So I’m looking at getting a canyon with the duramax engine in it. I’d-like a diesel purely because of the better gas mileage. However, the Sierra has a higher epa mileage rating than the canyon. I don’t believe that’s true so I thought I’d ask what you canyon/Colorado diesel owners generally get for mileage? In your answer if you could also add the model year and any mods or upgrades you have on your rig (tires, bed caps, etc)?