1999 GMC Sierra 1500 Pickup Owner's Manual - Page 233

AM480043 Runyourengineonlyaslongasyou musk. Thissavesfuel.Whenyourun theengine,makeitgoa little fasterthanjustidle.Thatis,pushthe it keeps accelerator slightly. This uses less fuel for the heat that you get and thebattery(orbatteries)charged. You willneedawell-chargedbattery(or batteries) to restart the' vehicle, and possibly for signaling later on with your If you 'have a diesel engine, you headlights. Let the heater run for awhile. mayhavetorun it at a higher speed to lget enough heat. Then, shut the all theway to preserve the heat. engine off and close the window almost Start the engine again and repeat this onlywhenyoufeelreally do it as little as'possible. Preservethefuel uncomfortablefromthecold.But To helpkeepwarm,youcangetoutofthevehicleand as long as you can. do some fairly vigorous exercises every half hour or so until help comes. If You're Stuck in Deep Snow This manual explains how to get the vehicle out ofdeepsnowwithout damagingit.See"Rocking YourVehicle" intheIndex. Towing a mailer CAUTION If youdon'tusethecorrectequipmentanddriveproperly,youcan losecontrolwhenyou pull atrailer.Forexample,ifthetraileristoo heavy,thebrakesmaynotwork well-or evenatall. You andyour passengerscouldbeseriouslyinjured.Pullatraileronlyifyouhave followed all the in steps i'- I ection. this I ." " 4-55