GOOD NEWS!!! I just replaced the blades with BOSCH IKON blades for '07 LE. Problem solved! No more chattering..thanks everyone for the reponses. These blades wipe extremely well and look pretty good as well.
I'm glad that the BOSCH wiper blades fixed your issue. I was not trying to be a PITA or anything when I was telling you to replace your blades, I was just trying to keep you from wasting time with the dealer. IMHO, most dealers are essentially useless. If I could test drive a car at a local test drive station and buy a car over the internet and have it delivered to my home like they can in the UK I would do it in a heartbeat.
There are 4 problems I have with every dealer I've ever been to:
1) Salespeople are pushy, and they don't listen to what you want or need, they are just interested in selling you what will make them the most commission based on what you are willing to buy.
2) Salespeople NEVER know as much about the cars as I do. When I go into a dealer the first thing I ask for is a test drive. When they try to tell me about the car first, I stop them and tell them what they are about to say and then give them specs for the car that they have to go look up to check. Then they still act like they know more than I do, which they don't. Their crap wastes my time and there lack of knowledge is not impressive.
3) Service after the sale is lacking. I've bought cars with serious problems that were covered by a TSB. For a FORD I owned, I took all the time to do research, track down the problem, get a TSB number from the manufacturer and explain what was wrong to the service writer. When they couldn't find what was wrong I printed a copy of the TSB and handed it to them, at which time they informed me that the TSB didn't apply to my car even though it stated on the first page that the VIN of my car was eligible under the TSB. I finally had to take the car to another dealer who happened to have a trainer from FORD in who could fix my problem.
4) Even when dealers fix problems they often don't do what I expect. I.E., when you do something that disconnects the battery, you should write down all the radio station presets so you can reset them and you should reset the clock before you return the car to the customer.
While internet car shopping doesn't eliminate 3 and 4 it does eliminate 1 and 2. Lately I've taken to not even visiting the dealer to buy a car except for a test drive and to pick it up. What I do is call the sales manager at my Toyota dealer and arrange a test drive through him. I go and drive the car, then I tell him what I want and ask him to give me a call with my options when he finds something close. I chose from the options he gives me and then I go in and sign the papers.
That way I never have to deal with a salesperson and since the sales manager doesn't get paid on commission he isn't pushy and since he knows that I know the cars better than he does he doesn't try to tell me anything. Another good thing about the sales manager is that I basically tell him what I'm willing to pay after I get an initial quote and he usually just agrees to it. Again he doesn't have to worry about making money on the deal for himself, all he has to worry about is making money for the dealer, so it is in his interest to sell me the car for a reasonable price in 5 minutes instead of dickering with me for days over $500.
So far I've got lucky with my Solara and it has only needed one repair, and that was handled by a bodyshop that Toyota has do all its work. With my Corolla I never talked to the service writer when it came to repairs, I took the car to the service manager and explained what I wanted done in great detail. To date they haven't screwed up too badly but even though I tell them write down my presets and reset them when they are done, they still forget, or sometimes I find greasy fingerprints on the glass, etc. If all you do is go in and tell the service writer, "the car makes a noise" you won't get good service from most any dealer.