Steering Wheel Vibrate problems of the 2011 Chevrolet HHR

Steering wheel began to shake violently, car pulled to left. Repeated visits and calls to dealership resulted in denial of problem until warranty ran out. After hydroplaning on a small puddle of water, esc and service traction lights came on. Dealership "reset lights" car has continued to shake. Have put 3 sets of tires on car and 2 sets of brakes, one set of rotors and turned rotors. Dealership says this is normal. Only found out about ignition recall after calling to complain about light still on and yet another set of bald tires. Called gm and they offered rental car until ignition parts come in but will replace esc sensor at my cost. No investigation as to stabilization issue of car or why it is chewing up tires and pulling to the left. The car is still unsafe. A google search will show many others are experiencing this same issue. Awaiting yet another response from gm. This car needs serious investigating. An accident is at hand. They only want to sell me tires and parts. The shake is dangerous and the esc and traction is disengaged at present. Gm has known about this problem. Pauline at gm has been nice but not helpful.