GM Pump Rub in Transfer Case
GM transfer cases 261 and 263 are prone to a condition known as Pump Rub. It is where the pump used to circulate the fluid in the transfer case wiggles back and forth wearing a hole in the transfer c...
Forum Discussion
Maybe I've just been away from four-wheel-drive trucks for a while but since when have they used an actual pump in the transfer case? Any transfer case I ever opened many years ago was just splash lubrication... My how the years have passed! This here used to be all farmland as far as the eye could see!
