Consumers are urged to report any GMC vehicle problems to the National Highway and Traffic Safety Administration (NHTSA). When enough reports are collected, the NHTSA will investigate and deterimine the root of the GMC problems. Once the results of the investigation are made public, either the manufacturer or the government will issue an auto recall to resolve the situation. If the GMC recall issued affects your car model, an official safety recall notice will be sent via postal mail. This official GMC car recall will give a report of the situation and instructions of how and where to fix your vehicle.