Vehicle Shudder problems of the 2007 Kia Motor Sorento

I bought this 2007 Sorento October 10, 2007. Transmission was messed up from the start. I have posted earlier about my problems (odi id number : 10222227). Some of my problems were fixed. The problem with the up-shifting and down-shifting at the same time were fixed. But I still have to much play in drive-line when shifting from forward to reverse. And that play comes in to effect when other shifts happen. When going down a hill and the engine and transmission catch up with each other, I can feel the ker-klunk or shutter when they do. And also at times I feel the same thing when the car get almost to the top of a hill and it's time for the transmission to up-shift, I feel that same shutter. I took it back to the dealership for those problems a week or so ago and they had my car for 9 days. Now the car does a hard shift into almost every gear. Started with feeling the hard shift into the first 2 gears and now feel it even in 5th gear. These transmission problem have been going on since October 10, 2007. Plus as posted before, the sport-a-matic portion of the transmission is still screwed up. When traveling at 65 miles an hour and moving shifter from left to right into sport-a-matic position, the transmission automatically drops to 4th gear. I've drove 3 other models of there cars and none of them do this. They stay in the gear that they were in on the left side. This type of transmission are real popular now. I've checked with anybody I know with that type of transmission and there's all work properly. Kia tells me since that year, that model does that, that I have to live with it. Also the car has a slight vibration at times at higher speeds.

We purchased this a 2007 kia Sorento for folgers kia in Feb of 2007. After about 4 months we noticed that when accelerating between 35 and 45 miles per hour the car shudder violently and loses power. In my opinion very dangerous. We finally got the car in the shop on Jan 2, 2008 only to be told that kia says their is a software problem and it can't be fixed. Also told it is normal for the Sorento. If normal, why didn't it do it when we first bought it and test drove it? I find their answer unacceptable. In my opinion it is very dangerous and if this problem can't be fixed then it is a lemon. Please assist with how to proceed. I'm getting nowhere with kia's very inadequate service departments.

In July, 2007, I purchased a 2007 kia Sorento. On my first occasion to drive on the interstate, coming home from work, I encountered a major shudder or jerking when traveling at approximately 35 mph. The interstate was very show traveling due to an accident. When I tried to accelerate, the car shuddered (or jerked) several times extremely hard but then straightened out. The hard shudders occur at approximately 35 to 45 mph. Also, when traveling with the cruise control engaged, if I have to disengage the cruise control due to slowing traffic, I press the middle cruise control button and take over manually. When traffic picks back up, I press the "resume" button, again. . . The shudder. The shudder or jerking always happens upon acceleration. When attempting a hill at 35 to 45 mph, the car loses power all together and really struggles until reaching the top. I had contacted the dealership and taken the Sorento in for repair. The service manager drove the car, did in fact experience the shudder, but was unable to come up with a solution to fix it. He contacted his district manager who said he was working a car with the same problem and was trying to find a "cure. " I have taken my car back to the dealership and even drove with the service manager. He acknowledges the problem but, again, at this time, there is no solution as to how to fix it. I contacted kia headquarters to see if they were working on trying to find a solution to fix the shudder. I was told that this is probably a characteristic of the car and would be considered "normal" performance for the Sorento. I find this totally unacceptable. I had driven a loaner Sorento when mine was in for maintenance and it did not do the shudder. I am very disappointed with my Sorento and am considering trading again.