Power Steering Fluid problems of the 2007 Buick Lucerne

When bringing the car in for grinding brakes, my mechanic informed me that my rack and pinion was leaking and my rear struts were broken and leaking. (this was later confirmed with a Buick dealership). I was informed that my car would not be able to pass my yearly inspection without the rack and pinion repair. I was also informed that the repair would be quite costly. I was stunned since I have had nothing but complaints and repairs with this car which I am still paying for, the last past two and a half years respectively. I only have the car for four years. I feel the car is too young to have so many issues especially something as serious as a rack and pinion repair needed. This is a safety issue. I cannot drive the car like this except locally and I have to watch the power steering fluid which I have been doing. I also cannot drive it now since my inspection is expired. I do not have the money to pay for this right now and I have had exhaustive issues with this car. I approached Buick and they are not receptive. The car is no longer in warranty.

Car made a whirring sound when turning. Took it to the dealership and they said that I need rack and pinion replaced. There was a TSB for fluid leak from steering gear line connection which I did not know about - therefore my power steering fluid was almost empty. I am a senior citizen and think I should have been contacted about the TSB. This is a safety issue if it affects the steering and I believe the dealership should be responsible. Also when I was at the dealership on Monday another man was told he needed to have rack and pinion replaced on his Buick - isn't that curious.