There are tabs that are hard to see on side of the round plastic guide that sits on top of the seatback. Both will probably be on the side that faces the passenger window. Depress each of these tabs with a small screwdriver or similar, and work the headrest posts out. It is easiest if they are depressed simultaneously.
Get The Haynes manuel.
The 2002 Chevrolet Impala has 12 valves.
The 2002 Chevrolet Impala has a V6 engine.
The 2002 Chevrolet Impala has overhead valves (OHV).
The 2002 Chevrolet Impala has a 4-speed automatic.
The 2002 Chevrolet Impala is a gas-powered vehicle.
The 2002 Chevrolet Impala is 6 ft. 1 in. (73 in.) wide.
The 2002 Chevrolet Impala runs on regular unleaded.
The curb weight of the 2002 Chevrolet Impala is 3389 lbs..
The 2002 Chevrolet Impala has a drag coefficient of .30 Cd.
The 2002 Chevrolet Impala is 16 ft. 8 in. (200 in.) long.
The 2002 Chevrolet Impala's turning circle is 38 ft..