2003 Buick LeSabre Owner's Manual - Page 301

To disconnect the jumper cables from both vehicles, do the following: 1. Disconnect the black negative (-) cable from the vehicle that had the dead battery. 2. Disconnect the black negative (-) cable from the vehicle with the good battery. 3. Disconnect the red positive (+) cable from the vehicle with the good battery. 4. Disconnect the red positive (+) cable from the other vehicle. 5. Return the positive (+) remote terminal cover to its original position. Jumper Cable Removal A. Dead Battery or Remote Positive (+) Terminal B. Good Battery or Remote Positive (+) and Remote Negative (-) Terminals C. Heavy, Unpainted Metal Engine Part or Remote Negative (-) Terminal 5-50