Hey guys I'm in the process of replacing my tranny on an 03 cts do you guys know if I'll need to have the car reprogrammed by the dealer?... I basically rebuilt this car... New valve cover gaskets, plugs,waterpump,thermostat,radiater, belts,intake manifold gaskets? Fuel pump,... Now it's the tranny springs struts and brakes.......220k and running strong..knock on wood