Our test vehicle came with the optional six-disc changer and Bose speaker system. Straightforward and logical rule the day here. Controls are well-marked and good sized and the two rotary knobs have rubber grips. The display has a nice design that shows which preset group is selected and displays the frequencies above each of the six buttons and indicates the selected station: Very readable at a glance. You can also browse the presets without changing stations. Controls on the steering wheel include volume, mute, source, preset/track buttons. Buick provides an auxiliary input jack on the front panel.
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