Page 2 of 430

Four-Wheel Drive
.................................. 312
Front Axle
............................................ 313
Noise Control System
........................... 314
Bulb Replacement
................................ 315
Windshield Wiper Blade Replacement
... 316
Other Service Items
.............................. 317
Tires
..................................................... 321
Appearance Care
.................................. 331
Vehicle Identification
............................. 340
Electrical System
.................................. 340
Capacities and Specifications
................ 347
Normal Maintenance
Replacement Parts
............................ 352Maintenance Schedule
.............................. 359
Maintenance Schedule
.......................... 360
Customer Assistance Information
............. 403
Customer Assistance and Information
... 404
Reporting Safety Defects
...................... 414
Index
.......................................................... 417
2
Page 80 of 430
Servicing Your Airbag-Equipped
Vehicle
Airbags affect how your vehicle should be
serviced. There are parts of the airbag system
in several places around your vehicle. You do
not want the system to inflate while someone is
working on your vehicle. Your dealer and the
service manual have information about servicing
your vehicle and the airbag system. To purchase
a service manual, seeService Publications
Ordering Information on page 415.
{CAUTION:
For up to 10 seconds, after the ignition is
turned off and the battery is disconnected,
an airbag can still in ate during improper
service. You can be injured if you are
close to an airbag when it in ates. Avoid
yellow connectors. They are probably part
of the airbag system. Be sure to follow
proper service procedures, and make sure
the person performing work for you is
quali ed to do so.
The airbag system does not need regular
maintenance.
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Page 82 of 430

Restraint System Check
Checking the Restraint Systems
Now and then, make sure the safety belt reminder
light and all your belts, buckles, latch plates,
retractors and anchorages are working properly.
Look for any other loose or damaged safety
belt system parts. If you see anything that might
keep a safety belt system from doing its job, have
it repaired. SeeCare of Safety Belts on page 334
for more information.
Torn or frayed safety belts may not protect you in
a crash. They can rip apart under impact forces.
If a belt is torn or frayed, get a new one right away.Also look for any opened or broken airbag covers,
and have them repaired or replaced. The airbag
system does not need regular maintenance.
Notice:If you damage the covering for the
driver’s or the right front passenger’s airbag,
the airbag may not work properly. You may
have to replace the airbag module in the
steering wheel or both the airbag module
and the instrument panel for the right front
passenger’s airbag. Do not open or break the
airbag coverings.
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Page 95 of 430

Sun Visors
To block out glare, you can swing down the
visors. You can also swing them out to block glare
from the side.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an
elaborate break-in. But it will perform better in
the long run if you follow these guidelines:
Let your engine warm up before you
operate your vehicle under load.
Keep your speed at 55 mph (88 km/h) or
less for the rst 500 miles (805 km).
Do not drive at any one speed, fast or
slow, for the rst 500 miles (805 km).
Do not make full-throttle starts.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time
your new brake linings are not yet broken
in. Hard stops with new linings can mean
premature wear and earlier replacement.
Follow this breaking-in guideline every time
you get new brake linings.
Use the lowest gear you can when you start
a loaded vehicle in motion and when going
up hills to avoid overloading the engine.
Check and adjust engine and transmission
uid levels often and be sure tires are
properly in ated for the load you are
carrying.
If you have a Caterpillar®diesel engine, see
the Caterpillar®Diesel Engine Operation
and Maintenance Manual.
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Page 99 of 430

Gasoline Engine Warm-Up
When you have started your engine, let it run for
20 or 30 seconds to warm up before you put a
load on the engine.
Drive at moderate speeds for the first 2 to 3 miles
(3.2 to 4.8 km), especially in cold weather. See
High Idle System on page 106.
Restarting the Gasoline Engine While
Moving (Automatic Transmission)
If you have to restart the engine while the
vehicle is moving, you will first have to shift to
NEUTRAL (N). This safety feature prevents
starting the engine when the transmission is in a
drive gear.
Stopping the Gasoline Engine
Let your engine idle for a few seconds before
turning it off after you have finished driving your
vehicle.
If you shift to NEUTRAL (N) or PARK (P), set the
parking brake.
If your vehicle has a two-speed axle, put the
range selector in low. To be sure the axle has
shifted into low, engage the clutch and
transmission; the vehicle may move slightly
when you do this.
While your engine is idling and before you turn it
off, you can make a list of any operational or
handling concerns to give to responsible
maintenance personnel so they can handle them
right away.
Moisture will condense in a fuel tank that is almost
empty if the engine has not run for a while,
even just overnight under some conditions. So, it
is always best to refuel your vehicle at the end
of each run.
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Page 100 of 430

