This same thing just started to happen to me. When I have the blower on there is no sound. When the blower is off I hear this odd clicking/clunking sound (coming from the passenger side) that only happens every once in a while. The sound occurs only for a few seconds and then it goes away. It seems to occur at random. How did you go about getting them to fix it? Due to the fact it only occurs randomly, I fear that the dealer might tell me they can't hear anything...