Cadillac 2012 CTS-V Owner's Manual page 433

6. Connect the red positive (+)
cable to the positive (+) terminal
of the dead battery. Use a
remote positive (+) terminal if the
vehicle has one.
7. Do not let the other end touch
metal. Connect it to the
positive (+) terminal of the
good battery. Use a remote
positive (+) terminal if the vehicle
has one.
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.