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change for the life of the vehicle.
Rear axle lubricant quantities
should not need to be checked
unless a leak is suspected.
Driving on hilly or sloping
terrain
When driving on a hill, avoid
driving crosswise or turning on
steep slopes. You could lose
traction and slip sideways. Drive
straight up, straight down or avoid
the hill completely. Know the
conditions on the other side of a
hill before driving over the crest.
When climbing a steep hill, start in
a lower gear rather than
downshifting to a lower gear from
a higher gear once the ascent has
started. This reduces strain on the
engine and the possibility of
stalling.
When descending a steep hill,
avoid sudden braking. Rapid
pumping of the brake pedal will
help slow the vehicle and still
maintain steering control.
When speed control is on and you
are driving uphill, your vehicle
speed may drop considerably,
especially if you are carrying a
heavy load.
If vehicle speed drops more than
16 km/h (10 mph), the speed
control will cancel automatically.
Resume speed with accelerator
pedal.
If speed control cancels after
climbing the hill, reset speed by
pressing and holding the SET
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ACCEL button (to resume speeds
over 50 km/h (30 mph).
Automatic transmission may shift
frequently while driving up steep
grades. Eliminate frequent shifting
by shifting out of
(Overdrive)
into D (Drive).
Driving on snow and ice
A 4WD vehicle has advantages
over 2WD vehicles in snow and ice
but can skid like any other vehicle.
Avoid sudden applications of
power and quick changes of
direction on snow and ice. Apply
the accelerator slowly and steadily
when starting from a full stop.
When braking, apply the brakes as
you normally would. In order to
allow the anti-lock brake system
(ABS) to operate properly, keep
steady pressure on the brake
pedal.
Allow more stopping distance and
drive slower than usual. Consider
using one of the lower gears.
DRIVING THROUGH WATER
Do not drive quickly through
standing water, especially if the
depth is unknown. Traction or
brake capability may be limited
and if the ignition system gets wet,
your engine may stall. Water may
also enter your engine's air intake
and severely damage your engine.
If driving through deep or standing
water is unavoidable, proceed very
slowly. Never drive through water
that is higher than the bottom of
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the hubs (truck)/wheel rims (car).
Once through the water, always try
the brakes. Wet brakes do not stop
the vehicle as effectively as dry
brakes. Drying can be improved by
moving your vehicle slowly while
applying light pressure on the
brake pedal.
VEHICLE LOADING
Before loading a vehicle, familiarize
yourself with the following terms:
²Base Curb Weight: Weight of
the vehicle including any
standard equipment, fluids,
lubricants, etc. It does not
include passengers or
aftermarket equipment.
²Payload: Combined maximum
allowable weight of cargo,
passengers and optional
equipment. The payload equals
the gross vehicle weight rating
minus base curb weight.
²GVW (Gross Vehicle Weight):
Base curb weight plus payload
weight. The GVW is not a limit
or a specification.
²GVWR (Gross Vehicle Weight
Rating): Maximum total weight
of the base vehicle, passengers,
optional equipment and cargo.
The GVWR is specific to each
vehicle and is listed on the
Safety Compliance Label on the
driver's door pillar.
²GAWR (Gross Axle Weight
Rating): Carrying capacity for
each axle system. The GAWR is
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Trailer towing with your vehicle
may require the use of a trailer
tow option package.
Trailer towing puts additional loads
on your vehicle's engine,
transmission, axle, brakes, tires,
and suspension. For your safety
and to maximize vehicle
performance, be sure to use the
proper equipment while towing.
Follow these guidelines to ensure
safe towing procedure:
²Stay within your vehicle's load
limits. If exceeded, cargo should
be removed from the trailer
and/or the vehicle until all
weights are within specified
limits.
²Thoroughly prepare your vehicle
for towing. Refer toPreparing
to towin this chapter.
²Use extra caution when driving
while trailer towing. Refer to
Driving while you towin this
chapter.
²Service your vehicle more
frequently if you tow a trailer.
Refer to the severe duty
schedule in the ªService Guideº.
²Do not tow a trailer until your
vehicle has been driven at least
800 km (500 miles).
