You need new bump stops, there what keep your suspension from over compressing and causing your tires to rub. Look at the lower control arms of your car. You should see a little rubber thing like in this picture:
That is what you need to replace. It’s Energy Suspension part number 99150. It’s a common part that a lot of GM vehicles use so you should be able to find it at your local auto parts store for under $25 a set. Here is a picture of just the bump stop and sum information:
link
This is the website I got the picture from.