Jeep Patriot 2008- Can't get Repaired

I have a 2008 Jeep Patriot and we have spend about 1000 dollars on repair, replacing sensors and it still does not work. The Jeep all of a sudden will go off and the wheel gets stiff and the traction control sensor will go on and so does the engine sensor on the jeep and it will start beeping. We have changed all the sensors that were the "problem" we took it to Jeep and the computer indicated nothing was wrong. It's been half a year and we can't get to fix it. If someone knows what could be wrong or has had a similar experience I would highly appreciate it if you share what you know. We just want to fix it and sell it.