Regular unleaded
A 2002 model year vehicle will use R134a refrigerant.
The 2002 Chevrolet Impala has a 4-speed automatic.
It will use R134a Freon..........
The 2002 Chevrolet Impala runs on regular unleaded.
r134a
R134a
R134a
You should have this verified but the freon is probably HFC134.
R134a, just like any other vehicle for that model year.
chevy impala
R-134A