High pitched squeeling during start up/turn of wheel

I own a 2001 Hyundai Sante Fe, 156k, 3.5 liter engine. And I have been experiencing this jerking on and off. It's not consistent so most mechanics are having problems with trouble shooting the issue. The code that was given was for the fuel pump and we have since replaced it and the problem is still there, we have also replaced the timing belt, and the serpentine belt, I really feel like we are getting the run around though since this is the 5th time in the last month taking it to the mechanic. Just a couple of days ago we went to start the car and now there is also a high-pitched squeeling when you start the car, but more so if you turn the wheel. Hopefully you can help.