Re: 4r100 shifting into overdrive hard!!!
i wish i could answer your questions but i just have no idea, it does not have a programmer and he did not hook up a scanner, he was going to hook up a scanner to it but when he drove it he said there was no need. i would think that after 252,ooo miles it probably has been rebuilt. but who knows. This guy said that the valve body had been modified. how can i find out if it has a chip? thanks for taking the time to try and help me out.