Chevrolet 1999 Silverado 1500 Pickup, Owner'S Manual, Page: 241 / 432

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The Cargo Weight Rating (CWR) is the maximum
weight of the load your vehicle can carry. It doesn’t
include the weight of the people inside. But, you can
figure about 150 lbs. (68 kg) for each seat.
The total cargo load must not be more than your
vehicle’s CWR.
Refer to the Truck
-
Camper Loading Information label in
glove box for dimensions A and B as shown in the
following illustration.
Use the rear edge of the load floor for measurement
purposes. The recommended location for the cargo center
of gravity is at point C for the CWR. It is the point where
the mass of a body is concentrated and, if suspended at
that point, would balance the front and rear.
Here is an example of proper truck and camper match:
A. Camper Center of Gravity
B. Recommended Center of Gravity Location Zone
The camper’s center of gravity should fall within the
center of gravity zone for your vehicle’s cargo load.
You must weigh any accessories or other equipment that
you add to your vehicle. Then, subtract this extra weight
from the CWR. This extra weight may shorten the
center of gravity zone of your vehicle. Your dealer can
help you with this.
If your slide
-
in camper and its load weighs less than the
CWR, the center of gravity zone for your vehicle may
be larger.