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Comfortable, quiet ride
In addition to delivering surprising performance, Rainier's refined powertrains and precision-engineered chassis system contribute to a comfortable, quiet ride - a Buick distinction throughout its ...

Engine Fan Noise
Your vehicle has a clutched engine cooling fan. When the clutch is engaged, the fan spins faster to provide more air to cool the engine. In most everyday driving conditions the clutch is not eng ...

Regenerative Braking
Regenerative braking takes some of the energy from the moving vehicle and turns it into electrical energy. This energy is then stored in the vehicle's high voltage battery system, contributin ...