2003 Cadillac DeVille Owner's Manual - Page 315

Notice; If you leave your radio on, it could be badly damaged. The repairs wouldn't be covered by your warranty. 3. Turn off the ignition on both vehicles. Unplug unnecessary accessories plugged into the cigarette lighter or in the accessory power outlets. Turn off the radio and all lamps that aren't needed. This will avoid sparks and help save both batteries. And it could save your radio! 4. Open the hoods and locate the positive (+) and negative (-) terminal locations on the other vehicle. Your vehicle has a remote positive (+) jump starting terminal and a remote negative (-) jump starting terminal. The remote negative (-) terminal is located near the power steering fluid reservoir. It is marked "GND (-)." See Engine Compartment Overview on page 5-12 for more information on location. You will not see the battery of your vehicle under the hood. It is located under the rear passenger's seat. You will not need to access the battery for jump starting. The remote positive (+) terminal is for that purpose. The remote positive (+) terminal is located in the engine compartment on the passenger's side of the vehicle. A second remote positive (+) terminal is located on the rear underseat fuse block. Lift the red plastic cap to access the terminal. An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 5-44