the engine oil level at least 30 minutes after a fully warmed engine is shut off.
Checking the oil level while the vehicle is on level ground will improve the accuracy
of the oil level reading. Add oil only when the level is at or below the ADD or MIN
mark.
Once A Month
• Inspect the batteries, and clean and tighten the terminals as required.
• Check the fluid levels of the coolant reservoir, brake master cylinder, and
automatic transmission (if equipped), and add as needed.
At Each Oil Change
• Change the engine oil filter.
• Inspect the exhaust system.
• Inspect engine air filter.
• Check the coolant level, hoses, and clamps.
• Lubricate outer tie rod ends.
Inspection and service should also be performed anytime a malfunction is observed
or suspected. Retain all receipts.
Oil Change Indicator System
Your vehicle is equipped with an engine oil change indicator system. This system will
alert you when it is time to change your engine oil by displaying the words “Oil
Change Due” on your Electronic Vehicle Information Center (EVIC). The engine oil
change indicator system is duty cycle based, which means the engine oil change
interval may fluctuate depending on your personal driving style. Driving styles such
as frequent stop and go type driving or extended idle time can increase the frequency
of the engine oil change. This is the result of more frequent regeneration of the
exhaust after treatment system, which can decrease the life of the engine oil. Failure
to change the engine oil per the maintenance schedule can result in internal engine
damage.
For information on resetting the Oil Change Indicator message, refer to “Oil Change
Due” under “Electronic Vehicle Information Center (EVIC)/EVIC Warning Lights” in
“Understanding Your Instrument Panel” for further information.
MAINTAINING YOUR VEHICLE
180
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