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Maximum Gross Vehicle Weight
(GVW)/maximum Gross Axle Weight
(GAW)
The GVW of the towing vehicle must not exceed
the Gross Vehicle Weight Rating (GVWR)
shown on the F.M.V.S.S./C.M.V.S.S. certification
label. The GVW equals the combined weight of
the unloaded vehicle, passengers, luggage,
hitch, trailer tongue load and any other optional
equipment. In addition, front or rear GAW must
not exceed the Gross Axle Weight Rating
(GAWR) shown on the F.M.V.S.S./C.M.V.S.S.
certification label.Towing capacities are calculated assuming a
base vehicle with driver and any options required
to achieve the rating. Additional passengers,
cargo and/or optional equipment, such as the
trailer hitch, will add weight to the vehicle and
reduce your vehicle’s maximum towing capacity
and trailer tongue load.
The vehicle and trailer need to be weighed to
confirm the vehicle is within the GVWR, Front
GAWR, Rear GAWR, Gross Combined Weight
Rating (GCWR) and Towing capacity.
All vehicle and trailer weights can be measured
using platform type scales commonly found at
truck stops, highway weigh stations, building
supply centers or salvage yards.
To determine the available payload capacity for
tongue/king pin load, use the following proce-
dure.
1. Locate the GVWR on the F.M.V.S.S./ C.M.V.S.S. certification label.
2. Weigh your vehicle on the scale with all of the passengers and cargo that are normally
in the vehicle when towing a trailer.
3. Subtract the actual vehicle weight from the GVWR. The remaining amount is the avail-
able maximum tongue/king pin load. To determine the available towing capacity, use
the following procedure.
1. Find the GCWR for your vehicle on the Towing Load/Specification chart found
later in this section.
2. Subtract the actual vehicle weight from the GCWR. The remaining amount is the avail-
able maximum towing capacity.
To determine the Gross Trailer Weight, weigh
your trailer on a scale with all equipment and
cargo, that are normally in the trailer when it is
towed. Make sure the Gross trailer weight is not
more than the Gross Trailer Weight Rating shown
on the trailer and is not more than the calculated
available maximum towing capacity.
Also weigh the front and rear axles on the scale to
make sure the Front Gross Axle Weight and Rear
Gross Axle Weight are not more than Front
Gross Axle Weight and Rear Gross Axle Weight
on the F.M.V.S.S./C.M.V.S.S. certification label.
The cargo in the trailer and vehicle may need to
be moved or removed to meet the specified rat-
ings.
Example: ● Gross Vehicle Weight (GVW) as weighed
on a scale - including passengers, cargo and
hitch - 6,200 lb. (2812 kg) .
Page 378 of 407
●Gross Vehicle Weight Rating (GVWR) from
F.M.V.S.S./C.M.V.S.S. certification label -
7,100 lb. (3221 kg) .
● Gross Combined Weight Rating (GCWR)
from “Towing Load/Specification chart -
15,100 lb. (6849 kg) .
● Maximum Trailer towing capacity from “Tow-
ing Load/Specification chart - 9,200 lb.
(4173 kg) .
Page 385 of 407

Sway control device
Sudden maneuvers, wind gusts, and buffeting
caused by other vehicles can affect trailer han-
dling. Sway control devices may be used to help
control these affects. If you choose to use one,
contact a reputable trailer hitch supplier to make
sure the sway control device will work with the
vehicle, hitch, trailer and the trailer’s brake sys-
tem. Follow the instructions provided by the
manufacturer for installing and using the sway
control device.
Class I hitch
Class I trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 2,000 lb (909 kg) .
Class II hitch
Class II trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 3,500 lb (1,510 kg) .
Class III hitch
Class III trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 5,000 lb (2,272 kg) .
Class IV hitch
Class IV trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 10,000 lb (4,545 kg) . A
weight distributing hitch should be used to tow
trailers that weigh over 5,000 lb (2,272 kg) .
Your vehicle may be equipped with Class IV
trailer hitch equipment that has a 10,000 lb
(4,545 kg) maximum weight rating, but your ve-
hicle is only capable of towing the maximum
trailer weights shown in the “Towing
Load/Specification” chart earlier in this section.
5th wheel/gooseneck
A 5th wheel or gooseneck trailer can be towed by
installing a 5th wheel or gooseneck trailer hitch.
These types of hitches are mounted in the bed of
the pick-up. A professional trailer equipment sup-
plier should install these hitches as it is very
important to mount the hitch correctly to distrib-
ute the king pin weight for the proper load carry-
ing and sway control performance.
The king pin weight should be 15 to 25 percent of
the fully loaded trailer. Make sure the king pin
weight does not cause the gross vehicle weight
to exceed the Gross Maximum Weight Rating or
the rear axle weight to exceed the Rear Gross
Axle Weight rating, see “Maximum load limits”
earlier in this section.The weight of the trailer should not exceed the
maximum towing capacity for the vehicle, see
“Towing Load/Specification” chart earlier in this
section.
Make sure the trailer design allows for the correct
vehicle to trailer clearances before purchasing a
5th wheel trailer.