1997 GMC Suburban Owner's Manual - Page 224

Loading Your Vehicle The label shows the size of your original tires ana me inflation pressures needed to obtain the gross weight capacity of your vehicle. This is called the GVWR (Gross Vehicle Weight Rating). The GVWR includes the weight of the vehicle, all occupants, fuel and cargo. The Certificationmire label also tells you the maximum weights for the front and rear axles, called Gross Axle Weight Rating (GAWR). To find out the actual loads on your front and rear axles, you need to go to a weigh station and weigh your vehicle. Your dealer can help you with this. Be sure to spread out your load equally on both sides of the centerline. Never exceed the GVWR for your vehicle, or the GAWR for eitherthe front or rear axle. 4 The Certificationflire label is found on the rear edge of the driver's door. And, if you do have a heavy load, you should spread it out. 4-42