I have a 2004 Hyundai Elantra, the car only has 125k miles. The car starts up just find and idles perfect. When driving the car it has a hard shift from second to third gear and again from third to forth. From first to second seems to have no problem. Have already changed the fluid and did not seem to work. Any one have any ideas? Been reading it could be the transmission solenoids but the they are inside the pan and seems like a lot of work to get the cover off. Anyone know of anything else it could be?? Also no check engine light on at this time.