2002 GMC Savana Van Owner's Manual - Page 236

CAUTION: Using a match near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light. Be sure the battery has enough water. You don't need to add water to the ACDelcoR battery installed in every new GM vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, add water to take care of that first. If you don't, explosive gas could be present. Battery fluid contains acid that can burn you. Don't get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately. 4. Open the hoods and locate the batteries. Find the positive (+) and negative (-) terminal locations on each vehicle. You should always use the remote negative (-) jump starting terminal provided instead of any other engine or body part for the ground connection. 5-5