Buick LaCrosse Owner's Manual page 436

8. Connect the other end of the
black negative ( ) cable to an
unpainted heavy metal engine
part (D) away from the dead
battery, but not near engine
parts that move.
9. Start the engine in the vehicle
with the good battery and run
the engine at idle speed for at
least four minutes.
10. Try to start the vehicle that had
the dead battery. If it will not
start after a few tries, it
probably needs service.
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