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at the top of the snowflake button shows that the air
conditioning is on. Press the button a second time to turn
the air conditioning off.
Slight changes in engine speed or power may be noticed
when the air conditioning compressor is on. This is a
normal occurrence as the compressor will cycle on and
off to maintain comfort and increase fuel economy.
The mode control (at the right of the
control panel) can be set in any of the
following positions:
NOTE:To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots.Recirculation Modes (Panel or Bi-Level )
Select the recirculation modes when
the outside air contains dust, odors,
high humidity, or if rapid cooling is
desired. This feature allows for recir-
culation of interior air only. Air flows
through either the panel outlets or
both the panel and floor outlets, to-
gether, depending wich recirculation mode is selected.
Panel (Fresh Air Modes)
Outside air flows through the outlets located in the
instrument panel.
Bi-Level
Outside air flows through the outlets located in the
instrument panel and at the floor.
Floor
Outside air flows primarily through the floor out-
lets located under the instrument panel.
Mode Control
176 INSTRUMENT PANEL AND CONTROLS
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Temperature Control
The rotary knob at the center
of the control panel controls
the temperature of the inte-
rior air. You can choose your
degree of comfort by rotating
the knob. The coldest tem-
perature setting is to the ex-
treme left (blue region) and
the warmest setting is to the
extreme right (red region) of
the rotation.
Circulation
The cab is designed with features to promote outside air
circulation. There are grilles in the cab back panel. These
are air exhausters that provide the means for regular
exchange of cab air.Side window demisters direct air flow specifically to the
window glass to help prevent interior fogging of the
glass. They are located in the extreme outside upper
edges of the instrument panel. The demisters also pro-
vide extra air ducts for circulation. They are in operation
whenever the Floor, Mix, Defrost, or Bi-Level modes are
in use.
NOTE:When you turn off the engine you may hear a
hissing sound from under the hood for a short period of
time. This is a normal condition that occurs if the air
conditioning system has been on. It is not an indication of
a problem with the air conditioning system.Operating Tips
Fast Cooldown
For a fast cooldown, open the windows and turn the
blower fan rotary knob to the extreme right position, turn
the mode control to the panel fresh position, press the
snowflake button to turn on the air conditioning, and
178 INSTRUMENT PANEL AND CONTROLS
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Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50%
concentration of engine coolant to distilled water is
recommended. See “Cooling System” in the Maintaining
Your Vehicle section of your Owner’s Manual.
When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation isencountered, operate the transmission in a lower gear.
When stopped in heavy traffic, it may be necessary to
shift into NEUTRAL and depress the accelerator slightly
for fast idle operation.
Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other obstruc-
tions. This will help prevent snow going into the ducts.
180 INSTRUMENT PANEL AND CONTROLS
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STARTING AND OPERATING
CONTENTS
Starting Procedures.....................187
▫Manual Transmission..................187
▫Automatic Transmission................187
▫Normal Starting......................188
▫If Engine Fails To Start.................188
▫After Starting........................189
Engine Block Heater — If Equipped.........189
Automatic Transmission..................190
▫Brake/Transmission Interlock System.......191▫Automatic Transmission................191
Manual Transmission....................196
▫Recommended Shift Speeds..............197
▫Downshifting........................198
Four-Wheel Drive Operation...............199
▫NV233/243 GII Transfer Case Operating
Information/Precautions................199
▫Shifting Procedure - NV233/243
Transfer Case........................202
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Page 185 of 400

▫Alignment And Balance.................234
Supplemental Tire Pressure Information – If
Equipped............................235
Tire Chains...........................235
Snow Tires...........................237
Tire Rotation Recommendations............237
Fuel Requirements......................238
▫Reformulated Gasoline.................239
▫Gasoline/Oxygenate Blends..............239
▫MMT In Gasoline.....................240
▫Materials Added To Fuel................241
▫Fuel System Cautions..................241
▫Carbon Monoxide Warnings..............242Adding Fuel..........................243
▫Fuel Filler Cap (Gas Cap)...............244
Flexible Fuel— If Equipped................245
▫E-85 General Information................245
▫Ethanol Fuel (E-85)....................245
▫Fuel Requirements....................245
▫Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) And Gasoline Vehicles.............246
▫Starting............................246
▫Cruising Range.......................247
▫Replacement Parts.....................247
▫Maintenance.........................247
Vehicle Loading........................247
STARTING AND OPERATING 185
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Page 187 of 400

STARTING PROCEDURES
The starter should not be operated for more than 15
second intervals. Waiting a few seconds between such
intervals will protect the starter from overheating.
WARNING!
Be sure to turn off the engine if you want to rest or
sleep in your car. Accidents can be caused by inad-
vertently moving the gear selection lever or by
pressing the accelerator pedal. This may cause exces-
sive heat in the exhaust system, resulting in over-
heating and vehicle fire which may cause serious or
fatal injuries.
WARNING!
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
Manual Transmission
Apply the parking brake, place the gearshift control lever
in NEUTRAL and depress clutch pedal to the floor before
starting the vehicle. This vehicle is equipped with a
clutch interlocking ignition system. It will not start unless
the clutch is depressed.
Automatic Transmission
Start the engine with the shift lever in NEUTRAL or
PARK position. Apply the brake before shifting to any
driving range.
STARTING AND OPERATING 187
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Normal Starting
Normal starting of either a warm or cold engine is
obtained without pumping or depressing the accelerator
pedal. Turn the key to the START position and release
when the engine starts. If the engine fails to start within
10 seconds, turn the key to the OFF position, wait 5
seconds, then repeat the starting procedure.
NOTE: This vehicle is equipped with a transmission
shift interlocking system. The brake pedal must be
depressed to shift out of Park (P).
If Engine Fails To Start
If the engine fails to start after you have followed the
normal starting procedure, it may be flooded. Push the
accelerator pedal all the way to the floor and hold it there
while cranking the engine. This should clear any excess
fuel in case the engine is flooded.
CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.
WARNING!
Never pour fuel or other flammable liquids into the
throttle body air inlet opening in an attempt to start
the vehicle. This could result in a flash fire causing
serious personal injury.
188 STARTING AND OPERATING
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WARNING!
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the
engine has started, ignite and damage the converter
and vehicle. If the vehicle has a discharged battery,
booster cables may be used to obtain a start from a
booster battery or the battery in another vehicle. This
type of start can be dangerous if done improperly.
See section 6 of this manual for the proper jump
starting procedures and follow them carefully.
If the engine has been flooded, it may start to run, but not
have enough power to continue running when the key isreleased. If this occurs, continue cranking with the accel-
erator pedal pushed all the way to the floor. Release the
accelerator pedal and the key once the engine is running
smoothly.
If the engine shows no sign of starting after two 15
second periods of cranking with the accelerator pedal
held to the floor, the normal starting procedure should be
repeated.
After Starting
The idle speed is automatically controlled and will de-
crease as the engine warms up.
Engine Block Heater — If Equipped
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the cord
to a standard 110-115 volt AC electrical outlet with a
grounded, three wire extension cord.
STARTING AND OPERATING 189
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