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capability, with or without a trailer. Properly loading your vehicle will
provide maximum return of vehicle design performance. Before loading
your vehicle, familiarize yourself with the following terms for determining
your vehicle’s weight ratings, with or without a trailer, from the vehicle’s
Safety Certification Label and Tire Label:
Base Curb Weight–is the weight of the vehicle including a full tank of
fuel and all standard equipment. It does not include passengers, cargo, or
optional equipment.
Vehicle Curb Weight–is the weight of your new vehicle when you
picked it up from your dealer plus any aftermarket equipment.
Cargo Weight–includes all weight added to the Base Curb Weight,
including cargo and optional equipment. When towing, trailer tongue load
or king pin weight is also part of cargo weight.
GAW (Gross Axle Weight)–is the total weight placed on each axle
(front and rear)–including vehicle curb weight and all payload.
GAWR (Gross Axle Weight Rating)–is the maximum allowable
weight that can be carried by a single axle (front or rear).These
numbers are shown on the Safety Compliance Certification Label
located on the driver’s door or B-Pillar. The total load on each
axle must never exceed its GAWR.
Exceeding the Safety Certification Label axle weight rating limits
could result in substandard vehicle handling or performance,
engine, transmission and/or structural damage, serious damage to the
vehicle, loss of control and personal injury.
Note:For trailer towing information refer toTrailer towingfound in
this chapter or theRV and Trailer Towing Guideprovided by your
dealership.
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GVW (Gross Vehicle Weight)–is the Vehicle Curb Weight + cargo +
passengers.
GVWR (Gross Vehicle Weight
Rating)–is the maximum
allowable weight of the fully loaded
vehicle (including all options,
equipment, passengers and cargo).
The GVWR is shown on the
Safety Compliance Certification
Label located on the driver’s
door or B-Pillar. The GVW must
never exceed the GVWR.
Exceeding the Safety Certification Label vehicle weight rating
limits could result in substandard vehicle handling or
performance, engine, transmission and/or structural damage, serious
damage to the vehicle, loss of control and personal injury.
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GCW (Gross Combined Weight)–is the weight of the loaded vehicle
(GVW) plus the weight of the fully loaded trailer.
GCWR (Gross Combined Weight Rating)–is the maximum allowable
weight of the vehicle and the loaded trailer–including all cargo and
passengers–that the vehicle can handle without risking damage.
(Important: The towing vehicle’s braking system is rated for operation at
GVWR, not at GCWR. Separate functional brakes should be used for safe
control of towed vehicles and for trailers where the GCW of the towing
vehicle plus the trailer exceed the GVWR of the towing vehicle.The
GCW must never exceed the GCWR.
Maximum Loaded Trailer Weight–is the highest possible weight of a
fully loaded trailer the vehicle can tow. It assumes a vehicle with only
mandatory options, no cargo (internal or external), a tongue load of
10–15% (conventional trailer) or king pin weight of 15–25% (fifth wheel
trailer), and driver only (150 lbs [68 kg]).Consult your dealership (or
theRV and Trailer Towing Guideprovided by your dealership) for
more detailed information.
Do not exceed the GVWR or the GAWR specified on the
certification label.
Do not use replacement tires with lower load carrying capacities
than the originals because they may lower the vehicle’s GVWR
and GAWR limitations. Replacement tires with a higher limit than the
originals do not increase the GVWR and GAWR limitations.
Exceeding any vehicle weight rating limitation could result in
serious damage to the vehicle and/or personal injury.
Steps for determining the correct load limit:
1. Locate the statement“The combined weight of occupants and cargo
should never exceed XXX pounds”on your vehicle’s placard.
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2. Determine the combined weight of the driver and passengers that will
be riding in your vehicle.
3. Subtract the combined weight of the driver and passengers from XXX
kilograms or XXX pounds.
