Cadillac 2012 CTS Owner's Manual page 419

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.
Do not let the other end touch
anything until the next step. The
other end of the negative ( )
cable does not 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.
9. Connect the other end of the
negative ( ) cable at least 45 cm
(18 in) 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.
Use a remote negative ( )
terminal if the vehicle has
one. Your vehicle's remote
negative ( ) ground location is
for this purpose.
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 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