If you've got toys to tow, the 2017 GMC Sierra HD should be on your short list of heavy duty trucks.

Caption by / Photo by GMC

Although it's available with a gas-powered 6.0-liter V8 engine, we tested the new 6.6-liter Duramax turbo diesel, pumping out 445 horsepower and a staggering 910 pound-feet of torque.

Caption by / Photo by GMC

The Sierra 3500 HD can tow 22,900 pounds with a fifth wheel or 20,000 with a ball hitch.

Caption by / Photo by GMC

The 4x4 system has an electronic locker that will engage automatically if it detects wheel slippage.

Caption by / Photo by GMC

Max payload in the Sierra 3500 is nearly 4,000 pounds.

Caption by / Photo by GMC

The front fascia is dominated by a massive grill. Big enough to swallow small woodland creatures whole, I bet.

Caption by / Photo by GMC

The Sierra 2500 is also available as an All Terrain X special edition for off-road fun.

Caption by / Photo by Emme Hall/Roadshow

It's mostly an appearance package, but it does include meaty tires, skid plates and off-road suspension.

Caption by / Photo by Emme Hall/Roadshow

Whether you choose the Sierra 2500 or 3500 HD, the interior is very well-appointed with leather seats and the excellent Intellilink infotainment system.

Caption by / Photo by GMC

Click through to see more photos of the 2017 GMC Sierra HD.

Caption by / Photo by GMC

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by Emme Hall/Roadshow

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC

Photo by GMC
Up Next
Destroy the powder in the GMC Sierr...
11