Originally Posted by Big Evil
Usually running in 3rd gear is a default "limp mode". But it stays in 3 all the time and does not shift through 1, 2. It sounds like a controller fault, I'd try to get it scanned and see what the computer tells you
Actually it's shifting o.k. from 1st to 2nd and up to 3rd gear in automatic mode, but does not go to 4th gear. I've already put it on a scanner, but it said Fault 57 Unknown.