I have a 2000 Grand Am GT & I hit a speed bump going too fast. I tried to brake at the same time, so the car's front suspension was already in a downward pitch. You can guess what happened next, I hit the bump & bottomed out...HARD. Immediately after, upon accelerating away from the bump, it made a single very loud
clunk. It came from the front, driver's side. I thought it was a motor mount...