Tl* the contact owns a 2015 gmc canyon. while driving, a loud rattling noise was heard underneath the vehicle. the contact drove to martin cadillac (located at 12101 w olympic blvd, los angeles, ca 90064, (310) 464-2183) where it was diagnosed that an unknown bracket detached and needed to be replaced. the vehicle was not repaired due to the repair fees. the manufacturer was not contacted. the approximate failure mileage was 41,722.