Hello, often times the sway link will be fractured, or will be missing a bushing or a piece of it. You should be able to see a physical concern.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
RepairPal Certified shops can diagnose and repair your 2014 GMC Acadia. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.