Tightening lug nuts
Tighten the lug nuts to the specified torque *
at 500 miles
(800 km) after any wheel disturbance (such as tire rota-
tion, changing a flat tire or wheel removal).
Single rear wheels
Tighten the wheel lug nuts to the specified torque *
at 100
miles (160 km), and again at 500 miles (800 km) of new vehicle operation and after any wheel disturbance (such as tire rotation, changing a flat tire or wheel removal).
Dual rear wheels
* See Technical Specifications (page 249).
Multi-point Inspection
In order to keep your vehicle running right,
it is important to have the systems on your
vehicle checked regularly. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great. Multi-point inspection
Horn operation
Accessory drive belt(s)
Radiator, cooler, heater and A/C hoses
Battery performance
Suspension component for leaks ordamage
Engine air filter
Steering and linkage
Exhaust system
Tires (including spare) for wear and properpressure**
Exterior lamps and hazard warning system
operation
Windshield for cracks, chips or pits
Fluid levels *
; fill if necessary
320
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
Every 15000 miles (24000 km) or 12 months (whichever comes first)
Inspect the automatic transmission fluid level. Consult an authorized dealer for
requirements.
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.
Inspect the engine cooling system strength and hoses.
Inspect the exhaust system and heat shields.
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.
Lubricate components equipped with grease fittings. Other maintenance items
Replace the engine air filter.
Every 30000 miles (48000
km)
Replace the front wheel bearing grease and grease seal
if equipped with non-sealed bearings.
Every 60000 miles (96000
km)
Replace the spark plugs.
Every 97500 miles (156000
km)
Change the engine coolant.*
Every 105000 miles
(168000 km) Change the rear axle fluid (Dana axles).
Inspect the accessory drive belt(s).
**
Change crankcase ventilation filter.
Change the automatic transmission fluid and filter. Consult
an authorized dealer for requirements.
Every 150000 miles
(240000 km) Change the rear axle fluid (non-Dana axles).
Replace the accessory drive belt(s) if not replaced within
the last 100000 miles (160000 km).
Replace the front wheel bearings and seals if equipped
with non-sealed bearings.
* Initial replacement at six years or 105000 miles (168000 kilometers), then every three
years or 45000 miles (72000 kilometers).
** If not replaced, inspect the belt(s) every 15000 miles (24000 kilometers).
323
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
Diesel Engine
At every oil change interval as indicated by the information display
1
Change the engine oil and filter. 2
Drain the fuel filter water trap.
Refill the diesel exhaust fluid tank.
Rotate the tires 3
, inspect the tires for wear and measure tread depth.
Perform a multi-point inspection (recommended).
Inspect the air filter restriction gauge. Replace the filter if necessary.
Inspect the automatic transmission fluid level. Consult an authorized dealer for
requirements.
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.
Inspect the engine and secondary coolant level and hoses.
Inspect the exhaust system and heat shields.
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.
Lubricate components equipped with grease fittings.
1 Do not exceed one year or 10000 miles (16000 kilometers) between service intervals.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.
3 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Other maintenance items
1
Inspect the engine and secondary cooling system
concentration (freeze-point protection), additive (corro-
sion inhibitor) strength, coolant level and hoses. 2
Every 15000 miles (24000
km)
Replace the engine-mounted and frame-mounted fuel
filters.3
Every 22500 miles (36000
km)
Replace the air inlet foam filter.
Every 45000 miles (72000
km)
Replace the front wheel bearing grease and grease seal
if using non-sealed bearings.
Every 60000 miles (96000
km)
324
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
SPECIAL OPERATING
CONDITIONS SCHEDULED
MAINTENANCE
Gasoline Engines
If you operate your vehicle primarily in any
of the following conditions, you need to
perform extra maintenance as indicated.
If you operate your vehicle
occasionally
under any of these conditions, it is not
necessary to perform the extra
maintenance. For specific
recommendations, see your dealership
service advisor or technician. Towing a trailer
Inspect and lubricate U-joints.
Inspect frequently, service
as required
See axle maintenance items under
Exceptions.
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Every 5000 miles (8000
km)
Rotate tires*
, inspect tires for wear and measure tread
depth.
Change engine oil and filter.
Every 5000 miles (8000
km) or six months
Inspect and lubricate U-joints.
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used.
Every 30000 miles (48000
km)
Replace spark plugs.
Every 60000 miles (96000
km)
* Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Extensive idling or low-speed driving for long distances, as in heavy commercial use
(such as delivery, taxi, patrol car or livery)
Replace engine air filter.
Inspect frequently, service
as required
Inspect brake system.
Every 5000 miles (8000
km)
Inspect wheels and related components for abnormal
noise, wear, looseness or drag.
Lubricate control arm and steering ball joints if equipped
with grease fittings.
326
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
Off-road operation
Inspect steering linkage, ball joints and U-joints, Lubricate
if equipped with grease fittings.
Inspect frequently, service
as required
Replace engine air filter.
Change engine oil and filter.
Every 5000 miles (8000
km) or six months
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Rotate tires*
, inspect tires for wear and measure tread
depth.
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used.
Every 30000 miles (48000
km)
* Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted.
Diesel Engine
If you operate your vehicle primarily in any
of the following conditions, you need to
perform extra maintenance as indicated.
If you operate your vehicle
occasionally
under any of these conditions, it is not
necessary to perform the extra
maintenance. For specific
recommendations, see your dealership
service advisor or technician. Towing a trailer
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
See the axle maintenance items under
Exceptions.
