Page 311 of 493

SNOW TIRES
Snow tires should be of the same size and type construc-
tion as the front tires. Consult the manufacturer of the
snow tire to determine any maximum vehicle speed
requirement associated with the tire. These tires should
always be operated at the vehicle maximum capacity
inflation pressures under any load condition.
While studded tires improve performance on ice, skid
and traction capability on wet or dry surfaces may be
poorer than that of non-studded tires. Some states pro-
hibit studded tires; therefore, local laws should be
checked before using these tire types.
TIRE ROTATION RECOMMENDATIONS
Tires on the front and rear axles of vehicles operate at
different loads and perform different steering, driving,
and braking functions. For these reasons, they wear at
unequal rates, and develop irregular wear patterns.
These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on On/Off Road
type tires. Rotation will increase tread life, help to main-
tain mud, snow, and wet traction levels, and contribute to
a smooth, quiet ride.
STARTING AND OPERATING 311
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Page 328 of 493

Towing Requirements
To promote proper break-in of your new vehicle driv-
etrain components the following guidelines are recom-
mended:
CAUTION!
•Avoid towing a trailer for the first 500 miles (805
km) of vehicle operation. Doing so may damage
your vehicle.
•During the first 500 miles (805 km) of trailer
towing, limit your speed to 50 mph (80 km/h).
Perform the maintenance listed in Section 8 of this
manual. When towing a trailer, never exceed the GAWR,
or GCWR, ratings.
WARNING!
Improper towing can lead to an injury accident.
Follow these guidelines to make your trailer towing
as safe as possible:
Make certain that the load is secured in the trailer
and will not shift during travel. When trailering
cargo that is not fully secured, dynamic load shifts
can occur that may be difficult for the driver to
control. You could lose control of your vehicle and
have an accident.
•When hauling cargo or towing a trailer, do not over-
load your vehicle or trailer. Overloading can cause a
loss of control, poor performance or damage to brakes,
axle, engine, transmission, steering, suspension, chas-
sis structure or tires.
328 STARTING AND OPERATING
Page 350 of 493
HAZARD WARNING LIGHTS
The Hazard Warning switch is mounted on the top of the
steering column as shown in the illustration.To engage the Hazard Warning lights, depress the button
on the top of the steering column. When the Hazard
Warning switch is activated, all directional turn signals
will flash off and on to warn oncoming traffic of an
emergency. Push the button a second time to turn off the
flashers.
This is an emergency warning system and should not be
used when the vehicle is in motion. Use it when your
vehicle is disabled and is creating a safety hazard for
other motorists.
When you must leave the vehicle to seek assistance, the
Hazard Warning lights will continue to operate even
though the ignition switch is OFF.
NOTE:With extended use, the Hazard Warning lights
may discharge your battery.
Hazard Light Warning Switch
350 WHAT TO DO IN EMERGENCIES
Page 371 of 493
MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment....................374
▫5.9L HO Cummins Turbo Diesel...........374
Onboard Diagnostic System (OBD II).........375
Replacement Parts......................375
Dealer Service.........................376
Service Information.....................376
Maintenance Procedures..................379
▫Engine Oil..........................379
▫Drive Belt...........................385▫Engine Air Cleaner Filter................385
▫Draining Fuel/Water Separator Filter.......387
▫Maintenance Free Batteries...............390
▫Air Conditioner Maintenance.............391
▫Power Steering — Fluid Check............392
▫Front Suspension Ball Joints..............393
▫Steering Linkage — Inspection............393
▫Front Prop Shaft Lubrication.............394
7
Page 392 of 493

WARNING!
•Use only refrigerants and compressor lubricants
approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer
to Section 3 of the Warranty Information book for
further warranty information.
•The air conditioning system contains refrigerant
under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced repairman.
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluorocar-
bon (HFC) that is endorsed by the Environmental Pro-
tection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by dealers or other service facilities
using recovery and recycling equipment.
Power Steering — Fluid Check
Checking the power steering fluid level at a defined
service interval is not required. The fluid should only be
checked if a leak is suspected, abnormal noises are
apparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through a certified
DaimlerChrysler Dealership.
392 MAINTAINING YOUR VEHICLE
Page 393 of 493
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to insure accurate fluid level reading. Do
not overfill. Use only manufacturers recommended
power steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces. Refer to Fluids, Lubricants, and Genuine Parts
for correct fluid type.
Front Suspension Ball Joints
The ball joints originally supplied with the vehicle are
permanently lubricated at the factory and do not require
service. The ball joints and seals should be inspected
whenever the vehicle is serviced for other reasons.
Steering Linkage — Inspection
Whenever the vehicle is hoisted, all steering linkage
joints should be inspected for evidence of damage. If
seals are damaged, parts should be replaced to prevent
leakage or contamination of the grease.
MAINTAINING YOUR VEHICLE 393
7
Page 439 of 493
Chassis
Component Fluids, Lubricants and Genuine Parts.
Automatic Transmission MoparATF+4, Automatic Transmission Fluid.
Transfer Case MoparATF+4, Automatic Transmission Fluid.
Manual Transmission Fluid G-56 MoparATF+4, Automatic Transmission Fluid.
Clutch Linkage Multipurpose Grease, NLGI Grade 2 E.P. or equivalent.
Front and Rear Axle Fluid 2500/3500
ModelsGL-5 SAE 75W-90 Synthetic or equivalent. 2500/3500 axels do not require
limited slip additive.
Brake Master Cylinder MoparDOT 3 and SAE J1703 should be used or equivalent. If DOT 3
brake fluid is not available, then DOT 4 is acceptable. Use only recom-
mended brake fluids.
Power Steering Reservoir MoparATF+4, Automatic Transmission Fluid.
MAINTAINING YOUR VEHICLE 439
7
Page 479 of 493

Bearings.............................. 409
Belts, Drive............................ 385
Belts, Seat.............................. 31
Body Mechanism Lubrication............... 394
B-Pillar Location........................ 296
Brake Fluid............................ 439
Brake System........................287,403
Anti-Lock (ABS)....................... 288
Disc Brakes.......................... 403
Fluid Check.......................... 403
Hoses.............................. 405
Master Cylinder....................... 403
Parking............................. 286
Warning Light........................ 182
Bulb Replacement....................... 424
Bulbs, Light............................ 424
Cab Top Clearance Lights.................. 431
Calibration, Compass..................... 138Camper............................... 167
Capacities, Antifreeze (Engine Coolant)........ 437
Capacities, Fluid........................ 437
Caps, Filler
Power Steering........................ 392
Car Washes............................ 416
Carbon Monoxide Warning...............71,169
Cargo Light............................ 124
Cassette Tape and Player Maintenance......... 229
CD (Compact Disc) Player............186,194,208
Cellular Phone.......................... 83
Center High Mounted Stop Light............ 430
Center Lap Belts......................... 40
Center Seat Storage Compartment.........157,158
Certification Label....................... 319
Charge Air Cooler....................... 402
Chart, Tire Sizing........................ 293
Check Engine Light (Malfunction Indicator Light) . 181
Child Restraint........................55,56
INDEX 479
10