The air amounts flowing from the air vents are all the same. The blower seems to be working fine at any speed, with and without the "auto" mode engaged.

Currently, there is no indication of a leak. The dealer checked it with the dye...and did not tell me there was a leak. I intend to take it to an independant shop for anaylsis, but I would like more input before taking it. The dealer charged me $200 to troubleshoot it on top of the $500 for the 60,000 mile service. Needless to say, this is the last time I take it to this dealer!

thanks for the suggestions. If you have any more ideas...please advise.