Yet it still seats five and boasts an engine powerful enough to pull a boat or horse trailer. Smooth, quiet, and highly capable. IntroductionThe Buick Rainier shares its body shell and mechanical platform with GM's other mid-size SUVs, the Chevrolet TrailBlazer and GMC Envoy AM/FM✔ Bucket Seats✔ Power Windows✔ Cruise Control✔ CD Changer✔ Leather Seats✔ Sunroof/Moonroof✔ MP3 Player✔ Aluminum Wheels