Introduced in 2006 as a full-size crossover SUV, the GMC Acadia is now in its third generation of production and is a three-row mid-size SUV. The 2024 GMC Acadia is available in three models: Elevation, AT4 (AWD only), and Denali. Whether you are shopping for new or used GMC Acadia models, these crossover SUVs offer ample space for cargo and seven passengers and can tow a trailer weighing up to 5,000 pounds.