Geo 1995 Prizm Owner's Manual page 64

Automatic Transaxle
There are several different
positions for your shift
lever.
PARK (P): This locks your front wheels. It's the best
position to use when you start your engine because your
vehicle can't move easily.
Ensure the shift lever is fully in
PARK
(P) range before
starting the engine. Your Geo has a brake-transaxle shift
interlock. You have to fully apply your regular brakes
before you can shift from PARK (P) when the ignition
key is in the ON position. If you cannot shift out of
PARK
(P), ease pressure on the shift lever
--
push the
shift lever all the way into
PARK
(P)
and release the
shift lever button as you maintain brake application.
Then press the shift lever button and move the shift
lever into the gear you wish. See "Shifting Out of
PARK (P)" in this section.
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