1996 GMC Sonoma Owner's Manual - Page 189

2. Get the vehicles close enough so the jumper cables can reach, but be sure the vehicles.aren't touching each other. If they are, it could cause aground connection you don't want. You wouldn't be able to start your vehicle, and the bad grounding could damage the electrical systems. You could be injured if the vehicles roll. Set the parking brake firmly on each vehicle. Put an automatic transmission in PARK (P) or amanual transmission in NEUTRAL (N). If you have a four-wheel-drive vehicle with a manual transfer case shift lever, be sure the transfer caseis not in NEUTRAL (N). I NOTICE: If you leave your radioon, it could be badly damaged. The repair wouldn't be covered by your warranty. 3. Turn off the ignition onboth vehicles. Unplug unnecessary accessories plugged into the cigarette lighter, or accessory power outlets, if you have this option. Turn off all lamps that aren't needed as well as radios. Thiswill avoid sparks and help save both batteries. In addition, itcould save your radio! If your vehicle has air conditioning, the auxiliary electric fan under the hood can start up even is when the engine not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 5-3