Starting the Diesel Engine
Your vehicle’s diesel engine starts differently than
a gasoline engine. Read the following pages to
learn how to start, restart, warm-up, and stop your
diesel engine.
The information applies to Caterpillar
®Diesel
Engine, 6.6L DURAMAX®Diesel Engine, Isuzu 6H
Diesel Engine, unless otherwise noted.
If you have a Caterpillar
®Diesel Engine, also refer
to your Caterpillar®Diesel Engine Operation &
Maintenance Manual for the starting procedure.
Automatic Transmission
Move your shift lever to PARK (P) or
NEUTRAL (N). Your engine will not start in
any other position — that is a safety feature.
To restart when you are already moving,
use NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could
damage the transmission. Shift to PARK (P)
only when your vehicle is stopped.
Manual Transmission
Move your shift lever to NEUTRAL and hold the
clutch pedal to the floor while starting the engine.
Your vehicle will not start if the clutch pedal is not all
the way down — that is a safety feature.
Starting Your Engine
1. Turn your ignition key to RUN.
Observe the wait to start light. SeeWait to
Start Indicator on page 174. This light may not
come on if the engine is hot.
If you have a Caterpillar
®diesel engine, see
your Caterpillar®Diesel Engine Operation
& Maintenance Manual for proper wait to start
light operation.
2. As soon as the wait to start light goes off,
immediately turn the ignition key to START.
When the engine starts, let go of the key.
If your vehicle is equipped with a DURAMAX
®
6600 Diesel Engine, it has a fast warm-up
glow plug system. The wait to start light
will illuminate for a much shorter time than
most diesel engines, due to the rapid heating
of the glow plug system.
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Page 102 of 430

The following tips will help you get good starting in
cold weather.
•Use the recommended engine oil when the
outside temperature drops below freezing.
SeeEngine Oil (Caterpillar
®Diesel Engine) on
page 268orEngine Oil (Gasoline Engine)
on page 268orEngine Oil (DURAMAX
®/Isuzu
Diesel Engine) on page 272. When the
outside temperature drops below 0°F (−18°C),
use of the optional engine coolant block
heater is recommended.
•If you experience longer cranking times, notice
an unusual amount of exhaust smoke or are
at higher altitudes (over 7,000 ft. or 2 135 m),
you may use your optional engine coolant
block heater. SeeEngine Coolant Heater on
page 111.
•SeeWhat Fuel to Use on page 253for
information on what fuel to use in cold
weather.
Cold Weather Starting
(Caterpillar®Diesel)
Because the diesel engine uses compression
ignition, it is harder to start in cold weather than a
gasoline engine. The air intake heater and use
of the proper engine oil, optional engine coolant
heaters and optional ether injection systems
help cold weather starting. See the Caterpillar
®
Diesel Engine Operation & Maintenance Manual
for more information.
Restarting the Diesel Engine While
Moving (Automatic Transmission)
If you have to restart the engine while the vehicle
is moving, you will first have to shift to
NEUTRAL (N). This safety feature prevents
starting the engine when the transmission is in a
drive gear for more information.
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Page 103 of 430

Stopping the Diesel Engine
1. Set the parking brake and shift to
NEUTRAL (N) or PARK (P).
2. Turn the ignition key to OFF.
If your vehicle has a two-speed axle, see
Two-Speed Rear Axle Electric Shift Control on
page 113.
If you have a Caterpillar
®diesel engine, see your
Caterpillar®Diesel Engine Operation &
Maintenance Manual for additional information.
Diesel Engine Warm-Up
Several factors affect how quickly your diesel
engine warms up. These can include outside
temperature, engine load, idle time and your
vehicle’s option content. Your vehicle may be
equipped with some features that can help
the engine reach operating temperature sooner.
Some of these features are discussed below.Also, remember that an automatic transmission
adds heat to the cooling system through the heat
exchanger in the radiator. Because of this,
vehicles equipped with automatic transmissions
are often able to retain engine coolant heat better
than manual transmission vehicles.
See your Caterpillar
®Operation & Maintenance
manual for additional diesel engine warm-up
information.
If Your Diesel Engine Will Not Start
If you have run out of fuel, seeRunning Out of
Fuel on page 262.
If you are not out of fuel, and your engine will not
start, do this:
Turn your ignition key to RUN. Immediately after
the wait to start light goes off, turn the ignition key
to START.
If the light does not go off, wait a few seconds, then
try starting your engine again. And, see your dealer
as soon as you can for a starting system check.
If the light comes on and then goes off and you
know your batteries are charged, but your engine
still will not start, your vehicle needs service.
103