1997 GMC Sonoma Owner's Manual - Page 273

Battery Every new vehicle has a Delco Freedom@battery. You never have to add water to one of these. When it's time for a new battery, we recommend a Delco Freedom battery. Get one that has the replacement number shown on the original battery's label. Bulb Replacement Before you replace any bulbs, be sure that all the lamps are off and the engine isn't running. See "Replacement Bulbs" in the Index. Halogen Bulbs Vehicle Storage If you're not going drive your vehicle for days or more, to 25 take off the black, negative(-) cable from the battery. This will help keep your battery from running down. A CAU'ION: I - A CAUT'ON: Batteries have acid that can burn and gas you that canexplode. You can be badly hurt you if aren't careful. See "Jump Starting" in the Index for tips on working around a battery without getting hurt. Contact your dealer to learn how to prepare your vehicle for longer storage periods. Also, for your audio system, see"Theft-Deterrent Feature" in the Index. Halogen bulbs have pressurized gas inside and You or can burstif you drop or scratch the bulb. others could be injured. sure to read and Be follow the instructions on the bulb package.