After receiving an updated diesel engine and a new hood in 2017, we expect the 2018 GMC Sierra 2500HD to remain virtually unchanged.
After a light update to the diesel-equipped model’s hood in 2017, we expect the Sierra 2500HD to remain the same on the outside. This lack of change is really no surprise, as the Sierra 2500HD also received a complete redesign in 2015, giving is a more rugged and modern appearance.
Inside, we expect much of the same, as the Sierra 2500 HD to retain its looks and high-quality materials in higher trims, particularly the luxurious Denali model.
With no big changes in store, we also expect the Sierra 2500HD’s standard equipment to remain the same, as well. Look for it to come standard with 17-inch steel wheels, xenon headlights, LED daytime running lights, air conditioning, cloth or vinyl upholstery, rubberized floor covering, power locks, a 4.2-inch central display, and a four-speaker audio system. For buyers who need more features, the SLE, SLT, and range-topping Denali models will remain part of the lineup.
We anticipate no changes to the lineup of available engines in the 2018 Sierra 2500HD. The base engine will remain a 6.0-liter V8 with 360 horsepower and 380 pound-feet of torque. Optionally, buyers can get a 6.6-liter diesel V8 with 445 hp and 910 lb-ft of torque. Both engines use a six-speed automatic transmission, but the diesel model’s is a heavier-duty version.
The IIHS has not tested the Sierra 2500HD for safety, and we don’t expect it to anytime soon. As expected, the standard safety features are sparse, as they include air bags, and the Teen Driver monitoring system.