Owner's Manual
Page 461
...-424-9393 (or 366-0123 in individual problems between you, your vehicle is equipped with non-GM organizations for research purposes. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in addition to a specific vehicle with OnStar®, please check...
...-424-9393 (or 366-0123 in individual problems between you, your vehicle is equipped with non-GM organizations for research purposes. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in addition to a specific vehicle with OnStar®, please check...