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Cadillac CTS/CTS-V Brake Problems
The service writer tried to convince me that this was normal but finally suggested that I try another CTS and I would see it was the same. So I did and it wasn't. Long story short there is a service bulletin 030525009A which deliniates the proper way to bleed the brakes to eliminate this behavior. They did this and problem solved. Also the windshield wipers were chattering in any condition except a blinding rainstorm a condition I have only encountered on GM cars. They replaced them and chattering has stopped.
One thing I like about the CTS is the dealer is 12 miles 15 minutes from my house and so far has been very good. The closest Lexus dealer is about 75 miles away. Everyone says how good the Lexus is. In my case it could never be good enough.