It really only shook when I would turn left, and when there was pressure on the CV. For example: the more acceleration, the more the shaken would worsen. Until one day, I was leaving Wal-Mart, and I heard a pop sound. As I took off, every so many feet, I could feel like something hitting really hard. I couldn't tell what it is. After I stopped again, I took off normal and the hitting got so hard that I couldn't drive over 10MPH. When I got it home I immdetiatly looked up soulutions. When I went to Car Quest, a guy that worked at a GM dealer said it was either the wheel bearing hub or CV halfshaft on the opposite side of which way u turn. So like I said, turn left, it's the right side. I replaced the bearing. No luck. I then replaced the CV, and every bit of the shaking and "stupidity" as I call it when away, except for the little but that was caused by maybe bad struts or the old tires I had. Hope this helps!!!