1998 Chevrolet Astro Owner's Manual - Page 210

Then, shut the engine off and close the window almost all the way to preserve the heat. Start the engine again and repeat this only when you feel really uncomfortable from the cold. But do it as little as possible. Preserve the fuel as long as you can. To help keep warm, you can get out of the vehicle and some fairly vigorous exercises do every half houror so until help comes. The Certification/Tire label is foundon the rear edge of the driver's door.The label shows the size of your original tires and the inflation pressures needed obtain to 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, cargo and tongue weight, if pulling a trailer. The Certificationnirelabel also tells you the maximum weights for the front and rear axles, called the Gross Axle Weight Rating (GAWR). To findout the actual loads on your front and rearaxles, you need to go to a weigh station and weigh your vehicle. Your dealer can help you with this. Besure to spread out your load equally on both sides ofthe centerline. Loading Your Vehicle no GAWR FRT (SEE dcVNERISMANUALFOR ADDITIONALINFORMATION. - - I- RIM COLD TIRE PRESSURE Never exceed the GVWR for your vehicle, or GAWR for either the front or rear axle. And, if you do have a heavy load,you should spread it out. The CertificatiodTire label in your vehicle will look similar to this example. 4-26