I thought I would pick people's brains. 2 years ago, I had my Acadia into the dealership for some annual work, and they had mentioned the control arms needed replacing. They said not a major deal right then, but I should look into it. No other place has mentioned it, and I change the tires every winter/spring. I even asked one place about them, to see if they noticed anything, and no...not a problem. Then, just recently, I had a flat that I took into another place, and now they mention the control arms. So I got a quote to mull it over. My father-in-law (who is NOT a grease monkey at all...can barely change his socks, let alone a tire) says that always comes up and they've never had it done to any of their vehicles. However, he's talking about all the used vehicles that they buy through auctions, that they had for their courier business. We're talking vehicles that don't owe him anything, that he can just throw away whenever, and pick up another piece that he'll drive into the ground. Thinking I should get it done when I change my tires, now that the weather is nice. Thoughts on importance of it?