DIESEL ENGINE BREAK-IN RECOMMENDATIONS
• The Cummins®turbocharged diesel engine does not require a break-in period due
to its construction. Normal operation is allowed, providing the following recom-
mendations are followed: • Warm up the engine before placing it under load.
• Do not operate the engine at idle for prolonged periods.
• Use the appropriate transmission gear to prevent engine lugging.
• Observe vehicle oil pressure and temperature indicators.
• Check the coolant and oil levels frequently.
•
Vary throttle position at highway speeds when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer towing or no load operation will extend the
time before the engine is at full efficiency. Reduced fuel economy and power may be
seen at this time.
• Because of the construction of the Cummins
®turbocharged diesel engine, engine
run-in is enhanced by loaded operating conditions which allow the engine parts to
achieve final finish and fit during the first 6,000 miles (10 000 km).
DIESEL ENGINE STARTING PROCEDURES
Engine Block Heater
• For ambient temperatures below 0°F (-18°C), engine block heater usage is recommended.
• For ambient temperatures below –20°F (-29°C), engine block heater usage is required.
• The engine block heater cord is routed under the hood to the right side and can be located just behind the grille near the headlamp.
• Connect the heater cord to a ground-fault interrupter protected 110–115 volt AC electrical outlet with a grounded, three-wire extension cord.
NOTE:
The block heater will require 110 volts AC and 6.5 amps to activate the heater element.
•The block heater must be plugged in at least one hour to have an adequate warming
effect on the coolant.
Water In Fuel Message
•
If a Water In Fuel message orindicator appears in the cluster and a chime
sounds five times, the fuel/water separator will need to be drained immediately to
prevent engine damage.
• Refer to “Draining Fuel Water Separator” in this guide for draining instructions or see your dealer.
DIESEL
120
- Electronic Throttle Control (ETC) Light
•
This light informs you of a problem with the Electronic Throttle Control (ETC) system.
• If a problem is detected, the light will come on while the engine is running. Cycle the ignition when the vehicle has completely stopped and the shift lever is placed
in the PARK position; the light should turn off.
• If the light remains lit with the engine running, your vehicle will usually be drivable; however, see an authorized service center immediately. If the light is
flashing when the engine is running, immediate service is required and you may
experience reduced performance, an elevated/rough idle or engine stall and your
vehicle may require towing.
- Air Bag Warning Light
• If the light is not on during starting, stays on, or turns on while driving, have the vehicle serviced by an authorized service center immediately.
- SERV (Service) 4WD Indicator Light
• The SERV 4WD light monitors the electric shift four-wheel drive system. If the SERV 4WD light stays on or comes on during driving, it means that the four-wheel
drive system is not functioning properly and that service is required.
• For vehicles equipped with a premium cluster this indicator will display in the Electronic Vehicle Information Center (EVIC).
- Transmission Temperature Warning Light
• This light indicates that there is excessive transmission fluid temperature that might occur with severe usage such as trailer towing. If this light turns on, stop the
vehicle and run the engine at idle, with the transmission in NEUTRAL, until the
light turns off. Once the light turns off, you may continue to drive normally.
OIL CHANGE EVIC INDICATOR
Message
•If an “oil change” message (shown as "Change Oil Soon" and "Oil Change Needed")
appears and a single chime sounds, it is time for your next required oil change.
Resetting The Light After Servicing
• Turn the ignition switch to the ON/RUN position (do not start engine).
• Fully depress the accelerator pedal three times within 10 seconds.
• Turn the ignition switch to the OFF/LOCK position.
- Low Coolant Level Indicator Light
• This light indicates low coolant level. If the light turns on while driving, stop the vehicle and shut off the engine as soon as possible.
• We recommend you do not operate the vehicle or engine damage will occur. Have the vehicle serviced immediately.
WHAT TO DO IN EMERGENCIES
133
MAINTENANCE SCHEDULE – GASOLINE ENGINE
Your vehicle is equipped with an automatic oil change indicator system. The oil change
indicator system will remind you that it is time to take your vehicle in for scheduled
maintenance.
Based on engine operation conditions, the oil change indicator message will
illuminate. This means that service is required for your vehicle. Operating conditions
such as frequent short-trips, trailer tow, extremely hot or cold ambient temperatures,
and E85 fuel usage will influence when the “Oil Change Required” message is
displayed. Severe Operating Conditions can cause the change oil message to
illuminate as early as 3,500 miles (5,600 km) since last reset. Have your vehicle
serviced as soon as possible, within the next 500 miles (805 km).
Your authorized dealer will reset the oil change indicator message after completing
the scheduled oil change. If a scheduled oil change is performed by someone other
than your authorized dealer, the message can be reset by referring to the steps
described under “Electronic Vehicle Information Center (EVIC)/Oil Change Re-
quired” in “Understanding Your Instrument Panel” for further information.
NOTE:
Under no circumstances should oil change intervals exceed 10,000 miles (16,000 km)
or twelve months, whichever comes first.
Once A Month Or Before A Long Trip:
• Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual wear or damage
• Check the fluid levels of the coolant reservoir, brake master cylinder, powersteering (2500/3500 Models Only) and automatic transmission (six-speed only) as
needed
• Check function of all interior and exterior lights
MAINTAINING YOUR VEHICLE
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Maintenance Chart – Gasoline EngineMileage or time passed (whichever comes first)
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: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
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
Inspect the CV joints. X X X X X
Inspect front suspension, tie rod ends, and
replace if necessary.
XX X X X X X
Inspect the front and rear axle surfaces.
