Buick Rainier I (GMT360) gallery (2003–2007)

The Buick Rainier was introduced for the 2004 model year as a replacement for the discontinued Oldsmobile Bravada, representing Buick's entry into the traditional mid-size body-on-frame luxury SUV market. Built on GM's GMT360 platform, the Rainier shared structural components with the Chevrolet TrailBlazer and GMC Envoy, but differed significantly through Buick's proprietary QuietTuning acoustic insulation package and a softer suspension setup. It was offered strictly in a five-passenger, five-door SUV body configuration with a standard wheelbase and rear load-leveling air suspension. Powertrain choices included a standard 4.2-liter Vortec 4200 inline-six engine (275 to 291 hp) and an optional 5.3-liter Vortec V8 (290 to 302 hp), both coupled to a 4-speed 4L60-E automatic transmission with rear-wheel drive or full-time all-wheel drive. For the 2006 model year, the V8 was upgraded with Active Fuel Management cylinder deactivation. The vehicle was sold in North America until 2007, when it was replaced by the Buick Enclave crossover.