I have had shift problems with my truck since day one. I now have a Suncoast 5 and still had the problems after the install. I just had two computers programmed at the dealer, ECM & TCM. Seems that the delayed shift is pretty much gone. Now a new problem has arisen. It came up before the comp change. The down shifts when slowing are very harsh. The harder I stop the worse they get. On a real hard stop the down shift will actually activate the anti lock brakes and the next stop, if gradual, will be fine.. Any ideas.