have a 2010 impala and have a clicking sound under the climate control wont stop on 2010 Chevrolet Impala

will stop when i raise the switch up a notch or two will run if i have the car on or off it will stop after about 15 min.

1 answer
that sounds like the blend door motor or the recirculate door motor being bad. this causes it to continue to run past the stop points