Hi guys, Got a 1988 GMC Topkick, with a 3208 Turbo, 215 H.P, MT 643, Eaton Rear, Spicer driveshaft, Hydraulic brakes. This truck when shifted into drive, or during the 2nd convertor to 2nd lockup shift, will bang upon engagement.

It will not do it all of the... Login to read more.