Cadillac 2008 CTS - Manual (Page 330)

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 18 inches (45 cm) 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.
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