[ryzrs10]

Hey guys
Just traded on my 2010 1lt rs for a brand new 2012 2ss with 140 miles on it. I had it for about a week with just a tad over 600 miles on it now and there is a clicking noise, sounds almost like a small rock hitting the undercarriage, only when shifting from second to third gear under light acceleration. When you get on it, it has no issues. So the dealer told me there are no codes, no tsb and they are waiting for GM to call them back and see what they want them to do. I want to know if any one else has this issue. It's the only issue I have and I love the car.
Thanks guys,
Ry