The Buick Enclave is a full-size luxury crossover SUV launched in May 2007 as a 2008 model by Buick. The Buick Enclave, GMC Acadia, and Chevrolet Traverse all share the GM Lambda platform. The Enclave was previewed at the 2006 North American International Auto Show, officially as a concept car, making it the first Lambda vehicle to be displayed.