2003 GMC Sierra 1500 Pickup Owner's Manual - Page 430

11. Connect the other end of the negative (-) cable to the negative (-) terminal of the dead battery or to a remote negative (-) terminal if the vehicle has one. 12. Now start the vehicle with the good battery and run the engine for a while. 13. Try to start the vehicle that had the dead battery. If it won't start after a few tries, it probably needs service. V8 Engine V8 Engine, Diesel Similar 5-55