Pontiac 2004 GTO - Manual (Page 188)

Certification Label The Certification label is found on the rear edge of the
driver’s door. It tells you the gross weight capacity
of your vehicle, called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the weight of the
vehicle, all occupants, fuel and cargo. Never exceed
the GVWR for your vehicle, or the Gross Axle Weight
Rating (GAWR) for either the front or rear axle.
{ CAUTION:
Do not load your vehicle any heavier than the
GVWR, or either the maximum front or rear
GAWR. If you do, parts on your vehicle can
break, and it can change the way your vehicle
handles. These could cause you to lose
control and crash. Also, overloading can
shorten the life of your vehicle.
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