Hi all, just discovered problem 2nd gen. 96 3500 5 speed US gear under back of transmission Gear Vender back of transfer case, coming home Sunday going down a long grade pushed on the exhaust brake and when the RPM drop down, shifted to 3rd to get a better speed reduction, felt a shutter clutch? ( pulling boat 30Ft with 3 axle 5 wheel set up 18,000. or so. today attempted to stick boat in to shed not going back will go forward?