1997 Chevrolet Tahoe Owner's Manual - Page 241

3. Turn off the ignition on both vehicles. Unplug unnecessary accessories plugged into the cigarette lighter oraccessory power outlets. Turn off all lamps that aren't needed, and radios. This will avoid sparks and help save both batteries. And it could save your radio! I NOTICE: If you leaveyour radio on, it could bebadly damaged. The repairswouldn't be covered by your warranty. 4. Open the hoods and locatethe batteries. Find the positive (+>and negative (-) terminals on each battery. 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 batteries have enough water.You don't need to add water to the Delco Freedom@ battery (or batteries) installed in every new GM vehicle. But if a battery has filler caps, besure of the right amount 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 iton you. If you accidentally getit in your eyes or on your skin, flush the place with water andget medical help immediately. ~ If your vehicle has air conditioning, the auxiliary electric fan under thehood can start upeven when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 5-4