1996 GMC Suburban Owner's Manual - Page 200

Tie a red cloth to your vehicle to alert police 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. --YOU run the engine tokeep warm, but be careful. can -= Snow can trap exhaust gases under your vehicle. CO This can cause deadly (carbon monoxide) gas to get inside. CO could overcome you and kill you. You can't see it or smell so you might not it, know it isin your vehicle. Clear away snow from around the base your vehicle, especiallyany of that is blocking your exhaust And check pipe. around again from time to time to be sure snow doesn't collect there. Open a window just a little on the side the of vehicle that's away from the wind. This will help keep CO out. 4-40