GM Authority reader Willard asks why the Chevy Colorado uses a four cylinder engine while Nissan Frontier gets a V6. We answer in today's GM Authority Mailbag.
Though it employed turbocharging and didn't feature a V8, Buick's Grand National series brought back genuine American muscle during the 1980s ...
General Motors once produced a polarizing series of engines that, despite praise, was flawed. These are ten cars that used GM ...