Last week we reported on a bunch of trucks representin’ all the way from Texas, and there was even a sole military off-roading experiment between GM and the US Army in the form of the Chevrolet Colorado ZH2 hydrogen pick-up.

Well, new trucks just aren’t letting up and this week the General has once again made headlines with its third model offering in the brand’s X line of off-roaders. The new 2017 Sierra 2500HD All Terrain X is said to be the company’s most off-road-capable Sierra yet, available in crew cab four-wheel drive guise with a petrol V8, or a next-gen 6.6-litre V8 diesel making 445 horsepower and a monster 1,234Nm of torque.

The X package includes an appearance kit that adds aggressive exterior trim, as well as 18in black painted wheels, trail-rated Goodyear tyres, unique grille, a whole bunch of LEDs, and two body colour choices, which are Black Onyx and Summit White.

Inside the truck the driver is surrounded by miles of cabin and kit such as an 8.0in touchscreen, rear-vision camera with front and rear park assist, leather seats and wireless charging capabilities.

The oily bits include a new automatic locking rear differential as standard equipment and the Z71 off-road suspension package with an underbody shield to watch out for your oil sump.

That sole V8 petrol engine option is a nice, round 6.0-litre unit, so it’s a sizeable upgrade from the smaller 1500HD All Terrain X, which was launched earlier this year with a 5.3-litre unit worth 365bhp at 5,600rpm and 520Nm of torque at 4,100rpm. Wheel spikes and chimneys not included.