1998 Chevrolet Express Van Owner's Manual - Page 206

A CAUTION: Using a match neara battery can cause battery gas toexplode. People have been hurt doing this, and some have been blinded.Use a flashlightif you need morelight. Be sure the batteries have enough water. You don't need to add water to the ACDelco Freedom@ battery (or batteries) installed in every new GM vehicle. But if a battery has filler f caps, be sure the right amount fluid is there. I of it is low, add water to take care that first. If of you don't, explosive gascould be present. Battery fluid contains acid that can burn you. f Don't get it onyou. I you accidentally get it in your eyes or on your skin, flush the place with water andget medical help immediately. 5. Check that the jumper cables don't have loose or missing insulation. If they do, you could get a shock. The vehicles could be damaged, too. Before you connect the cables, here are some basic things you should know. Positive (+) will go to positive (+) and negative (-) will go toan unpainted metal engine part or a body metal surface. Don't connect positive (+) to negative (-) or you will get a short that would damage the battery and maybe other parts, too. And don't connect the negative (-) to negative (-). Fans orot---r n-- ving engine parts can ..re you in, badly. Keep your hands away from moving parts once the engineis running. 5-5