stuck front diff. fill plug
 

Can anyone offer any solutions for removing frozen diff. fill plug on 2012 silverado ? i tried heat PB Blast super torque to no avail. I rounded off the hex head in my futile attempts. Any help would be greatly appreciated. Thanks

youll have to sacrifice a socket....grind the metal off the socket and the plug to expose clean steel.then weld the socket to the plug.put a breaker bar or powerful impact on it and it should break loose.when you put it back on,use allittle grease in the contact areas to prevent it from seizing again