GMC 2010 Sierra - Manual (Page 422)

Refer to the Truck-Camper Loading Information
label in the 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
When the truck is used to carry a slide‐in
camper, the total cargo load of the truck consists
of the manufacturer's camper weight figure, the
weight of installed additional camper equipment
not included in the manufacturer's camper weight
5-46