2011 Chevrolet Volt Owner's Manual - Page 319

Driving and Operating Refer to the vehicle's Tire and Loading Information label for specific information about the vehicle's capacity weight and seating positions. The combined weight of the driver, passengers, and cargo should never exceed the vehicle's capacity weight. Certification Label 9-17 for the vehicle, or the Gross Axle Weight Rating (GAWR) for either the front or rear axle. Spread out heavy loads equally on both sides of the vehicle. See "Steps for Determining Correct Load Limit" earlier in this section. { WARNING Label Example A vehicle-specific Certification label is found on the center pillar (B-pillar). The label shows the gross weight capacity of the vehicle. This is the Gross Vehicle Weight Rating (GVWR) and includes the weight of the vehicle, all occupants, fuel, and cargo. Never exceed the GVWR Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). This can cause systems to break and change the way the vehicle handles. This could cause loss of control and a crash. Overloading can also shorten the life of the vehicle.