2003 GMC Sonoma Owner's Manual - Page 313

8. Now connect the black negative (-) cable to the negative (-) terminal of the good battery. Use a remote negative (-) terminal if the vehicle has one. 10. 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. 11. Now start the vehicle with the good battery and run the engine for awhile. 12. Try to start the vehicle that had the dead battery. If it won't start after a few tries, it probably needs service. 9. 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 engine part, or to a remote negative (-) terminal on the vehicle with the dead battery. Notice: Damage to your vehicle may result from electrical shorting if jumper cables are removed incorrectly. To prevent electrical shorting, take care that the cables don't touch each other or any other metal. The repairs wouldn't be covered by your warranty. 5-50