GMC 2007 Yukon XL Owner's Manual page 397

Here are some guidelines for safely carrying a
snow plow on your 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 your
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.
Q:
What is front axle reserve capacity, and
how do I calculate it?
A:
Front axle reserve capacity is the difference
between your front gross axle weight rating
(GAWR) and the front axle weight of your
vehicle with full fuel and passengers. Basically,
it is the amount of weight you can add to
your front axle before reaching your
front GAWR.
The front axle reserve capacity for your vehicle
can be found in the lower right corner of the
Certification/Tire label, as shown.
United States Canada
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