My car was making this noise when I started it up. the noise went away after driving for a while. turnd out I just needed more oil.
relay
Collapsed hydraulic lifter? - try a quart of mystery oil
SEAT BELT
you may have a bent valve
ON the 2006 impala that whining noise is actually the electronics when you accelerate. Its more or less electronic pulses/signals My 06 Impala is the same.
nail in tire, or rock
The belt is slipping.
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.
CV Joints? Rocks in the tire tread?
A gasket leaking will cause this noise. Did you torque to the right specs and in the right sequence then retorque after 3 heat cycles.
Collapsed hydraulic valve lifter? Rocker arm (valves) need adjusting?
can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?