2004 Chevrolet Impala Owner's Manual - Page 313

Don't let the other end touch anything until the next step. The other end of the negative (−) cable doesn't go to the dead battery. It goes to a heavy, unpainted metal part or to a remote negative (−) terminal on the vehicle with the dead battery. 11. Try to start the vehicle that had the dead battery. If it won't start after a few tries, it probably needs service. Notice: If the jumper cables are removed in the wrong order, electrical shorting may occur and damage the vehicle. The repairs would not be covered by your warranty. Remove the jumper cables in the correct order, making sure that the cables do not touch each other or other metal. 9. Connect the other end of the negative (−) cable at least 18 inches (45 cm) away from the dead battery, but not near engine parts that move. The electrical connection is just as good there, and the chance of sparks getting back to the battery is much less. 10. Now start the vehicle with the good battery and run the engine for a while. Jumper Cable Removal A. Heavy, Unpainted Metal Engine Part B. Good Battery or Remote Positive (+) Terminal C. Dead Battery or Remote Positive (+) Terminal 5-51