1994 Pontiac Grand Am Owner's Manual - Page 139

Your Driving and the Road If You're Caught in a Blizzard (CONT.) 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 can run the engine to keep warm, but be careful. Run your engine only as long as you must. This saves fuel. When you run the engine, make it go a little faster thanjust idle. That is, push the accelerator slightly. This uses less fuel for the heat that you get and it keeps the battery charged. You will need a well-charged battery to restart the vehicle, and possibly for signaling later on with your headlights.Let the heater run for awhile. Then, shut the engine and close the off 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 you as can. To help keep warm, you can get out of the vehicle anddo some fairly vigorous exercises everyhalf hour or so until help comes. ..138