GMC 2001 C3 Owner's Manual page 229

Truck-Camper Loading Information
This label is inside your glove box. It will tell you if
your vehicle can carry a slide
load your vehicle can carry, and how to correctly spread
out your load. Also, it will help you match the right
-
slide in camper to your vehicle.
-
When you carry a slide in camper, the total cargo load
of your vehicle is the weight of the camper, plus
D
everything else added to the camper after it left
the factory,
D
everything in the camper and
D
all the people inside.
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.
4-44
-
in camper, how much of a
-
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.