clickig noise in dash when heater control on Auto, ok other settings, on 2002 Cadillac DeVille

after a few minutes ok to switch back to Auto

by in Boca Raton, FL on August 20, 2012
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1 answer
ANSWER by , August 21, 2012
sounds like a bad actuator under dash is going out. seek a diag it could be one of three doors