1998 GMC Suburban Owner's Manual - Page 255

A CAUTION: near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. a flashlight if Use you need more light. Be sure the batteries have enough water. You don't need to add water to the Freedom@ Delco battery (or batteries) installed in every new GM vehicle. But if a battery has filler caps, be sure the right amountof fluid is there. If it is low, add water to take care that first.If you don't, of explosive gas could be present. Battery fluid contains acid that can burn you. Don't get it on you. you accidentally get it in If your eyes or on your skin, flush the place with water and get medical help immediately. 5 . Check that the jumper cables don't have loose or missing insulation. I f 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 t o a metal engine part. Don't connect positive (+) to negative (-) or you'll get a short that would damage the battery and maybe other parts, too. On vehicles equipped with d u a l batteries, make any battery connections to the primary battery located on the passenger's sick of the vehicle. Fans or other moving engine parts can injure you badly. Keep your hands awayfrom moving parts once the engine running. is 5-5