1994 GMC Jimmy Owner's Manual - Page 193

Run your engine only as long as you must.This saves fuel. When you run the engine, make go a little faster thanjust idle. That is, push the it accelerator slightly.This uses less fuel for the heat that you get andkeeps it the battery charged. You will need a well-charged battery (or batteries) to restart the vehicle, and possibly signaling later on with your headlights. for Let the heaterrun for awhile. Then, shut the engine off and close the window almost all the way to preserve the heat. Start theengine 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 as you can.To help keep warm, youcan get out of the or vehicle anddo some fairly vigorous exercises every half hour so until help comes. Recreational Vehicle Towing (Four- Wheel DriveOnly) r If your vehicle has &wheel drive, you may tow it behind another vehicle providing it does not have the optional electronic shift transfer case. NOTICE: Recreational vehicle towing is not recommended for vehicles with the optional electronic shift transfer case because the electronic shift has no neutral position. 4-35