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M A I N T A I N I N G Y O U R V E H I C L E
MAINTENANCE SCHEDULE — 6.7L CUMMINS DIESEL ENGINE
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 — Cummins® Diesel
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) or Driver Infor-
mation Display (DID). The oil change reminder will remind the owner to change
the engine oil every 15,000 miles (24,000 km) or 500 hours, whichever comes
first, except for the Chassis Cab models that are using B20 biodiesel, which are
12,500 miles (20,000 km) or 400 hours, whichever comes first. Failure to change
the engine oil per the maintenance schedule can result in internal engine damage.
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CAUTION!
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