4. The resulting figure equals the available amount of cargo and luggage
load capacity. For example, if the “XXX” amount equals 1,400 lb. and there
will be five 150 lb. passengers in your vehicle, the amount of available
cargo and luggage load capacity is 650 lb. (1400–750 (5 x 150) = 650 lb.).
5. Determine the combined weight of luggage and cargo being loaded on
the vehicle. That weight may not safely exceed the available cargo and
luggage load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be
transferred to your vehicle. Consult this manual to determine how this
reduces the available cargo and luggage load capacity of your vehicle.
The following gives you a few more examples on how to calculate the
available amount of cargo and luggage load capacity:
•
Another example for your vehicle with 1400 pounds of cargo and
luggage capacity. You decide to go golfing. You and your friends average
220 pounds each and the golf bags weigh approximately 30 pounds each.
Is there enough load capacity to carry you, 4 of your friends and all the
golf bags? The calculation would be: 1400 – (5 x 220) - (5 x 30) = 1400
– 1100 – 150 = 150 pounds; yes, you have enough load capacity in your
vehicle to transport 4 of your friends and golf bags.
•A final example for your vehicle with 1400 pounds of cargo and
luggage capacity. You and one of your friends decide to pick up
cement from the local home improvement store to finish that patio
you have planning for the past 2 years. Measuring the inside of the
vehicle with the rear seat folded down, you have room for 12–100
pound bags of cement. Do you have enough load capacity to transport
the cement to your home? If you and your friend each wighed 220
pounds, the calculation would be: 1400 – (2 x 220) - (12 x 100) =
1400 – 440 – 1200 = –40 pounds; no, you do not have enough cargo
capacity to carry that much weight. You will need to reduce the load
weight by at least 240 pounds. If you remove 3–100 pound cement
bags, then the load calculation would be:
1400 – (2 x 220) - (9 x 100) = 1400 – 440 – 900 = 60 pounds; now you
have the load capacity to transport the cement and your friend home.
The above calculations also assume that the loads are positioned in your
vehicle in a manner that does not overload the Front or the Rear Gross
Axle Weight Rating specified for your vehicle on the Certification label
found on the driver’s door.
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TRAILER TOWING
Your vehicle is capable either of towing Class I trailers or up to Class II
trailers when equipped with the optional trailer tow package.
If your vehicle does not have the optional trailer tow package your
vehicle is partially prepped for trailer tow lamp wiring but you will also
need to install electrical kit 3F2Z-15A416-A. This kit contains fuses and
relays to isolate the vehicle lighting circuitry from the trailer lighting and
an adapter wiring harness containing the standard 4-pin trailer plug.
Refer to theTrailer lamps section in this chapter for additional
information. Do not tow above 2,000 lbs. (907 kg) without the
manufacturer-installed trailer tow package.
If your vehicle has the optional trailer tow package it comes with heavy
duty cooling fans, auxiliary transmission fluid cooler, an auxiliary engine
oil cooler (4.2L engine only), heavy duty battery, trailer tow wiring
(including fuses and relays to isolate the vehicle lighting circuitry from
the trailer lighting) and a kit (in a cardboard box) that includes an
adapter wiring harness that contains the standard 4-pin trailer plug.
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:
• Stay 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.
• Thoroughly prepare your vehicle for towing. Refer to Preparing to
tow in this chapter.
• Use extra caution when driving while trailer towing. Refer to Driving
while you tow in this chapter.
• Service your vehicle more frequently if you tow a trailer. Refer to
Special Operating Conditions in the scheduled maintenance guide.
•
Do not tow a trailer until your vehicle has been driven at least 500 miles
(800 km).
• Refer to the instructions included with towing accessories for the
proper installation and adjustment specifications.
