The all-new 2014 GMC Sierra has undergone specific design changes to boost both fuel efficiency and interior quietness, after spending a major portion of its development time in a wind tunnel.
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We like how SUVs and crossovers offer height to see ahead, and offering plenty of space for when you need to haul those 3-5 extra people.
For the new model year, GMC is upgrading two of its top vehicles.
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