[SanFrancisco2011SS]

Greetings. I was wondering if anyone else is experiencing the same issue with the manual transmission. When disengaging the clutch in 1st or reverse gear, the transmission makes a very loud chatter very similar to the sound resulting from someone jumping off a diving board. Initially, I didn't hear it but it has become increasingly louder over time (I have 8500 miles on my car). The dealer and GM say this sound is normal (after spending a total of 19 days in the shop) but I find that hard to believe and would not have bought the car had I known that this obnoxious sound would develop. Its loud and embarrassing and a sound that a 40k car should NOT make. Anyone else experiencing this and, if so, just a little bit angry to say the least? I'm concerned this will affect the resale value of my vehicle as I would NOT buy this car after hearing this sound. Thanks for your input.