1997 Chevrolet Astro Owner's Manual - Page 202

If You're Caught in a Blizzard 0 Turn on your hazard flashers. Tie a red cloth to your vehicle to alert police that you've been stopped by the snow. 0 Put on extra clothing or wrap a blanket around you. If you have no blankets or extra clothing, make body insulators from newspapers, burlap bags, rags, floor mats -- anything you can wrap around yourself or tuck under your clothing to keep warm. If you are stopped by heavy snow, you could be i n a serious situation.You should probably stay with your vehicle unless you know for surethat you are near help and you can hike through the snow. Here are some things to do to summon help and keep yourself and your passengers safe: You can run the engine to keep warm, but be careful. 4-26