Front or Rear?
Front- The wheels are held in place by control arms (a-arms) which can hinge up or down as the car’s body moves up and down in relation to the wheels. A stabilizer bar (sway bar or anti-roll bar) runs across the front of the vehicle and attaches to the R&L control arms. This keeps the car from leaning too much in turns.
There’s a short link (link pin) that attaches the stabilizer bar to each control arm. It’s got rubber isolators or bushings to keep it from rattling. That’s probably what has gone bad on your car.
It is not a major job to replace these and the parts shouldn’t be very expensive. I’d see if there is a kit available.
CSA