Saw the question about no shift at WOT, how about if it shifts, but feels like someone hit the floor pan with a rubber mallot, kind of an abrupt downshift? This is with o/d on. 1999 4.2L 4R70W. Upshifts fine through the gears, very smooth. Only kickdown to pass, it's like an abrupt bump into the lower gear. Does this most of the time (occasionally downshifts ok, but not often).
Thanks.
