I had a similar problem on my 2002 Impala which turned out to be the air filter housing cover was not put back on correctly after changing the filter. You may also want to look at all the connections & fittings in the air hoses to make sure they are seated and tight.
Mike
my $.02I have seen PVC valves incorrectly installed on these as well. Dealer parts required on this one at that time. Another AnswerIs the air filter a K&N? They will make a whistling sound while accelerating also.whistling noise from engine will be caused by a leaky gasket,sucking air. this is usually the intake manifold gasket
With engine off. Turn key to on. Press accelerator fully three times. This should reset light.
sounds like a vacuum leak some where in the system
It is at the rear of the engine and has the plug wires coming out of it.
It is either time for a oil and filter change or the engine is low on oil.
Turn ignition to on without starting engine and press all the way down on the accelerator 3 times within 5 seconds
Collapsed hydraulic lifter? - try a quart of mystery oil
The whistling sound coming from near the transmission could be a problem with a speed sensor. It is possible that the speed sensor is attached only at one end. This sensor has two places where it is attached.
The 2009 Chevrolet Impala has a V6 engine.
The 2011 Chevrolet Impala has a V6 engine.
The 2002 Chevrolet Impala has a V6 engine.
The 2008 Chevrolet Impala has a V6 engine.