#2017GMCSierraHD

Do you want heavy-duty work truck wrapped in black sheetmetal fit for a henchman? You’re in luck, my productive and sinister friend.

GMC has expanded its All Terrain X series to include the Sierra 2500HD. It joins the midsize Canyon and full-size Sierra 1500 in offering the X trim, but it’s squarely aimed at its offroad-ready, crosstown rival — the Ram Power Wagon.

A document containing official horsepower and torque numbers for General Motors’ new 6.6-liter V8 Duramax turbo-diesel was found buried on the GM Powertrain website — before the company quickly deleted it.

You remember the hood scoop on that teased 2017 GMC Sierra 2500HD? The one General Motors really wanted you to notice?

Well, GM spilled the beans on the mystery inlet, explaining that all of its diesel-powered 2017 heavy-duty pickups will receive the scoop to force-feed air into the 6.6-liter Duramax engine.