[Lee Tong]

I purchased a 2008 DTS in Aug 31, 08. A week or so after the purchase I noticed a noisier than normal coming from the engine compartment. Then, coming home in a residential area between 25 and 30 mph there was a whining coming from the engine compartment. I took it in to the dealer and a mechanic thought it was an intake manifold, a number of tests were done and all were within tolerances. We drove a 2009 DTS and it had the same whining noise and I was told that it was 'NORMAL????' I took the car to another dealership and the mechanic there thought it was in the 'end transmission'. We drove another DTS and it has the same noise. They weren't sure as to what caused the problem, that it could be 'NORMAL'.I couldn't leave the car so it wasn't written up. The whining is very annoying which I have told the customer service representative in the original dealership. So, they're going to change some parts in the end transmission, hoping that it will eliminate the whining noise...No guarentees. wish me luck! Has any of you Cadillac owners ever bought a car, particularly a Cadillac with an inherent whining noise?.