CHEVROLET 2010 Silverado - Manual (Page 405)

. The weight of items added to the vehicle, like a
tool box or truck cap.
. The total weight of any additional cargo you intend
to carry.
Say, for example, you have a 318 kg (700 lb) snow plow.
The total weight of all occupants and cargo inside the
cab should not exceed 135 kg (300 lb). This means that
you may only be able to carry one passenger. But, even
this may be too much if you have got other equipment
already adding to the weight of the vehicle.
Here are some guidelines for safely carrying a snow
plow on the vehicle:
. Make sure the weight on the front and rear axles
does not exceed the axle rating for each.
. For the front axle, if more cargo or passengers
must be carried, appropriate counter ballast must
be installed rear of the rear axle. Counter ballast
must be properly secured so it will not move during
driving.
. Follow the snow plow manufacturer's
recommendations regarding rear ballast. Rear
ballast may be required to ensure a proper front
and rear weight distribution ratio, even though the
actual weight at the front axle may be less than the
front axle rating.
. The snow plow manufacturer or installer can assist
you in determining the amount of rear ballast
required, to help make sure the snowplow/vehicle
combination does not exceed the GVW rating, the
front and rear axle ratings, and the front and rear
weight distribution ratio.
. The total vehicle must not exceed the GVW rating.
Front axle reserve capacity is the difference between
your the Gross Axle Weight Rating (GAWR) and the
front axle weight of the vehicle with full fuel and
passengers. Basically, it is the amount of weight that
can be added to the front axle before reaching the
front GAWR.
The front axle reserve capacity for the vehicle can be
found in the lower right corner of the Certification/Tire
label, as shown.
United States Canada
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