Hey guys , wondering if you guys can help, Just bought the truck last week , 03 Silverado 4 x2 4.3 liter ,it's going back to the dealer , but I would like to know what it is so they won't give me the run around @ about 42 mph I feel a hesitation whenI slightlystep on the gas to keep it @ 42 mph (almost feels like i'm driving a standard and i'm in the wrong gear ) Thanks jdeoli