Page 407 of 527
MAINTAINING YOUR VEHICLE
CONTENTS
mEngine Compartment Ð 6.7L Diesel Engine....408
mOnboard Diagnostic System (OBD II).........409
mReplacement Parts......................409
mEngine Data Plate......................410
mAuthorized Dealer Service................410
mService Information.....................410
mMaintenance Procedures..................412
NEngine Oil..........................413
NDrive Belt...........................418NEngine Air Cleaner Filter (6.7L Diesel
Engines)............................419
NDraining Fuel/Water Separator Filter (6.7L
Diesel Engine).......................422
NIntervention Regeneration Strategy ± EVIC
Message Process Flow (Catalyst Full Message)
(6.7L Diesel Engines Only)...............425
NMaintenance Free Batteries...............428
NAir Conditioner Maintenance.............430
NPower Steering Ð Fluid Check............431
7
Page 427 of 527

WARNING!
Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain conditions
and be hazardous or explosive when mixed with
diesel fuel.
CAUTION!
Due to lack of lubricants in alcohol or gasoline, the
use of these fuels can cause damage to the fuel
system.
NOTE:A maximum blend of 5% biodiesel, meeting
ASTM specification D-6751 may be used with your
CumminstDiesel equipped vehicle. Use of biodieselmixture in excess of 5% can negatively impact the on-
engine fuel filter's ability to separate water from the fuel,
resulting in high pressure fuel system corrosion or dam-
age.
NOTE:As sufficient testing has not been completed,
ethanol blends are not recommended or approved for use
with your CumminstDiesel equipped vehicle.
NOTE:In addition, commercially available fuel addi-
tives are not necessary for the proper operation of your
CumminstDiesel equipped vehicle.
Intervention Regeneration Strategy ± EVIC
Message Process Flow (Catalyst Full Message)
(6.7L Diesel Engines Only)
Your new Cummins 6.7L diesel meets all EPA Heavy
Duty Diesel Engine Emissions Standards, resulting in the
lowest emitting diesel engine ever produced.
MAINTAINING YOUR VEHICLE 425
7
Page 488 of 527

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
ªOil Change Requiredº on your Electronic Vehicle Infor-
mation Center (EVIC). The engine oil change indicator
system is duty cycle based, which means the engine oil
change interval may fluctuate depending on your per-
sonal driving style. Driving styles such as frequent stop
and go type driving can increase the frequency of the
engine oil change. This is the result of more frequent
regeneration of the exhaust aftertreatment 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 ªOil Change Required ± If Equipped,ºunder ªSystem Status (EVIC Displays)º in the ªElectronic
Vehicle Information Center (EVIC)º Section of this
manual.
Perform Service Indicator
Your vehicle will require emissions maintenance at a set
interval. To help remind you when this maintenance is
due, the Electronic Vehicle Information Center (EVIC)
will display ªPerform Serviceº. When the ªPerform Ser-
viceº message is displayed on the EVIC it is necessary to
have the emissions maintenance performed. Emissions
maintenance includes replacing the Closed Crankcase
Ventilation (CCV) filter element, cleaning of the EGR
Cooler, and cleaning of the EGR Valve. The procedure for
clearing and resetting the9Perform Service9indicator
message is located in the appropriate Service Informa-
tion.
486 MAINTENANCE SCHEDULES
8
M
A
I
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T
E
N
A
N
C
E
S
C
H
E
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U
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E
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Page 515 of 527

Illuminated Entry........................ 20
Immobilizer (Sentry Key)................... 15
Infant Restraint........................61,62
Inflation Pressure Tires.................... 333
Information Center...................... 143
Information Center, Vehicle................. 143
Inside Rearview Mirror.................... 84
Instrument Cluster....................188,189
Instrument Panel and Controls.............. 187
Instrument Panel Lens Cleaning............. 458
Integrated Power Module (Fuses)............ 459
Interior Appearance Care.................. 457
Interior Lights.......................... 129
Intermittent Wipers (Delay Wipers)........... 136
Intervention Regeneration Strategy........... 425
Introduction............................. 4
Jack Location........................... 385
Jack Operation.......................... 387Jump Starting.......................... 397
Key, Programming........................ 17
Key, Replacement........................ 16
Key, Sentry (Immobilizer)................... 15
Keyless Entry System...................... 21
Keys................................. 12
Knee Bolster............................ 48
Lane Change and Turn Signals.............. 133
Lap Belts.............................. 45
Lap/Shoulder Belts....................... 36
LATCH (Lower Anchors and Tether for
CHildren).............................. 65
Life of Tires............................ 330
Lights..............................78,129
Airbag............................58,190
Anti-Lock Warning..................195,314
Brake Warning........................ 194
INDEX 513
10