I have a 2007 S40 AWD, just hit 55k miles. Whenever I hit a bump, the front suspension squeaks, sorta like a metal to metal chirp. It doesn't do it when I go out and push on the nose of the car, has to be a quick jolt.<p>I've had this problem for a while, but it goes away in the winter (I opened the windows just to make sure). It's back in force now, and I was wondering if anyone else had the same problem, or knows what it is so I can fix it. The dealer didn't do anything the three times I brought it in under warranty. Now that it's out of warranty, there's no way I'm going to that dealer again.