The Buick Rainier is a mid-size SUV from General Motors. Introduced for 2004 to replace the Oldsmobile Bravada, the Rainier is the first truck sold under the Buick marque (the unibody Rendezvous might also qualify) since the 1920s, and is the first body-on-frame V8-powered Buick since the 1996 Roadmaster. The Rainier (and Rendezvous) will be replaced by a new crossover SUV, the Enclave, on the GM Lambda platform for 2008. (edit this text)