GMC 2001 Sierra 1500 Pickup Owner's Manual page 271

Adding a Snow Plow or
Similar Equipment
Before installing a snow plow on your vehicle, here are
some things you'll need to know:
NOTICE:
If your vehicle doesn't have the snow plow prep
package, adding a plow can damage your vehicle,
and the repairs wouldn't be covered by warranty.
Unless your vehicle was built to carry a snow
plow, don't add one to your vehicle.
If your vehicle has the snow plow option called
RPO VYU (snow plow prep package), then the
payload your vehicle can carry will be 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.
Q:
How do I know if my vehicle can handle a
snow plow?
A:
Some vehicles are built with a special package,
called RPO VYU (snow plow prep package).
If your vehicle has this option, you can add a
plow to it, provided certain weights, such as the
weights on the vehicle's axles and the GVW,
aren't exceeded.
Q:
How heavy can a snow plow safely be?
A:
The plow your vehicle can carry depends on many
things, such as:
D
The options your vehicle came with, and the weight
of those options,
D
The weight and number of passengers you intend
to carry,
D
The weight of items you've added to your vehicle,
like a tool box or truck cap,
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