Has anyones steering box on 02-06 chevy 1500 crapped out on them? I already replaced the pump thinking that was it, "NOT". Replaced steering mid-shaft, it was bad, but that`s a whole different story with GM. Truck has less than 50k on it. Does anyone know if GM helped w/warr. on these parts? I know they extended the warr. on the cats to 80k only after mine plugged solid at 40!