Try getting your catalytic converter checked..most people who have had this problem (me included) tried fuel lines and filters first, and still had the problem. We fixed our cat. converters and the problem went away. Good luck! Layla
The most common cause of the whistling in a 2003 Impala is a vacuum leak. Any of the lines under the hood could be causing the noise.
Trouble code P0003 means: Fuel volume regulator control circuit low
Trouble code P0113 means:Intake air temperature circuit high input
Our 2003 Impala has brake pads.
The 2003 Chevrolet Impala has 12 valves.
The 2003 Chevrolet Impala has a V6 engine.
The 2003 Chevrolet Impala is a gas-powered vehicle.
The 2003 Chevrolet Impala has a 4-speed automatic.
The 2003 Chevrolet Impala has overhead valves (OHV).
A 2003 Impala does not have a timing belt. It has a chain.
The 2003 Impala has a 17 gallon fuel tank
The height of the 2003 Chevrolet Impala is 4 ft. 9.3 in. (57.3 in.).