Hello...today my transmission would not shift into 4th. Also, it would shift the other gears late. This was city driving....then I took it out on a 60mph highway and shifted it manually from 1st through 4th from stop to 60+. I accelerated decently hard. After this, it acted completely normal even when I retured to city traffic. Shifted fine, went into 4th like nothing ever happend. I checked the fluid (hot, running, in park) and it was spot on.