The 2015 GMC Sierra 3500 HD outscored all other HD trucks in the annual Canadian Truck King Challenge.
Sierra was pitted against the Ford 350 and Ram 3500 in a gruelling two-day test held in London, Ontario that measured toughness, fuel economy, towing ability and overall comfort.
For the first test, the trucks were first equipped with a fifth-wheel hitch and required to tow a 15,000lb RV trailer over a 300-km route. Next, the fifth-wheel was removed and each truck was loaded with a 3,000lb payload of roofing shingles and driven another 200-km test track. The trucks were even raced down a quarter mile drag strip.
After all was said and done the Sierra 3500 was praised for its road-manners, do-it-all capability, and combination of interior amenities and smart-shifting Allison 1000 six-speed automatic transmission.
Other Highlights Include:
- 397 horsepower (296 kW) at 3,000 rpm
- 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm
- High-pressure (30,000 psi/2,000 bar) Piezo-actuated fuel system for greater fuel efficiency, improved performance and reduced emissions
- Exhaust brake system that enables controlled vehicle slowdown on downhill grades without actuating the brakes
- Selective catalytic reduction after-treatment system using diesel exhaust fluid (DEF) injection to provide the best overall diesel characteristics and performance.
- Best-in-class maximum payload of 3,508 kilograms (7,374 lbs)
- Best-in-class conventional towing capacity of 8,890 kilograms (19,600 lbs)
The Canadian Truck King Challenge is an annual, independently run truck test facilitated by a small batch of seasoned Canadian automobile journalists.