Hello all Never thought i would have to make a post about about a BRAND NEW vehicle but alas i do.. Just bought a 2011 Chev Silverado 4 speed auto. 2 things are really bad with this vehicle.... I have only put on a 1000kms on this and i am noticing that holding the gas pedal constant anywhere between 80 to 110 kph the thing just seems to judder and stutter. Also when facing up in parked and i shift to Drive as soon as i let off the brake the truck just rolls backwards and stalls. It does move forward in i hit the gas but being and auto it should not move anywhere.. Anyone got any ideas?