Hmm well apparently I'll have to move my seat

it only happens when I start the car up. Apparently I don't push all the way in when driving. No idea?
All there is around here is autos and I wasn't impressed with how ruff it shifted. But honestly as long as it keeps together I don't care. 30 mpg or anywhere close to that will be amazing!!! Not that I drive much... I've had the Camaro for 4 months and don't even have 2k miles yet.