Page 71 of 528

Children Too Large for Booster Seats
Children who are large enough to wear the shoulder belt
comfortably, and whose legs are long enough to bend
over the front of the seat when their back is against the
seat back should use the lap/shoulder belt in a rear seat.
²Make sure that the child is upright in the seat.
²The lap portion should be low on the hips and as snug
as possible.
²Check belt fit periodically. A child's squirming or
slouching can move the belt out of position.
If the shoulder belt contacts the face or neck, move the
child closer to the center of the vehicle. Never allow a
child to put the shoulder belt under an arm or behind
their back.
NEW ENGINE BREAK-IN
5.7L Gas Engine
A long break-in period is not required for the engine in
your new vehicle. Drive moderately during the first 300
miles (500 km). After the initial 60 miles (100 km), speeds
up to 50 or 55 mph (80 or 90 km/h) are desirable. While
cruising, brief full-throttle acceleration, within the limits
of local traffic laws, contributes to a good break-in.
Avoid wide open throttle acceleration in low gear.
The engine oil installed in the engine at the factory is a
high quality, energy conserving type lubricant. Oil
changes should be consistent with the anticipated cli-
matic conditions under which vehicle operation will
occur. The recommended viscosity and quality grades are
discussed in Section 7 under Maintenance Procedures,
Engine Oil.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 71
2
Page 408 of 528

Engine Oil Selection (Gas Engines)
For best performance and maximum protection under all
types of operating conditions, the manufacture only
recommends engine oils that are API certified and meet
the requirements of DaimlerChrysler Material Standard
MS-6395. Use Mopar or an equivalent oil meeting the
specification MS-6395.
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacture only recommends
API Certified engine oils.
Engine Oil Viscosity (SAE Grade)
For trucks with a 5.7L engine operating under a gross
combined weight rating of 14,000 lbs or greater, SAE
5W-30 engine oil is recommended for all operating
temperatures. For all other trucks with a 5.7L engine,
operating under a gross weight rating less than 14,000
lbs SAE 5W-20 engine oil is recommended for all
operating temperatures. These engine oils improve low
temperature starting and vehicle fuel economy. Your
engine oil filler cap also shows the recommended
engine oil viscosity for your vehicle.
For information on engine oil filler cap location, see the
Engine Compartment illustration in this section.
Lubricants which do not have both, the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber should not be used.
408 MAINTAINING YOUR VEHICLE
Page 410 of 528

Engine Oil Viscosity (SAE Grade)
Use SAE 15W-40 Engine Oil that meets
DaimlerChrysler Materials Standard MS-10902 and the
API CJ-4 engine oil category.
Engine oil not designated by the DaimlerChrysler or
Cummins Material Standards and API CJ-4 should not be
used, engine and exhaust system durability may be
compromised. For lower temperature operation SAE
5W-40 engine oils may be used. These oils must meet the
same requirements as stated previously. Your engine oil
filler cap also shows the recommended engine oil viscos-
ity for your vehicle.
Synthetic Engine Oils
You may use synthetic engine oils provided the recom-
mended oil quality requirements are met, and the recom-
mended maintenance intervals for oil and filter changes
are followed.
Materials Added to Engine Oil
The manufacture strongly recommends against the addi-
tion of any additives (other than leak detection dyes or
lube odorants) to the engine oil. Engine oil is an engi-
neered product and it's performance may be impaired by
supplemental additives.
NOTE:The manufacturer offers a lube odorant (Mopar
Diesel Fresh) for diesel engines crankcases. The lube
odorant is recommended by the manufacturer to reduce
the sulfur smell that may occur during engine idling.
Engine Oil Filter
Refer to Fluids, Lubricants and Genuine Parts for the
correct part number. The engine oil filter should be
changed ateveryengine oil change.
Engine Oil And Filter Ð Change
Operate the engine until the coolant temperature reaches
140ÉF (60ÉC). Shut the engine off. Remove the oil drain
plug.
410 MAINTAINING YOUR VEHICLE
Page 520 of 528

Tampering Prohibited................... 453
Noise Emission Warranty...............451,454
Occupant Restraints....................... 35
Octane Rating, Gasoline (Fuel).............. 337
Odometer..........................177,182
Trip .............................177,182
Off-Pavement Driving (Off-Road)............ 307
Off-Road Driving (Off-Pavement)............ 307
Oil Change Indicator................145,178,482
Oil, Engine............................ 476
Capacity............................ 474
Change Interval....................407,409
Dipstick............................. 406
Disposal............................ 412
Filter.........................406,410,476
Identification Logo..................408,409
Materials Added to..................... 410
Pressure Gauge....................... 176Recommendation...................408,409
Synthetic............................ 410
Viscosity..........................408,410
Oil Filter, Change........................ 410
Onboard Diagnostic System................ 402
Operating Precautions.................... 402
Outside Rearview Mirrors.................. 82
Overdrive..........................276,282
Overdrive OFF Switch.................276,282
Overhead Console....................135,142
Overhead Travel Information Center.......... 135
Owner's Manual (Operator Manual).......... 504
Panic Alarm............................ 24
Parking Brake.......................... 308
Passenger Airbag On/Off Switch............. 52
Passing Light........................... 127
Pedals, Adjustable....................... 131
Personal Settings........................ 146
520 INDEX
Page 526 of 528

Trailer Weight.......................... 356
Transaxle
Automatic............................ 12
Manual.............................. 14
Transfer Case
Electronically Shifted.................... 294
Fluid............................... 478
Transmission
Automatic...................273,279,446,448
Fluid............................... 478
Maintenance.......................446,448
Manual.....................252,256,285,445
Shifting............................. 273
Transmitter Battery Service (Remote Keyless
Entry)................................. 25
Tread Wear Indicators.................... 330
Trip Computer.......................... 135
Trip Odometer.......................177,182
Turn Signals......................126,175,468UConnectŸ (Hands-Free Phone).............. 87
Underhood Fuses........................ 462
Uniform Tire Quality Grades................ 506
Variance, Compass....................140,150
Vehicle Identification Number (VIN)............ 8
Vehicle Information Center................. 143
Vehicle Loading......................319,347
Vehicle Modifications/Alterations.............. 8
Vehicle Storage......................... 467
Video Entertainment System (Rear Seat Video
System)............................... 226
Viscosity, Engine Oil...................... 410
Voltmeter...........................174,262
Warning Lights (Instrument Cluster
Description)........................... 174
Warnings and Cautions..................... 7
Warranty Information..................... 503
526 INDEX