The catalog number of the original equipment battery is the last
three digits of the battery GM part number.
Cold Cranking Amperage = The amperage available for 30 seconds
of engine cranking at -18° C (0° F).
Reserve Capacity Rating = The approximate time in minutes a battery
can support a 25 ampere load without the battery terminal voltage dropping
below 10.5 volts at 27°C (80°F). This is important in the event of
a charging system failure.