
Range inhibit:Illuminates when
the transmission is not engaged in
the selected gear. The warning light
will go off when the gearshift lever
is adjusted in to the appropriate gear.
Refer to the Transmission Operator’s Manual for more information.
Charging system:Illuminates when
the battery is not charging properly.
Wait to start:Indicates the air
intake heater is in operation and
special starting procedures are
required. Refer to theDriving
chapter.
If equipped with an air intake heater, DO NOT use ether or any
other starting fluids. The use of starting fluids (ether) in an
engine equipped with an air intake heater could result in damage
and/or personal injury.
Water in fuel (if equipped):
During refueling it is possible for
water-contaminated diesel fuel to be
pumped into your fuel tank. Your
vehicle fuel system is equipped with
a fuel filter/water separator to remove water from the fuel. The indicator
light illuminates when the fuel filter/water separator has a significant
quantity of water, or when the ignition key is switched to the START
position. If the light illuminates when the engine is running, stop the
vehicle as soon as safely possible, shut off the engine and drain the filter
bowl. Allowing water to stay in the system could result in extensive
damage to, or failure of, the fuel injection system.
To drain the fuel filter/water separator (refer toMaintenance and
Specificationschapter for procedure), rotate the valve at the bottom of
the filter assembly allowing water to drain from the system. Close the
valve upon completion.
RANGE
INHIBIT
WAIT
TO
START
WATER
IN
FUEL
Instrumentation
24

Do not drain water separator while engine is running. Fuel may
ignite if separator is drained while engine is running or vehicle is
moving.
Traction control (if equipped):
Illuminates when the traction
control system is turned off.
Differential lock (if equipped):
Illuminates when the main
differential is locked (engaged).
Turn signal:Illuminates when the
left or right turn signal or the
hazard lights are turned on. If the
indicators stay on or flash faster, check for a burned out bulb.
High beams:Illuminates when the
high beam headlamps are turned on.
Key-in-ignition warning chime:Sounds when the key is left in the
ignition in the OFF/LOCK or ACC position and the driver’s door is
opened.
Headlamps on warning chime:Sounds when the headlamps or parking
lamps are on, the ignition is off (and the key is not in the ignition) and
the driver’s door is opened.
Instrumentation
25

Fuel gauge:Indicates
approximately how much fuel is left
in the fuel tank (when the ignition
is in the on position). If your vehicle
is equipped with dual fuel tanks, the
engine will draw fuel from the
passenger-side fuel tank only. With
dual fuel tanks, the vehicle will be
equipped with a fuel transfer pump system that will draw fuel from the
driver-side fuel tank and send fuel to the passenger-side fuel tank. The
passenger-side fuel tank must have fuel in it at all times otherwise the
vehicle may stall and may be difficult to re-start. The fuel gauge reads
the fuel level only from the passenger-side fuel tank.
Air pressure gauge (if equipped):
All vehicles equipped with air brakes
have a dual-pointer air gauge to
indicate the pressure in each brake
circuit. The green pointer indicates
the air pressure in the primary
system and the red pointer indicates
the air pressure in the secondary
system. When the pressure is too low
for normal brake operation (less than
60 psi [414 kPa]) and the ignition is
on:
•a warning buzzer will sound and
•a warning light will illuminate in the instrument cluster
Vehicles equipped with hydraulic brakes and an air compressor have a
single-pointer air gauge.
Note:This system doesnothave a low air pressure warning buzzer or a
low air pressure warning light.
Do not drive the vehicle when the low air pressure buzzer is
sounding or the warning light is lit. These warnings indicate
there is not enough air pressure for the brake or suspension system to
operate properly.
0 30120 90 60
150AIR
PRESSURE
PSI
Instrumentation
29

INTERIOR LAMPS
Map lamps (if equipped)
To turn on the map lamps, press the
control next to each lamp.
EXTERIOR BULBS
Checking operation of lamps, safety equipment and warning
signals
It is a good safety practice to check operation of headlamps, parking
lamps, turn signals, clearance and marker lamps, instrument panel and
control lamps each day.
Using the right bulbs
Function Number of
bulbsTrade number
Headlamps 2 4652
Front turn signal lamps 2 1157
Front sidemarker/Park lamps 2 (amber) 194
Brake/Tail/Stop/Rear turn
signal/License lamps4 2057
Back-up lamps 2 1156
Front clearance and identification
lamps5 168
Dome lamp 1 105
To replace all instrument panel lights - see your dealer
Lights
49

To lower the shoulder belt height, push the button and slide the height
adjuster down. To raise the height of the shoulder belt, slide the height
adjuster up. Pull down on the height adjuster to make sure it is locked in
place.
Position the safety belt height adjusters so that the belt rests
across the middle of your shoulder. Failure to adjust the safety
belt properly could reduce the effectiveness of the seat belt and
increase the risk of injury in a collision.
Lap belts
The front center and rear center lap belts do not adjust automatically.
The lap belt should fit snugly and as low as possible around the
hips, not across the waist.
Insert the tongue into the correct
buckle (the buckle closest to the
direction the tongue is coming
from). To lengthen the belt, turn the
tongue at a right angle to the belt
and pull across your lap until it
reaches the buckle. To tighten the
belt, pull the loose end of the belt
through the tongue until it fits snugly across the hips.
Shorten and fasten the belt when
not in use.
Safety belt warning light and indicator chime
The safety belt warning light illuminates in the instrument cluster and a
chime sounds to remind the occupants to fasten their safety belts.
Seating and safety restraints
74

