2027 GMC Sierra 2500 is expected to arrive soon with styling enhancements, upgraded interior materials, technology enhancements, and powertrain upgrades implemented for the coming year. These good things will be attractive and will be a breath of fresh air, plus both gasoline and diesel engines are equipped with a quick-shifting 10-speed transmission, providing confidence in driving and towing everyday vehicles. The gasoline V-8 engine is capable, but the diesel engine’s high torque can easily haul trailers and heavy loads, making it a desirable choice.
While the base Pro trim is minimal in terms of frills and features, the interior quality of the SLT trim level and above remains a plus. Once criticized for its bland styling and cheap materials, the cabin is now luxurious and thoughtfully equipped. However, some controls are inconveniently placed. The Denali Ultimate transforms the Sierra into a true luxury truck, while the AT4X trim enhances off-road performance with few compromises elsewhere.
The exterior styling may not be to everyone’s taste. More importantly, GMC doesn’t offer Super Cruise here, a glaring omission as competitors lean more toward hands-free driving technology. There’s also the Chevrolet Silverado 2500HD, which offers essentially all the same capabilities and features at a lower price.
Overall, the 2027 GMC Sierra 2500 is a strong contender among heavy-duty trucks, especially for buyers who prioritize refinement, capability, and high-end trim options.
2027 GMC Sierra 2500 Reviews
Here are GMC’s top-tier trucks, ready to accompany you on your daily commute. If the half-ton Sierra 1500 isn’t enough, GMC has two more options: the 2500HD and 3500HD. While their competitors, the Ford Super Duty and Ram HD, have higher towing ratings, these trucks are still tough, offering both gasoline and diesel V-8 engines with incredible torque for easy hauling.
Each truck is available in regular, double, and crew cab configurations, with a choice of standard or extended beds. Top-of-the-line models are quite luxurious (though overpriced), and useful features like GMC’s MultiPro tailgate and a 15-view camera system grace the options list.
More rugged than the Sierra 1500, but not as fast as the Sierra 3500HD with available dual rear wheels, the 2027 GMC Sierra 2500 offers impressive capability and track readiness, as well as advanced technology, luxury, and attractive off-road features. After more extensive updates for 2024 and 2025, the Sierra 2500HD will now arrive with significant changes.
- Glacier White Tricoat and Coastal Dune paint colors added
- White Frost Tricoat and Thunderstorm Grey paints are no longer available
- The MultiPro rear door is no longer standard on SLT crew cab models; it is now optional.
- Big diesel torque
- Impressive technology across most trims
- The desired AT4X and Denali Ultimate trims
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What We Expect
The 2027 GMC Sierra 2500 is expected to introduce an all-new model, marking the first model year of the fifth-generation truck. Here are some things we expect from the next-generation Sierra 1500:
- The next-generation/sixth-generation GM Small Block gasoline engine boasts significant performance and efficiency improvements, including a 10 percent reduction in greenhouse gas emissions compared to the current model. The sixth-generation Small Block engine will be produced at GM’s Flint Engine Plant, which received a $579 million investment to produce it.
- The 3.0L I6 LZ0 Duramax turbodiesel engine and the 2.7L I4 L3B turbocharged gasoline engine, also known as the TurboMax, are expected to be carried over.
- A new plug-in hybrid (PHEV) powertrain is also expected as part of GM’s shift to offering PHEV models.
- Design: an all-new exterior design that will serve as an evolution of what is seen on the current model.
- Cabin: updated interior with the latest infotainment system
- Architecture: an updated platform known as T1-2, the latest version of the T1 platform.
- Improvements to driving characteristics and capabilities, including unladen driving, towing and hauling, plus new comfort and convenience features
We expect the 2027 GMC Sierra HD lineup, consisting of the 2500 HD and 3500 HD models, to remain the same with only minor changes compared to the 2025 and 2026 models. An all-new Sierra HD will arrive for the 2028 model year, adopting generational refinements from the 2027 Sierra 1500.
2027 GMC Sierra 2500 Interior
Up front, the Sierra HD features either a three-seat bench or a pair of bucket seats separated by a center console. While there are plenty of soft-touch surfaces throughout the cabin, and most models use durable plastics, panel fit and material quality are mediocre at best.
The double cab and crew cab models have a second row, with an additional three adult-friendly seats.
There are several handy storage compartments throughout the cabin for small items, but most of the items will be stored in the tailgate, which features built-in steps behind the doors and at each rear corner for easy loading. Owners can also equip the trunk with LED lighting, removable tie-down straps, a 120-volt power outlet, and a six-position multifunction tailgate.
Tech
The entry-level Sierra HD Pro features a 7.0-inch infotainment screen, while the SLE and Elevation models have an 8.0-inch display. Stepping up to the higher trim level offers a 13.4-inch touchscreen with Google Built-in. All three configurations support wireless Apple CarPlay and Android Auto. A 12.3-inch digital instrument panel is also available in various configurations.
2027 GMC Sierra 2500 Platform
- The Sierra Light Duty uses a light-duty version of the GM T1 platform.
- The Sierra Heavy Duty uses a heavy-duty version of the GM T1 platform.
2027 GMC Sierra 2500 Safety
Standard driver assistance and active safety features on the 2026 Sierra 2500HD include:
- Front automatic emergency braking
- Lane departure warning
- Automatic high beam
- Trailer brake controller
- Cruise control
The following features are optional on lower trims and standard on higher trims:
- Rear automatic emergency braking
- Blind spot monitoring with trailer coverage
- Adaptive cruise control
- Please note, the Super Cruise hands-free driving system is not available on GMC heavy-duty trucks, only the Sierra 1500 and Sierra EV.
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2027 GMC Sierra 2500 Payload
The most powerful Sierra 3500HD can tow up to 16,000 kg (33,000 lbs): That requires a diesel engine, standard cab, rear-wheel drive, dual rear axles, and a gooseneck towbar. The same truck with a fifth-wheel towbar has a maximum towing capacity of 15,000 kg (33,000 lbs), which is still not to be underestimated. The Sierra 2500HD, which cannot be had with the dual system, can only tow a maximum of 11,000 kg (25,000 lbs).
2027 GMC Sierra 2500 Release Date
We expect the 2027 Sierra 1500 to begin production in the second half of 2026 and the 2027 Sierra HD to begin production in the first half of 2026. We expect production of the 2027 Sierra to continue at three subsequent plants, two in the U.S. and one in Mexico.
The 2026 Sierra production start and end dates are as follows:
- Production of the 2026 Sierra 1500 begins on July 7, 2025 and ends on DATE TBD
- Production of the 2026 Sierra HD begins on August 11, 2025 and ends on a DATE TO BE DETERMINED
Sierra is produced in three plants, depending on the model and cab configuration:
- Sierra 1500: GM Fort Wayne Plant, Indiana, USA – GM Silao Plant, Guanajuato, Mexico
- Sierra HD: Factory GM Flint, Michigan, AS
2027 GMC Sierra 2500 Price
Pricing for the 2027 Sierra 1500 starts at $41,895. Pricing for the 2027 Sierra 2500 HD starts at $49,295, including a $1,995 destination delivery fee, while pricing for the 2025 Sierra 3500 HD starts at $50,495, including a $1,995 destination delivery fee.
Verdict
The 2027 GMC Sierra 2500 stands as a symbol of refined power and intelligent engineering. With upgraded design, premium materials, and robust performance across both gasoline and diesel engines, this heavy-duty truck delivers strength without sacrificing comfort. It’s built for those who demand capability and class in every mile.
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