Rita,

If it's an exhaust manifold leak, the noise frequency would rise when you rev in neutral. That is a simple test that you can do while the engine is cold. Otherwise, getting under the car and banging things around would be my first test.
Nice exhaust tips!

Dave

 

Thanks, Dave! It's in the service shop at the dealership today. (It's still under the original warranty.) I'm praying they don't do anything to mess-up my Vette. []

Can't wait to get my baby back home.

Take care,
Rita

 

Thanks everyone for your input and help. It turned out to be a loose exhaust hanger(s), not sure if it was more than one, and was a quick and easy fix. I am so happy the rattle is gone. Time to crank-up the tunes!!!

Thanks again, everyone.

p.s. I do have one complaint: They left it out overnight in the rain and didn't clean it before delivery. Keep in mind, I keep my Vette immaculate and NEVER drive it in the rain, so I was not happy. Guess I was just expecting too much.