1997 Pontiac Trans Sport Owner's Manual - Page 276

Snow can trap exhaust gases under yourvehicle. This can cause deadly CO (carbon monoxide) gas to get inside. CO could overcome you and kill you. You can't see it orsmell it, so you might not know it is in yourvehicle. Clear awaysnow from around thebase of your vehicle, especially any that is blocking yourexhaust pipe. And check around again from time time tobe sure snow to doesn't collect there. Open awindow just a little the sideof the on vehicle that's away from the wind. Thiswill help Run your engine only as long as you must. This saves fuel. When you run the engine, make it a little faster go This than just idle. That is, push the accelerator slightly. uses lessfuel for the heat that you and it keeps the get battery charged.You will need a well-charged battery to restart the vehicle, and possibly signaling later on for with your headlamps.Let the heater run for awhile. Then, shut the engine and close the window almost off all the way to preserve the heat. Start the engine again and repeatthis only when youfeel really uncomfortable from the cold. But do it as little as possible. Preserve the fuel as longas you can. To help keep warm, you can get out of the vehicle anddo some fairly vigorous exercises every half hour or until help comes. so keep CO out. 4-29