1999 GMC Sierra 1500 Pickup Owner's Manual - Page 245

. To turn off theflasher, pull out on the collar. Whenthehazardwarningflashersareon,your turn signals won'twork. up attheside Other Warning Devices If youcarryreflectivetriangles,youcansetone about 300 feet (100 m) behindyourvehicle. of theroad Jump Starting If yourbattery(orbatteries)hasrundown,youmaywant to useanother vehicle and some jumper cables to start your vehicle. But please follow the steps-below to do it safely. CAUTION Batteries can hurt They contain you. They can because: dangerous be you. I . . c te. Theycontainenough electricity to burnyou. If youdon'tfollowthese ' !psexactly,someorall of tt- - - e things n hurt Theycontain acid thatcanburn gas that explode can I To Jump Start Your Vehicle 1. Checktheothervehicle. groundsystem. ' It musthavea 12-volt batterywithanegative I If theothersystemisn't a 12-voltsystemwith vehicles can bedamaged. - If youhavea diesel enginevehiclewithtwobatteries(ormore),you shouldknowbeforeyoubeginthat,especially in cold weather,youmay 5-3 a negative ground,bot