Global Machinery Company Sierra 1999 - Manual (Page 237)

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NOTICE:
Some vehicles may be equipped with RPO VYU
(snow plow prep package). With this option, the
payload your vehicle can carry is reduced when a
snow plow is installed. Your vehicle can be
damaged if either the front or rear axle ratings,
or the GVW are exceeded.
As a general guideline, with a 650 lb. (295 kg)
snow plow, the weight of the occupants and cargo
must not exceed 300 lb. (135 kg). However, this
may depend on the vehicle’s option content.
Therefore, to help avoid vehicle damage:
D Make sure the weight on the front and
rear axles does not exceed their respective
axle ratings.
NOTICE: (Continued)
NOTICE: (Continued)
D For the front axle, if more cargo or
passengers need to be carried, appropriate
counter ballast must be installed rear of the
rear axle and properly secured.
D Total vehicle weight must not exceed the
GVW rating.
D See your dealer for advice and information
about using a snow plow on your vehicle.
CAUTION:
Do not load your vehicle any heavier than the
GVWR, or either the maximum front or rear
GAWR. If you do, parts on your vehicle can
break, and it can change the way your vehicle
handles. These could cause you to lose control
and crash. Also, overloading can shorten the life
of your vehicle.