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.

The rare car features a color combo that was rarely ordered with the particular V8, and the owner brought it home all the way ...

This recently restored 1970 Chevrolet Chevelle SS is in pristine condition and has one of the more desirable engine options ...

It's impossible to make a list of perfect cars since everyone has their own definition of what that means. It is, on the ...