Spied: 2017 GM Silverado and Sierra prototypes
From June 24:
GM pickup truck engineers have been relatively quiet while Ford and Ram Truck have been making news lately with their new products. But a media photographer recently got a peek at GM’s Silverado and Sierra prototypes while they were doing towing tests on the road. He says GM’s goal is to bump up the trucks’ horsepower and torque to counter Ford's recently upgraded 6.7-liter Power Stroke V-8 turbo-diesel engine.
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