GMC 2003 Yukon Owner's Manual page 406

10. Now start the vehicle with the good battery and run
the engine for a while.
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.
5-48
9. Connect the other end
of the negative ( )
cable to the remote
negative ( ) terminal,
marked GND, on
the vehicle with the
dead battery.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote
Negative Terminal
B. Good Battery or Remote Positive (+) and Remote
Negative ( ) Terminals
C. Dead Battery or Remote Positive (+) Terminal