1998 GMC Suburban Owner's Manual - Page 236

The CertificatiodTire 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 YOLIPvehicle, or the GAWR for either the front or rear axle. And, if you do have a heavy load, you should spread it out. I Using heavier suspension components to get added durability might not change your weight ratings. Ask your dealer to help you load your vehicle the right way. NOTICE: Your warranty does not cover parts or components that fail because overloading. of If you put things inside your vehicle -- like suitcases, tools, packages, or anything else -- they go as fast as the vehicle goes. If you have to stop or turn quickly, or if there is a crasl~, they.11 keep going. 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, orit can change the way your vehicle handles. These could cause to lose control. you Also, overloading can shorten thelife of your vehicle. 4-44