For the new model year, GMC is upgrading two of its top vehicles.
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Here is final powertrain information for GM's new midsize trucks.
Final testing of the all-new Colorado Chevrolet diesel-powered midsize pickup is wrapping up as production nears for markets including the Middle East, South America, Africa, and Asia.
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.