So I replaced the 700r4 in my suburban. I scored it from a guy who had bought it for his 93 k1500 realizing it was from a 91 and wouldn't work. So I got it installed and it like a hang on shifting into 3rd sometimes. And when its cold it will take longer to shift into all the gears. A buddy of mine told me it takes a while to break in. I dont know I've always owned manuals!