Buick Regal Owner's Manual page 335

For more information about the
vehicle battery, see
.
If the battery has run down, try to
use another vehicle and some
jumper cables to start your vehicle.
Be sure to use the following steps to
do it safely.
Batteries can hurt you. They can
be dangerous because:
They contain acid that can
burn you.
They contain gas that can
explode or ignite.
They contain enough
electricity to burn you.
If you do not follow these steps
exactly, some or all of these
things can hurt you.
The jump start positive is under a
trim cover in the engine
compartment on the driver side of
the vehicle.
The jump start negative grounding
point for the discharged battery is
the engine block or an engine
mounting bolt. Connect to a spot as
far away from the discharge battery
as possible.
These locations are used instead of
a direct connection to the battery.
1. Check the other vehicle. It must
have a 12-volt battery with a
negative ground system.
2. Position the two vehicles so that
they are not touching.