On Easter I was driving my Camaro and I stopped at a stop sign. When I took off I gunned it and right when it should have shifted from first to second all I heard was BANG. It was kinda like when you break the tranny mount and the tranny hits your floor pans. Well I let off the gas for a second and then tried driving again but the motor would just rev. So I put the shifter into second and I started moving. Then I put it in drive then overdrive, When I put it in overdrive it just revved again, but if I put it in drive it would go. I have to be going over 45 for the tranny to me able to be put in overdrive, it also will not move from a stop when the shifter is in overdrive, it must be in drive or lower. The tranny would shift really hard into second now you can't even feel it. Also it was flaing at the 2-3 shift at least once a day normally when it was still cold. The trans doesn't slip or make any funny noises so I think I broke something. Any thoughts would be great.