Cadillac 2010 CTS Sport Sedan Owner's Manual page 329

The battery is in the trunk, behind
the trim panel, on the passenger
side of the vehicle. Refer to the
replacement number shown on the
original battery label when a new
battery is needed.
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.
After a power loss, such as
disconnecting the battery or
removing the maxi fuses in the
power distribution fuse block, the
following steps must be performed
to calibrate the electronic throttle
control. If this is not done, the
engine will not run properly.
1. Turn the ignition to ON/RUN.
Do not start the engine.
2. Leave the ignition in ON/RUN for
at least three minutes so that the
electronic throttle control will
cycle and re-learn its home
position.
3. Turn the ignition to LOCK/OFF.
4. Start and run the engine for at
least 30 seconds.
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See
for tips on working
around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative ( ) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative ( ) cable from the
battery or use a battery trickle
charger.