GMC put its new 2014 Sierra pickup through more time in the wind tunnel than any other truck before it and, as a result, found significant design improvements to bolster efficiency. They also learned that a lot of “facts” about pickup truck aerodynamics are actually myths.
To achieve improved airflow, aerodynamic engineers like Diane Bloch examined every millimeter of the truck to find areas of improvement, debunking some popular myths along the way.
To study the way air passes over, under and around the Sierra, engineers used General Motors’ state-of-the-art Aerodynamics Lab, a 750-foot-long tunnel through which a 43-foot-diameter fan powered by a DC electric motor with the equivalent of 4,500 horsepower can generate winds of up to 138 mph. Aerodynamic advancement is one reason why the 2014 Sierra will be the most fuel-efficient V-8 pickup on the market. Read more »



May 19th, 2013
Aaron Turpen 



