1997 Buick Century Owner's Manual - Page 213

Tie a red cloth to your vehicle to alertpolice that you've been stopped by the snow. Put on extra clothing orwrap 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. 'A CA"T1CY: Snow cantrap exhaust gasesunder your vehicle. This can cause deadlyCO (carbon monoxide) gas to get inside.CO could overcome you and kill you. You can't seeit or smell it, so you might not know it is in your vehicle. Clear away snow from around the base of your vehicle, especially any that is blocking your exhaust pipe. And check around again from time to time be sure snow to doesn't collect there. Open a window a little on the side of the just vehicle that's awayfrom the wind. This will help keep CO out. You can run the engine to keep warm, but be careful. 4-27