GMC 2011 Sierra Owner's Manual page 320

The tire and loading information
label shows the number of
occupant seating positions (A),
and the maximum vehicle
capacity weight (B) in kilograms
and pounds.
The Tire and Loading
Information label also shows the
size of the original equipment
tires (C) and the recommended
cold tire inflation pressures (D).
For more information on tires
and inflation see
and
.
There is also important loading
information on the vehicle
Certification/Tire label. It tells
you the Gross Vehicle Weight
Rating (GVWR) and the Gross
Axle Weight Rating (GAWR)
for the front and rear axles.
See Certification/Tire Label
later in this section.
Locate the statement
1.
The combined weight of
occupants and cargo should
never exceed XXX kg or
XXX lbs on your vehicle's
placard.
Determine the combined
2.
weight of the driver and
passengers that will be
riding in your vehicle.
Subtract the combined
3.
weight of the driver and
passengers from XXX kg
or XXX lbs.
The resulting figure equals
4.
the available amount of cargo
and luggage load capacity.
For example, if the XXX
amount equals 1400 lbs
and there will be five 150 lb
passengers in your vehicle,
the amount of available cargo
and luggage load capacity
is 650 lbs (1400 750
(5x150) = 650 lbs).