Pontiac G3 2009 Owner's Manual page 197

There is also important loading information on the
Certification label. See "Certification Label" later in
this section.
Steps for Determining Correct Load Limit
Locate the "Maximum Load" amount.
1.
Determine the combined weight of the driver
2.
and passengers that will be riding in your
vehicle.
Subtract the combined weight of the driver
3.
and passengers from the Maximum Load
amount.
The resulting figure equals the available
4.
amount of cargo and luggage load capacity.
For example, if the Maximum Load amount
equals 1400 lbs (635 kg) and there will be
five 150 lb (68 kg) passengers in your vehicle,
the amount of available cargo and luggage
load capacity is 650 lbs (295 kg).
Determine the combined weight of luggage
5.
and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in Step 4.
If your vehicle will be towing a trailer, the load
6.
from your trailer will be transferred to your
vehicle. Consult this manual to determine how
this reduces the available cargo and luggage
load capacity of your vehicle.
Your vehicle is not designed nor intended to tow a
trailer.
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