The GMC Acadia is a full-size crossover SUV from GM. The Acadia went on sale in the United States in December 2006. Some model years of the GMC Acadia have keyless entry remote fob smart keys that are onboard programmable, which means a person can program the keyless entry remote fob smart key with no special equipment other than the keyless entry remote fob smart key programming instructions. However, other model years of the Acadia are not onboard programmable and require special equipment in order to program the keyless entry remote fob smart key. It is GMC's first front-wheel drive passenger vehicle and GMC's first crossover SUV.