If gear oil leakage is suspected, check the
fluid level. If using your vehicle for police,
taxi, fleet, off-road or frequent trailer towing,
change axle fluid. XX X X X X XInspect the brake linings, parking brake function.
XX X X X X X
Inspect transfer case fluid. X X X
Additional Maintenance
Replace engine air filter. X X X X X
Replace spark plugs (3.6L engine).** X
Replace the top row (intake side) of spark
plugs (4.7L Engine).** XX X X X
Replace the side row (exhaust side) of spark
plugs (4.7L Engine).** X
Replace spark plugs (5.7L engine).** X X X X X
Replace the ignition cables (4.7L Engine). X
MAINTAINING YOUR VEHICLE
170
Mileage or time passed (whichever comes first)
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: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
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
Flush and replace the engine coolant at
10 years or 150,000 miles (240,000 km)
whichever comes first. XX
Change automatic transmission fluid and
filter(s), if using your vehicle for police, taxi,
fleet, or frequent trailer towing. XChange automatic transmission fluid and filter.
X
Inspect the transfer case fluid, change for any
of the following: police, taxi, fleet, or frequent
trailer towing. X
Change the transfer case fluid. X
Inspect and replace PCV valve if necessary. X
** The spark plug change interval is mileage based only, yearly intervals do not apply.
WARNING!
• You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the
right equipment. If you have any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.
• Failure to properly inspect and maintain your vehicle could result in a component malfunction and effect vehicle handling and
performance. This could cause an accident.
MAINTAINING YOUR VEHICLE
171
Maintenance Chart – Diesel Engine
Miles:
7,500 15,000 22,500 30,000 37,500 45,000 52,500 60,000 67,500 75,000 82,500 90,000 97,500
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78
Or Kilometers:
12,000 24,000 36,000 48,000 60,000 72,000 84,000 96,000 108,000 120,000 132,000 144,000 156,000
Rotate the tires. X XXXXXXXXXXXX
Lubricate front drive shaft fitting (4x4). X XXXXXXXXXXXX
Lubricate outer tie rod ends. X XXXXXXXXXXXX
Replace engine fuel filter element. XXXXXX
Replace chassis mounted fuel filter element. XXXXXX
Inspect the brake linings. XXXX
Inspect and adjust parking brake. XXXX
Inspect the front and rear axle surfaces. If gear oil
leakage is suspected, check the fluid level. If using
your vehicle for police, taxi, fleet, off-road or
frequent trailer towing change the axle fluid. XXXXXX
Inspect drive belt; replace as required. XXXX
Check the transfer case fluid (4x4). XX
Change the transfer case fluid (4x4). XInspect the front suspension, tie rod ends and boot
seals for cracks or leaks and all parts for damage,
wear, improper looseness or end play; replace if
necessary.
XXXXXX
Inspect wheel bearings. XXX
Change automatic transmission fluid (AS69RC
transmission only). XXX
MAINTAINING YOUR VEHICLE
175
Miles:
7,500 15,000 22,500 30,000 37,500 45,000 52,500 60,000 67,500 75,000 82,500 90,000 97,500
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78
Or Kilometers:
12,000 24,000 36,000 48,000 60,000 72,000 84,000 96,000 108,000 120,000 132,000 144,000 156,000
Change automatic transmission fluid and filter(s)
if using your vehicle for any of the following:
police, fleet, or frequent trailer towing
(68RFE transmission only). X
Change the manual transmission fluid if using your
vehicle for any of the following: police, fleet, or
frequent trailer towing. X
Check the Diesel Exhaust Fluid (DEF) tank; refill if
necessary. XXXXXXXXXXXXX
Replace Crankcase Ventilation Filter (CCV). X
Flush and replace power steering fluid. X
MAINTAINING YOUR VEHICLE
176
FUSES
POWER DISTRIBUTION CENTER (FUSES)
• The Power Distribution Center is lo-cated in the engine compartment near
the battery. This center contains car-
tridge fuses and mini fuses. A descrip-
tion of each fuse and component may
be stamped on the inside cover, other-
wise the cavity number of each fuse
is stamped on the inside cover that
corresponds to the following chart.
Cavity Cartridge Fuse Micro Fuse Description
F01 80 Amp Red Rad Fan Control Module –
If equipped
F03 60 Amp Yellow Rad Fan – If Equipped
F05 40 Amp Green Compressor for Air Suspension –
If Equipped
F06 40 Amp Green Antilock Brakes/Electronic
Stability Control Pump
F07 40 Amp Green Starter Solenoid
F08 30 Amp Pink Emissions Diesel – If Equipped
F09 40 Amp Green Diesel Fuel Heater – If Equipped
F10 40 Amp Green Body Controller / Exterior
Lighting #2
F10 50 Amp Red Body Controller / Exterior Lighting
#2 – If Equipped with Stop/Start
F11 30 Amp Pink Integrated Trailer Brake Module –
If Equipped
F12 40 Amp Green Body Controller #3 / Interior
Lights
F13 40 Amp Green Blower Motor
F14 40 Amp Green Body Controller #4 / Power Locks
F15 30 Amp Pink Electric Park Brake Right Side –
If Equipped
F19 30 Amp Pink SCR – If Equipped
F20 30 Amp Pink Passenger Door Module
F21 30 Amp Pink Drive Train Control Module
F22 20 Amp Yellow Engine Control Module
F23 30 Amp Pink Body Controller #1
F24 30 Amp Pink Driver Door Module
F25 30 Amp Pink Front Wiper Low Speed
MAINTAINING YOUR VEHICLE
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