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should the vehicle weight ratings
per axle or combination truck and
trailer exceed the weight ratings
listed on the Safety Compliance
Certification label located on the
driver's side door.
When connecting a trailer hitch:
1. Turn off the air suspension
switch.
2. Connect the trailer.
3. Turn the air suspension back on.
Adjusting an equalizing
hitch so the rear bumper
of the vehicle is lower or higher
than it was unloaded will defeat
the function of the load
equalizing hitch and may cause
unpredictable handling.
Driving while towing a trailer
Speed control (if equipped) may
not work properly while towing on
long, steep grades.
Driving with an automatic
transmission:
²use D, 1 or 2 rather than
Dwhile towing up or down
steep hills
²anticipate stops and brake
gradually.
Towing behind another vehicle
Your vehicle can not be flat towed
with all wheels on the ground.
No neutral tow kit is available for
your vehicle.
exd_driving_trailer
exd_towing_another_vehicle
exd_servicing_while_towing
Driving
132
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Servicing while towing
If you tow a trailer for long
distances, your vehicle requires
more frequent service than a
vehicle not used for towing. Refer
to the ªService GuideºSevere
Duty Schedulefor more
information on maintenance
intervals.
Using a step bumper
The rear bumper is equipped with
an intregal hitch and requires only
a ball with a 1 inch shank
diameter. The bumper has a 1814
kg (4000 lb) trailer weight and 181
kg (400 lb) tongue weight
capability.
Use a frame mounted weight
distributing hitch for trailers over
1814 kg (4000 lb).
FUEL CONSUMPTION
Fuel economy can be improved by
avoiding:
²lack of regular, scheduled
maintenance
²excessive speed
²rapid acceleration
exd_step_bumper
com_fuel_consumption.01
Driving
133
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Air bag supplemental restraint
system ..........................................87
and child safety seats ..............88
description ................................87
disposal ......................................91
indicator light ...........................90
passenger air bag .....................89
Air cleaner filter .......................179
Air conditioning
auxiliary heater and air
conditioner ................................37
Air suspension ...........................111
Anti-theft system ........................67
Battery .......................................176
jumping a disabled battery ....151
Brakes ........................................107
adjustment ..............................107
anti-lock ...................................107
fluid, checking and adding ....162
Brake-shift interlock .................117
Break-in period .............................3
Bulbs, replacing .................198,205
headlamps ...............................199
rear lamps ...............................204
specifications ..........................205
Capacities for refilling fluids ...213,
215
Changing a tire .........................147
Cleaning your vehicle ...............206
engine compartment ..............208
fabric ........................................211
instrument panel ....................211
plastic parts ............................209
tail lamps .................................210
washing ....................................206
waxing .....................................207
wheels ......................................208
Climate control system .........27,28
air conditioning ...............32,33,34
defrosting ..................................65
heating .......................................33Compass, electronic
calibration .................................52
set zone adjustment .................52
Console, description ...................63
Controls .......................................64
Defrost
windshield .................................34
Emission control system ..........194
Engine .................................158,218
Engine block heater .................104
Engine coolant ..........................165
checking hoses .......................168
disposal ....................................167
refill capacities ........................167
Engine oil
changing oil and oil filter .......162
specifications ..........................159
Entry system
illumination ...............................54
Exhaust fumes ..........................106
Fail safe cooling ........................169
Floor mats ..............................65,66
Foglamps ..............................20,203
Four-Wheel Drive vehicles
control trac .............................119
special driving instructions ...120,
121
Fuel
calculating fuel economy .......193
improving fuel economy ........133
octane rating ...........................191
quality ......................................191
safety information relating to
automotive fuels .....................189
Fuel pump shut-off switch .......134
Gauges, Electronic ......................14
GVWR (Gross Vehicle Weight
Rating) .......................................123
Hazard flashers .........................134
Hitch ..........................................131
Identification Number, Vehicle
(VIN) ..........................................219
Index
222
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Trailer towing
calculating maximum trailer
weight ......................................127
Transfer case (see Differential
fluid) ...................................175,176
Transmission ......................114,172
Transmission control switch ......49
Trip odometer .............................17
Turn signal ..................................47
indicator lights ..........................12
Vehicle dimensions ...................218
Vehicle headlamp aiming
device (VHAD) .........................206
Ventilating your vehicle ...........105
Voltmeter (see Battery voltage
gauge) ..........................................16Warning chimes
headlamps on ............................14
key in ignition ...........................14
safety belt .................................13
Warning lights (see Lights) .8,144,
145
Windows
accessory delay .........................59
Windshield washer fluid and
wipers ........................................179
checking and adding fluid .....164
operation ..............................44,45
Wrecker towing .........................154
Index
224