The all-new for 2004 Buick Rainier was essentially a Buick-ized version of the jettisoned Oldsmobile Bravada. In addition to getting upscale styling tweaks, the Rainier was the only short-wheelbase midsize GM SUV to offer a V8 engine. A 5.3-liter/290-horse V8 was optional, while a 4.2-liter/275-horse inline-six came standard. The Rainier offered a choice of rear or on demand four wheel drive. Rear air suspension, ABS, 17-inch alloys, and a locking rear differential were also standard. Traction control came with 2WD models. The five-passenger interior included leather, chrome bits, and woodgrain trim.