Conditions of operation
If... Then...
The driver’s safety belt is not
buckled before the ignition switch
is turned to the ON position...The safety belt warning light
illuminates 1-2 minutes and the
warning chime sounds 4-8 seconds.
The driver’s safety belt is buckled
while the indicator light is
illuminated and the warning chime
is sounding...The safety belt warning light and
warning chime turn off.
The driver’s safety belt is buckled
before the ignition switch is
turned to the ON position...The safety belt warning light and
indicator chime remain off.
BeltMinder
The BeltMinder feature is a supplemental warning to the safety belt
warning function. This feature provides additional reminders to the
driver that the driver’s safety belt is unbuckled by intermittently
sounding a chime and illuminating the safety belt warning lamp in the
instrument cluster.
If... Then...
The driver’s safety belt is not
buckled before the vehicle has
reached at least 3 mph (5 km/h)
and 1-2 minutes have elapsed
since the ignition switch has been
turned to ON...The BeltMinder feature is activated -
the safety belt warning light
illuminates and the warning chime
sounds for 6 seconds every 30
seconds, repeating for approximately 5
minutes or until safety belt is buckled.
The driver’s safety belt is buckled
while the safety belt indicator light
is illuminated and the safety belt
warning chime is sounding...The BeltMinder feature will not
activate.
The driver’s safety belt is buckled
before the ignition switch is
turned to the ON position...The BeltMinder feature will not
activate.
Seating and safety restraints
75

BeltMinder activation and deactivation procedure
1. Turn the ignition switch to the RUN (or ON) position. (DO NOT
START THE ENGINE.)
2. Wait until the safety belt warning light turns off. (Approximately 1–2
minutes.)
•Steps 3–5 must be completed within 60 seconds or the procedure will
have to be repeated.
3. Buckle then unbuckle the safety belt three times, ending with the
safety belt unbuckled. This can be done before or during BeltMinder
warning activation.
4. Turn on the parklamps/headlamps, turn off the parklamps/headlamps.
5. Buckle then unbuckle the safety belt three times, ending with the
safety belt unbuckled.
•After step 5 the safety belt warning light will be turned on for three
seconds.
6. Within seven seconds of the safety belt warning light turning off,
buckle then unbuckle the safety belt.
•This will disable BeltMinder if it is currently enabled, or enable
BeltMinder if it is currently disabled.
7. Confirmation of disabling BeltMinder is provided by the safety belt
warning light flashing four times per second for three seconds.
8. Confirmation of enabling BeltMinder is provided by:
•The safety belt warning light flashing four times per second for three
seconds.
•Followed by three seconds with the safety belt warning light off.
•Once again, the safety belt warning light will flash four times per
second for three seconds.
9. After receiving confirmation, the deactivation/activation procedure is
complete.
Safety belt extension assembly
If the safety belt is too short when fully extended, there is an eight inch
(20 cm) safety belt extension assembly that can be added (part number
611C22). This assembly can be obtained from your dealer at no cost.
Use only extensions manufactured by the same supplier as the safety
belt. Manufacturer identification is located at the end of the webbing on
Seating and safety restraints
78

Hot weather operation
•Keep the engine cooling system filled with a clean, permanent coolant
solution to protect against damage from overheating.
•Fill the fuel tank at the end of daily operation to prevent condensation
in the fuel system.
•Keep external surfaces of the engine, radiator, charge air cooler, A/C
condenser and accessories clean to avoid dirt build-up.
Above normal coolant temperatures could be experienced while driving
in a transmission gear ratio which lugs the engine. To correct this
problem, engine speed should be increased by downshifting in to the
next lower gear to increase engine RPM.
Starting a turbocharged engine with the vehicle on a steep grade
When starting a diesel engine when the loaded vehicle is on a grade, the
engine RPM will start to fall slightly when the clutch is engaged; do not
disengage the clutch and try to increase engine RPM as this may damage
driveline components. The engine will recover as the vehicle begins
moving.
Engine shutdown
Allow the engine to idle for three to five minutes before shutting it
down. The larger the engine, the greater the need for this idling period.
However, do not let the engine idle for more than 10 minutes.
Engine automatic shutdown warning light or chime (if equipped)
Your vehicle may be equipped with an automatic shutdown feature that
stops the engine in the event of high coolant temperature, low engine oil
pressure or low engine coolant level. A warning light in the instrument
cluster and a warning chime will indicate high engine coolant
temperature or low engine oil pressure. If the temperature and/or
pressure becomes too high or too low, the engine will automatically shut
down.
Driving
90