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Vehicle towing capability/Trailer hitchrequirement Trailer
Model/
Engine GCWR - lbs
(kg) Hitch type
required Trailer Weight
range - lbs (kg) Tongue load
Van, 3.9L 7000 (3175) Class I
Non-Equalizing
Weight Carrying 0-2000
(0 –907) 10
–15% of TW
(200 lbs. [91
kg] maximum)
Wagon, 3.9L
Wagon, 4.2L 7200 (3266)
Wagon, 3.9L
with trailertow option 8500 (3856)
Class II
Non-Equalizing
Weight Carrying 0
–3500
(0-1588) 10
–15% of TW
(350 lbs. [159
kg] maximum)
Wagon, 4.2L
with trailertow option 8700 (3946)
Do not exceed the maximum loads listed on the Safety Compliance
Certification label. For load specification terms found on the label, refer
to
Vehicle loading in this chapter. Remember to figure in the tongue
load of your loaded trailer when figuring the total weight.
Towing trailers beyond the maximum recommended gross trailer
weight exceeds the limit of the vehicle and could result in
engine damage, transmission damage, structural damage, loss of control
and personal injury.
Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use hitches that clamp onto the vehicle bumper. Use a load
carrying hitch that does not exceed your vehicle ’s capability. See the
Tongue Load section in the trailer towing chart earlier in this section for
range details on a specific trailer load.
Safety chains
Always connect the trailer ’s safety chains to the hook retainers on the
hitch. 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.
Do not attach safety chains to the bumper.
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Trailer brakes
Be sure your trailer conforms to all applicable local and Federal
Regulations regarding trailer braking. If your trailer is equipped with
electronically controlled brakes you will need to have an electronic brake
controller with associated wiring installed to your vehicle by a qualified
technician.
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.
The braking system of the tow vehicle is rated for operation at the
GVWR not GCWR.
Trailer lamps
Trailer lamps are required on most towed vehicles. Make sure all running
lights, brake lights, turn signals and hazard lights are working.
Do not splice into the vehicle lamp wiring for trailer lamps. Your
vehicle uses an advanced electronic module to control and
monitor your vehicle lamps. Splicing into the wiring or attaching
wiring to the vehicle bulbs may DISABLE the rear vehicle lamps
or cause them not to function properly. Your lamp outage feature
may also be disabled or provide incorrect information.
See your dealer or trailer rental agency for proper instructions and
equipment for hooking up trailer lamps.
Driving while you tow
When towing a trailer:
• Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
• Consult your local motor vehicle speed regulations for towing a trailer.
• To eliminate excessive shifting, use a lower gear. This will also assist
in transmission cooling. (For additional information, refer to the
Understanding the positions of the 4–speed automatic
transmission section in this chapter.
• Anticipate stops and brake gradually.
• Do not exceed the GCWR rating or transmission damage may occur.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to your Scheduled Maintenance Guide
for more information.
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Trailer towing tips
•Practice turning, stopping and backing up 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.
• Allow more distance for stopping with a trailer attached.
• If you are driving down a long or steep hill, shift to a lower gear. Do
not apply the brakes continuously, as they may overheat and become
less effective.
• The trailer tongue weight should be 10 –15% of the loaded trailer
weight.
• After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
• To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park).
• Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer ’s wheels.
RECREATIONAL TOWING
Follow these guidelines for your specific powertrain combination to tow
your vehicle with all four wheels on the ground (such as behind a
recreational vehicle).
These guidelines are designed to ensure that your transmission is not
damaged due to insufficient lubrication.
All Front Wheel Drive (FWD) vehicles:
It is not recommended to tow front wheel drive vehicles with the front
drive wheels on the ground. It is recommended to tow your vehicle with
the drive wheels on a dolly or two wheel car hauling trailer.
In case of a roadside emergency with a disabled vehicle (without access
to wheel dollies, car hauling trailer or flatbed transport vehicle) your
vehicle can be flat towed (all wheels on the ground) under the following
conditions:
• Place the transmission in N (Neutral).
• Maximum speed is 35 mph (56 km/h).
• Maximum distance is 50 miles (80 km).
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