EVAP Emission Control System Leak (small).Start with inspecting the gas cap and make sure it is on tight. If it is anything more than that seek professional help. Small EVAP leaks can be difficult to locate. Most repair centers can do a smoke test to locate the source of the leak.
The 2004 Chevrolet Impala has 12 valves.
The 2004 Chevrolet Impala has a V6 engine.
The 2004 Chevrolet Impala is a gas-powered vehicle.
The 2004 Chevrolet Impala has overhead valves (OHV).
The 2004 Chevrolet Impala has a 4-speed automatic.
The 2004 Chevrolet Impala runs on regular unleaded.
The height of the 2004 Chevrolet Impala is 4 ft. 9.3 in. (57.3 in.).
The 2004 Chevrolet Impala has a drag coefficient of .31 Cd.
The 2004 Chevrolet Impala is 16 ft. 8 in. (200 in.) long.
The 2004 Chevrolet Impala's turning circle is 38 ft..
The curb weight of the 2004 Chevrolet Impala is 3389 lbs..
The 2004 Chevrolet Impala has 39.2 in. of front head room.