Front Suspension Wheel Bearing problems of the 2011 Chevrolet Impala

I hear a horrible grind when making a left hand turn after a stop, car also felt like it did not want to go forward causing hesitation in left hand turn - very dangerous with oncoming traffic. Have had it to mechanic many times, either they couldnt find the problem or would fix this or that and then problems right back within days if not hours. Occasionally get service stabilitrac and/or abs lights, usually lights would clear by next day when I took to mechanic and again they'd either find no problem or try a fix -still a problem. I believe they're going to try to replace wheel bearing next but from all forums I've read this doesn't seem to help people either, problem comes right back, recently rack and pinion had to be replaced costing $700 to fix, within 2 days I heard the grind, had hesitation on a left hand turn, noticed fluid under my vehicle upon return home, hoped it was a/c condensation, within days the power steering is going out again - turns out new rack and pinion is leaking and car is completely out if power steering fluid again after 2 weeks. I can't help but wonder if the sound and grind isn't what's causing my rack and pinion issues as well? have owned 2 years now with this problem continuously throughout ownership of the vehicle. Approx. 68k miles on it when purchased now almost 90k have to be very cautious making left hand turns that there is no oncoming traffic as hesitation may cause you to get hit if vehicle can't turn in time. Have to completely let off gas and try again sometimes still grinds if so repeat is all you can do. Becoming very scary and costly with no fix found so far!!! please investigate! multiple posts regarding same issue some on newer models, very much a safety issue I can't even teach my child to drive in the car as I am afraid for their safety in it, as well as my own safety ever time I try to make a left hand turn.