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Required Maintenance
Refer to the Maintenance Schedules on the following
pages for required maintenance.
At Every Oil Change Interval As Indicated By OilChange Indicator System:
•Change oil and filter.
• Completely fill the Diesel Exhaust Fluid tank.
• Drain water from fuel filter assembly.
• Rotate the tires. Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
• Inspect battery and clean and tighten terminals as
required.
• Inspect brake pads, shoes, rotors, drums, hoses
and park brake.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Inspect engine cooling system protection and
hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or
off-road conditions.
6
MAINTENANCE SCHEDULE 121
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Maintenance Chart — Diesel Fuel Up To B5 Biodiesel
Mileage or time passed
(whichever comes first)
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
16,000
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Completely fill the Diesel Exhaust Fluid tank. X X X X X X X X X X X X X X X
Inspect the CV/Universal joints. XX X X X
Inspect front suspension, tie rod ends, and re-
place if necessary. XXX X X X X
Inspect the front and rear axle fluid. If gear oil
leakage is suspected, check the fluid level. If us-
ing your vehicle for police, taxi, fleet, off-road or
frequent trailer towing change the axle fluid. XXX X X X X
Inspect the brake linings, parking brake function. X X X X X X X
122 MAINTENANCE SCHEDULE
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CAUTION!
When using ERS for engine braking while descend-
ing steep grades, be careful not to overspeed the
engine. Apply the brakes as needed to prevent en-
gine overspeed.
Overdrive Operation
The automatic transmission includes an electronically
controlled Overdrive (fifth and sixth gears). The trans-
mission will automatically shift into Overdrive if the
following conditions are present:
•The shift lever is in the DRIVE position.
• The transmission fluid has reached an adequate tem-
perature.
• The engine coolant has reached an adequate tempera-
ture. •
The vehicle speed is sufficiently high.
• The driver is not heavily pressing the accelerator.
When To Use TOW/HAUL Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting occurs,
press the TOW/HAUL switch to activate TOW/HAUL
mode. This will improve performance and reduce the po-
tential for transmission overheating or failure due to exces-
sive shifting. When operating in TOW/HAUL mode, trans-
mission upshifts are delayed, and the transmission will
automatically downshift (for engine braking) when the
throttle is closed and/or during steady braking maneuvers.
232 STARTING AND OPERATING
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NOTE:
•The torque converter clutch will not engage (and
68RFE-equipped trucks will not shift to sixth gear),
until the transmission fluid and engine coolant are
warm [usually after 1 to 3 miles (2 to 5 km) of driving].
Because the engine speed is higher when the torque
converter clutch is not engaged, it may seem as if the
transmission is not shifting properly when cold. This is
normal. Using the Electronic Range Select (ERS) shift
control, when the transmission is sufficiently warm,
will demonstrate that the transmission is able to shift
into and out of Overdrive.
•
If the vehicle has not been driven for several days, the
first few seconds of operation after shifting the transmis-
sion into gear may seem sluggish. This is due to the fluid
partially draining from the torque converter into the
transmission. This condition is normal and will not cause
damage to the transmission. The torque converter will
refill within five seconds after starting the engine.
MANUAL TRANSMISSION — IF EQUIPPED
WARNING!
You or others could be injured if you leave the
vehicle unattended without having the parking
brake fully applied. The parking brake should al-
ways be applied when the driver is not in the vehicle,
especially on an incline.
CAUTION!
Never drive with your foot resting on the clutch
pedal, or attempt to hold the vehicle on a hill with the
clutch pedal partially engaged, as this will cause
abnormal wear on the clutch.
NOTE: During cold weather, you may experience in-
creased effort in shifting until the transmission fluid
warms up. This is normal.
234 STARTING AND OPERATING
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JUMP STARTING
WARNING!
•To prevent personal injury or damage to clothing,
do not allow battery fluid to contact eyes, skin or
fabrics. Do not lean over a battery when connecting
jumper cables or allow cable clamps to touch each
other. Keep open flames or sparks away from
battery vent holes. Always wear eye protection
when working with batteries.
• Do not use a booster battery or any other booster
source that has a greater than 12 Volt system, i.e., do
not use a 24 Volt power source.
NOTE: Replacement batteries should both be of equal
size to prevent damage to the vehicle’s charging system.
Your vehicle is equipped with two 12 Volt batteries. If it
becomes necessary to use a booster battery with jumper cables to start a vehicle’s engine because its batteries are
discharged, the following procedure should be used:
Set the parking brake and place an automatic transmis-
sion in PARK (or NEUTRAL for a manual transmission).
Turn off lights, heater and other electrical loads. Observe
charge indicator (if equipped) in both batteries. If the
indicator (if equipped) is light or yellow on either battery,
replace that battery.
CAUTION!
Use the jump start procedure only when the charge
indicator (if equipped) in both batteries is dark in the
center. Do not attempt jump starting when either
battery charge indicator (if equipped) is bright or
yellow. If the charge indicator (if equipped) has a
green dot in the center, failure to start is not due to a
discharged battery and cranking system should be
checked.
262 WHAT TO DO IN EMERGENCIES
Page 269 of 338
MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED 68RFE (2500/3500 Models) .......269
ENGINE COMPARTMENT — 6.7L DIESEL —
SIX-SPEED AS69RC HD (3500/CHASSIS CAB
MODELS) ........................... .270
MAINTENANCE PROCEDURES ...........271
▫ Engine Oil ......................... .271
▫ Engine Air Cleaner Filter ................276
▫ Draining Fuel/Water Separator Filter .......280
▫ Engine Mounted Fuel Filter Replacement .....282
▫ Underbody Mounted Fuel Filter Replacement. .284 ▫
Priming If The Engine Has Run Out Of Fuel . .286
▫ Intervention Regeneration Strategy — Message
Process Flow ....................... .288
▫ Diesel Exhaust Fluid ...................289
▫ Maintenance-Free Batteries ..............289
▫ Cooling System ..................... .290
▫ Charge Air Cooler — Inter-Cooler .........296
▫ Brake System ....................... .296
▫ Clutch Hydraulic System ................298
▫ Transfer Case — If Equipped .............298
7
Page 271 of 338
ENGINE COMPARTMENT — 6.7L DIESEL — SIX-SPEED 68RFE (2500/3500 Models)
1 — Battery7 — Washer Fluid Reservoir
2 — Engine Coolant Reservoir 8 — Power Steering Fluid Reservoir
3 — Automatic Transmission Dipstick 9 — Power Distribution Center
4 — Brake Fluid Reservoir 10 — Engine Oil Dipstick
5 — Battery 11 — Engine Oil Fill
6 — Aux Power Distribution Center 12 — Air Cleaner Filter
7
MAINTAINING YOUR VEHICLE 269
Page 272 of 338
ENGINE COMPARTMENT — 6.7L DIESEL — SIX-SPEED AS69RC HD (3500/CHASSIS CAB MODELS)
1 — Battery7 — Washer Fluid Reservoir
2 — Engine Coolant Reservoir 8 — Power Steering Fluid Reservoir
3 — Automatic Transmission Dipstick 9 — Power Distribution Center
4 — Brake Fluid Reservoir 10 — Engine Oil Dipstick
5 — Battery 11 — Engine Oil Fill
6 — Aux Power Distribution Center 12 — Air Cleaner Filter
270 MAINTAINING YOUR VEHICLE