²Refer to the instructions
included with towing accessories
for the proper installation and
adjustment specifications.
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If your vehicle is equipped with
the optional heavy duty trailer tow
wiring, it is pre-wired for trailer
towing. An electrical connector is
provided under the instrument
panel for installing a
customer-supplied electric brake
controller. Another electrical
connector is provided at the hitch.
This connector provides power to
the trailer for taillamps, stop and
turn lamps, back up lamps, battery
charge, electric brakes (when a
customer provided controller is
installed) and ground. The kit
included with your vehicle
provides you with adaptors to
attach the brake controller and
convert the hitch connector for
Class I trailer usage.
Trailer towing table (with heavy
duty trailer tow option)
GCWR (Gross Combined Weight
Rating)/trailer weights
EngineRear
axle
ratioTire sizeMaximum
GCWRTrailer weight
range
(0 - maximum)
4x2
4.6L 3.3140.6 cm
(16 in)4 990 kg
(11 000 lbs.)0-2676 kg
(0-5 900 lbs.)
5.4L 3.3140.6 cm
(16 in)5 443 kg
(12 000 lbs.)0-3 039 kg
(0-6 700 lbs.)
5.4L 3.7340.6 cm
(16 in)6 123 kg
(13 500 lbs.)0-3 628 kg
(0-8 000 lbs.)
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4. Attach the trailer to the vehicle
and adjust the hitch equalizers so
that the front bumper height is
within 0±13 mm (0.5 in) of the
reference point. After proper
adjustment, the rear bumper
should be no higher than in Step 3.
5. Turn the air suspension (if
equipped) control to 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.
Safety chains
Always connect the trailer's safety
chains to the vehicle. To connect
the trailer's safety chains, cross the
chains under the trailer tongue and
allow slack for turning corners.
If you use a rental trailer, follow
the instructions that the rental
agency gives to you.
Trailer brakes
Electric brakes and manual,
automatic or surge-type brakes are
safe if installed properly and
adjusted to the manufacturer's
specifications. The trailer brakes
must meet local and Federal
regulations.
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Do not connect a trailer's
hydraulic brake system
directly to your vehicle's brake
system. Your vehicle may not
have enough braking power and
your chances of having a
collision greatly increase.
Trailer lamps
Trailer lamps are required on most
towed vehicles. Make sure your
trailer lamps conform to local and
Federal regulations. See your
dealer or trailer rental agency for
proper instructions and equipment
for hooking up trailer lamps.
Using a step bumper
The rear bumper is equipped with
an integral hitch and requires only
a ball with a 25.4 mm (one inch)
shank diameter. The bumper has a
1 814 kg (4 000 lb.) trailer weight
and 181 kg (400 lb.) tongue weight
capability.
Use a frame-mounted weight
distributing hitch for trailers over
1814 kg (4 000 lb).
Driving while you tow
Do not drive faster than 88 km/h
(55 mph) when towing a trailer.
Speed control may shut off if you
are towing on long, steep grades.
When towing a trailer:
²Use D (Drive) or a lower gear
when towing up or down steep
hills. This will eliminate
excessive downshifting and
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upshifting for optimum fuel
economy and transmission
cooling.
²Anticipate stops and brake
gradually.
Servicing after towing
If you tow a trailer for long
distances, your vehicle will require
more frequent service intervals.
Refer to the Severe Duty Schedule
in your ªService Guideº for more
information.
Towing behind another vehicle
Do not tow your vehicle behind
another vehicle, such as an RV.
Your vehicle cannot be flat towed
with all wheels on the ground.
Trailer towing tips
²Practice turning, stopping and
backing up in an area before
starting on a trip to get the feel
of the vehicle trailer
combination. When turning,
make wider turns so the trailer
wheels will clear curbs and
other obstacles.
²Allow more distance for
stopping with a trailer attached.
²The trailer tongue weight should
be 10±15% of the loaded trailer
weight.
²After you have traveled 80 km
(50 miles), thoroughly check
your hitch, electrical
connections and trailer wheel
lug nuts.
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