1995 Pontiac Grand Am Owner's Manual - Page 168

Run your engine only as long as you must, This saves fuel. When you run the engine, make it go a little faster than just 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 headlamps. the heater run for awhile. Let Then, shut the engine off and close the window almost all the wayto preserve the heat. Start the engine again and repeat this only when you feel really uncomfortable horn the cold. But do as little as possible. Preserve the it fuel as long as you can. To help keep warm,you can get out of the vehicle and do some fairlyvigorous exercises every half hour or so until help comes. J 4-25