So after the hellish weekend with the radiator I finally am getting back to normal but have noticed a slight vibration at idle and park with the engine. It doesnt have any weird sounds or anything like that, its faint but noticeable. the motor over heated but I didnt drive very long on a hot engine.
Any ideas?

 

A slight vibration is normal with the 4.3 V6 as they are inherently unbalanced. Especially if you have never replaced the engine mounts on a 14 year old vehicle.

If the vibration is new, and you're certain it was not there before then I'd watch carefully for codes or misfires, and do an oil change even if its early. Just to be careful.

 

Yeah its slight but noticeable. I am going to change the oil cause I am pretty sure I got some coolant in with the oil as it is with the whole cluster F when I blew the radiator.