Speaking of luxury the Rainier is suitably equipped to carry the Buick nameplate. First and foremost it's quiet. Interior wind noise is kept to a car-like 30.5 dB compared to 35 to 37 dB, typical for a truck. That's all the better to enjoy the optional 6-speaker Bose audio system, featuring a 6-disc dash-mounted CD changer and steering wheel mounted controls. The steering wheel also incorporates switches for the dual-zone automatic climate control system as well as controls for the trip computer. Look through the steering wheel spokes and the Rainier's easy to read silver gauges with green needles show a family resemblance to its smaller Rendezvous brother. Dark walnut faux wood is complimented by chrome accents and opulent perforated leather seats and trim - the former of which are incidentally available with heated cushions and memory functions. Additional standard features include rear seat passenger audio controls and OnStar communications. What's more the optional personalized memory features include auto power door locks, remote keyless entry, outside rearview mirrors, power driver seat positions, as well as the climate control and select stereo settings.
There's also room enough inside to stretch out and get relaxed, being one of the most accommodating for five adults in its midsize SUV category in terms of head, shoulder and hip room - due to its short-wheel-base midsize SUV architecture a 7-passenger version will not be available. The same can be said about its cargo capacity. When its 60/40 split-folding rear seatbacks are down, 2,269 L (80.1 cu ft) of storage space is available - 1,127 L (39.8 cu ft) when the rear seatbacks are in their upright positions.
I'm amazed at how well GM has managed to differentiate its midsize SUVs despite their virtually identical underpinnings. The Rainier fits perfectly into the Buick family, with its anthracite-colored waterfall oval grille, chrome embellishments, large clear headlamp assemblies and bold Buick badge at center. Its muscular flanks are fairly similar to its multi-brand siblings as is its rear end styling, but both elements are distinct enough to make it possible to pick it out of the five brand lineup. Also, the Rainier's lower body cladding is body-color and tastefully applied. When all is said and done it's a great looking truck.