Inspect the coolant concentration (freeze-point protec-
tion) and additive (corrosion inhibitor) strength. Add
engine coolant additive if necessary.
Every 15000 miles (24000
km) or 600 engine hours
328
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
Sustained high-speed driving at gross vehicle weight rating (maximum loaded weight
for vehicle operation)
Replace the wheel bearing grease and grease seals if using
non-sealed bearings.
Every 30000 miles (48000
km)
Flush and refill the engine coolant. Do not add engine
coolant additive.
Every 60000 miles (96000
km) or 2400 engine hours
Note: When adding coolant additive, do not exceed the specified maximum of 48 fluid
ounces (1.4 liters). Operating the engine with excessive coolant additive may cause
overheating which could lead to severe, permanent engine damage.
Note: After the initial coolant flush and fill at 60000 miles (96000 kilometers) or 2400
engine hours, flush and fill every 45000 miles (72000 kilometers) or 1800 engine hours
thereafter. Operating in sustained ambient temperatures below -10°F (-23°C) or above 100°F (38°C)
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
Replace the wheel bearing grease and grease seals if using
non-sealed bearings.
Every 30000 miles (48000
km) Operating in dusty or sandy conditions (such as unpaved or dusty roads)
Rotate the tires*
, inspect the tires for wear and measure
tread depth.
Every 7500 miles (12000
km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Change the engine oil and filter. **
Every 7500 miles (12000
km), six months or 300
engine hours Inspect and lubricate the U-joints.
331
F650750 (TBC), enUSA, First Printing Scheduled Maintenance
Operating in dusty or sandy conditions (such as unpaved or dusty roads)
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
Replace the air inlet foam filter.
Every 30000 miles (48000
km)
Replace the wheel bearing grease and grease seals if using
non-sealed bearings.
* Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted.
** Reset the Intelligent Oil-Life Monitor after engine oil and filter changes. Off-road operation
Inspect functional holes in each leg of the twin exhaust
tips and the holes under the shield just inboard of the right
rear tire to make sure they are clean and clear of debris or
foreign materials. Refer to the Vehicle Care chapter of your
owner ’s manual for more information.
As required
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Rotate the tires*
, inspect the tires for wear and measure
tread depth.
Every 7500 miles (12000
km), six months or 300
engine hours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Change the engine oil and filter. **
Every 7500 miles (12000
km) or 300 engine hours
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
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F650750 (TBC), enUSA, First Printing Scheduled Maintenance
2
2-Speed Rear Axle........................................119
Axle Shifting.......................................................... 119
A
A/C See: Climate Control........................................... 70
About This Manual...........................................7
Diesel Engine Information................................... 8
Minor Troubleshooting Guide............................ 9
Warnings.................................................................... 8
ABS See: Brakes........................................................... 120
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes................................................................ 120
Accessories
.....................................................310
Accessories See: Replacement Parts
Recommendation............................................ 13
Adjusting the Headlamps
........................206
Horizontal Aim Adjustment........................... 207
Vertical Aim Adjustment................................ 206
Adjusting the Steering Wheel
...................44
Air Brakes.........................................................125 Air Chamber Stroke Indication...................... 125
Cam Brakes - Automatic Slack Adjusters........................................................... 125
Emergency Air Brake......................................... 126
Air Conditioning See: Climate Control........................................... 70
Air Filter See: Changing the Engine Air Filter - 6.7L
Diesel................................................................... 211
See: Changing the Engine Air Filter - 6.8L..................................................................... 210
Air Induction System Inspection.............217 Chassis-mounted Charge Air Cooler...........218
Air Suspension
...............................................138
Air Suspension Dump Button........................ 138
Connecting and Disconnecting a Trailer with Air Suspension and Air Suspension
Dump Button................................................... 138
Suspension Conversions................................. 138
System Indicator Light...................................... 138
Appendices....................................................345 Audible Warnings and Indicators..............61
Headlamps On Warning Chime....................... 61
Key in Ignition Warning Chime......................... 61
Audio Control
..................................................44
Media........................................................................\
45
Seek, Next or Previous........................................ 45
Audio Input Jack............................................277
Audio System
................................................270
General Information......................................... 270
Audio Unit - Vehicles With: AM/FM/CD/ SYNC..............................................................272
Audio Unit - Vehicles With: AM/FM.......271
Automatic Transmission.............................113 Brake-Shift Interlock.......................................... 116
If Your Vehicle Gets Stuck In Mud or Snow.................................................................... 117
Understanding the Shift Positions of a 6– Speed Automatic Transmission..........113
Understanding your SelectShift Automatic ™ transmission.......................... 114
Automatic Transmission Fluid Check
............................................................200
Checking Automatic Transmission
Fluid................................................................... 200
Auxiliary Power Points..................................81 110 Volt AC Power Points.................................... 81
12 Volt DC Power Point........................................ 81
Locations.................................................................. 81
Auxiliary Switches........................................310
Axle Inspection
..............................................221
Front Axle............................................................... 221
B
Battery See: Changing the 12V Battery..................... 204
Bonnet Lock See: Opening and Closing the Hood............181
Booster Seats..................................................25 Types of Booster Seats...................................... 26
Brake Fluid Check.........................................201
Brakes...............................................................120 General Information.......................................... 120
Brake System Inspection...........................218 Air Brakes............................................................... 219
Driveline Parking Brake..................................... 221
Hydraulic Brakes................................................ 220
Breaking-In.....................................................146
367
F650750 (TBC), enUSA, First Printing Index