Page 118 of 675
• Use the appropriate transmission gear to prevent
engine lugging.
• Observe vehicle oil pressure and temperature indica-
tors.
• Check the coolant and oil levels frequently.
• Vary throttle position at highway speeds when carry-
ing or towing significant weight.
NOTE: Light duty operation such as light trailer towing
or no load operation will extend the time before the
engine is at full efficiency. Reduced fuel economy and
power may be seen at this time.
For additional vehicle break-in requirements, refer to
“Trailer Towing” in “Starting and Operating” of the
Owner ’s Manual. Because of the construction of the Cummins turbo-
charged diesel engine, engine run-in is enhanced by
loaded operating conditions which allow the engine
parts to achieve final finish and fit during the first 6,000
miles (10 000 km).
SAFETY TIPS
Transporting Passengers
NEVER TRANSPORT PASSENGERS IN THE CARGO
AREA.116 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
Page 237 of 675
CAUTION!Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on the “H”, turn the engine off immediately
and call an authorized dealer for service. WARNING!A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer
for service if your vehicle overheats. If you decide to
look under the hood yourself, see “Maintaining Your
Vehicle”. Follow the warnings under the Cooling
System Pressure Cap paragraph. 4UNDERSTANDING YOUR INSTRUMENT PANEL 235
Page 239 of 675

1. Tachometer
• Indicates the engine speed in revolutions per minute
(RPM x 1000).
2. Voltmeter
• When the engine is running, the gauge indicates the
electrical system voltage. The pointer should stay
within the normal range if the battery is charged. If
the pointer moves to either extreme left or right and
remains there during normal driving, the electrical
system should be serviced.
NOTE: The voltmeter may show a gauge fluctuation at
various engine temperatures. This cycling operation is
caused by the post-heat cycle of the intake manifold
heater system. The number of cycles and the length of the
cycling operation is controlled by the engine control
module. Post-heat operation can run for several minutes,
and then the electrical system and voltmeter needle will
stabilize. 3. Oil Pressure Gauge
• The pointer should always indicate some oil pres-
sure when the engine is running. A continuous high
or low reading under normal driving conditions may
indicate a lubrication system malfunction. Immedi-
ate service should be obtained from an authorized
dealer.
4. Speedometer
• Indicates vehicle speed.
5. Fuel Gauge
• The pointer shows the level of fuel in the fuel tank
when the ignition switch is in the ON/RUN position.
• The fuel pump arrow symbol points to the
side of the vehicle where the fuel door is located. 4UNDERSTANDING YOUR INSTRUMENT PANEL 237
Page 240 of 675

6. Driver Information Display (DID)
• When the appropriate conditions exist, this display
shows the Driver Information Display (DID) mes-
sages. Refer to “Driver Information Display (DID)”
in “Understanding Your Instrument Panel” for fur-
ther information.
7. Temperature Gauge
• The temperature gauge shows engine coolant tem-
perature. Any reading within the normal range indi-
cates that the engine cooling system is operating
satisfactorily.
• The gauge pointer will likely indicate a higher tem-
perature when driving in hot weather or up moun-
tain grades. It should not be allowed to exceed the
upper limits of the normal operating range. CAUTION!Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on the “H”, turn the engine off immediately
and call an authorized dealer for service.
WARNING!A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer
for service if your vehicle overheats. If you decide to
look under the hood yourself, see “Maintaining Your
Vehicle”. Follow the warnings under the Cooling
System Pressure Cap paragraph.238 UNDERSTANDING YOUR INSTRUMENT PANEL
Page 248 of 675
Oil Pressure Warning Light
Red Telltale
Light What It Means
Oil Pressure Warning Light
This light indicates low engine oil pressure. If the light turns on while driving, stop the ve-
hicle and shut off the engine as soon as possible. A chime will sound when this light turns
on.
Do not operate the vehicle until the cause is corrected. This light does not indicate how
much oil is in the engine. The engine oil level must be checked under the hood.246 UNDERSTANDING YOUR INSTRUMENT PANEL
Page 274 of 675

the EVIC’s compass/outside temp line. Examples of this
message type are “Right Front Turn Signal Lamp Out”
and “Low Tire Pressure.”
• Unstored Messages
This message type is displayed indefinitely or until the
condition that activated the message is cleared. Examples
of this message type are “Turn Signal On” (if a turn signal
is left on) and “Lights On” (if driver leaves the vehicle).
• Unstored Messages Until RUN
These messages deal primarily with the Remote Start
feature. This message type is displayed until the ignition
is in the RUN state. Examples of this message type are
“Remote Start Aborted - Door Ajar” and “Press Brake
Pedal and Push Button to Start.”
• Five Second Unstored Messages
When the appropriate conditions occur, this type of
message takes control of the main display area for five seconds and then returns to the previous screen. An
example of this message type is “Automatic High Beams
On.”
Oil Life Reset
Your vehicle is equipped with an engine oil change
indicator system. The “Oil Change Required” message
will display for approximately 10 seconds after a single
chime has sounded, to indicate the next scheduled oil
change interval. The engine oil change indicator system
is duty cycle based, which means the engine oil change
interval may fluctuate, dependent upon your personal
driving style.
NOTE: Use the steering wheel controls for the following
procedure(s)272 UNDERSTANDING YOUR INSTRUMENT PANEL
Page 276 of 675
NOTE: If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary, repeat this procedure.
EVIC Messages
• Front Seatbelts Unbuckled
• Driver Seatbelt Unbuckled
• Passenger Seatbelt Unbuckled
• Service Airbag System
• Traction Control Off
• Washer Fluid Low
• Oil Pressure Low
• Oil Change Due
• Fuel Low
• Service Antilock Brake System • Service Electronic Throttle Control
• Service Power Steering
• Cruise Off
• Cruise Ready
• Cruise Set To XXX MPH
• Tire Pressure Screen With Low Tire(s) “Inflate Tire to
XX”
• Tire Pressure Information System (TPIS)
• Service Tire Pressure System
• Parking Brake Engaged
• Brake Fluid Low
• Service Electronic Braking System
• Engine Temperature Hot274 UNDERSTANDING YOUR INSTRUMENT PANEL
Page 279 of 675

Vehicle Info Menu Item
Push and release the UP or DOWN arrow button
until the Vehicle Info menu item is highlighted in the
EVIC. Push and release the RIGHT arrow button
to enter the submenus items of Vehicle Info. follow the
directional prompts to access or reset any of the
following Vehicle Info submenu items:
• Tire Pressure
• Coolant Temp
• Transmission Temp (Automatic only)
• Oil Temp
• Oil Pressure
• Oil Life
• Battery Voltage
• Gauge Summary • Engine Hours
Fuel Economy Menu Item
Push and release the UP or DOWN arrow button
until the Fuel Economy menu item is highlighted.
Push and Hold the RIGHT arrow button to reset
Average Fuel Economy.
• Current Fuel Economy Gauge
• Average Fuel Economy value
• Range to Empty
• Dual Fuel Tank levels — If Equipped
• Push and release the RIGHT arrow button to
display the Fuel Tank Level submenu item. Your
EVIC will display the fuel levels of the Front and
Rear fuel tanks. The fuel is automatically trans-
ferred from the Rear tank to the Front tank based on 4UNDERSTANDING YOUR INSTRUMENT PANEL 277