Thanks for your inputs. I am going to do some simple checks this weekend, then if I do not find something easy to fix, I will take it in to a dealer as long as it is under warranty. I will post what they find out.
As a side note, I was surprised to find that my alltime favorite dealer for service (Palmer in Chelsea, Mich) is NOT an authorized Warranty service center for SVT vehicles. I have to take it to a huge dealer in Ann Arbor with whom I have not heard good reports.
We'll let you know what the problems were and what it cost me.