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The 2027 Chevrolet Silverado HD debuts an all-new 8.3L Duramax Turbo-Diesel V8 producing 555 hp and 1,230 lb-ft of torque. That torque figure is best-in-class for a diesel HD pickup and a significant jump over the outgoing engine. Read on for every new feature, all six trims, and information about upcoming 2027 Silverado HD availability at Greg Hubler Chevrolet.
The 2027 Silverado HD is a ground-up capability upgrade, not a refresh. The headline change is the all-new available Duramax 8.3L Turbo-Diesel V8, a clean-sheet engine designed, developed, and built in-house at GM’s expanded DMAX facility in Brookville, OH. It produces 555 hp and 1,230 lb-ft of torque, both best-in-class figures for a diesel heavy-duty pickup.
The gas side also gets meaningful work. The enhanced 6.6L gas V8 now delivers 412 hp and 472 lb-ft of torque, which Chevrolet claims is best-in-class standard torque among 2027 model-year HD gas engines.
Two other changes are segment firsts. Silverado HD moves to an all-new rack-and-pinion electric power steering system, replacing the previous hydraulic setup. It is the first HD pickup to offer this technology. The new eBoost electronic brake-boost system is also a segment first, adding larger 14.6-inch front rotors and four-piston front calipers for more consistent stopping under load.
Terrain Mode arrives on the ZR2 for the first time, enabling one-pedal off-road driving in 4HI and 4LO. Tow/Haul and Off-Road calibrations are also updated to coordinate powertrain, steering, braking, and chassis response as a unified system.
The Trail Boss package is now available on the Custom trim for the first time, expanding off-road access to a lower trim level.
The 2027 Silverado HD is offered in six trims. Greg Hubler Chevrolet serves customers throughout the Camby area across all trim levels.
The Work Truck is the entry point built for commercial and job-site use. Standard features include Adaptive Cruise Control, eBoost braking, electric power steering, and OnStar Basics for 8 years. The oil level sensor with Driver Information Center readout is also standard on gas V8 models.
Custom adds value-oriented styling upgrades over the WT. The Trail Boss package is now available at this trim level for the first time, making off-road hardware more accessible than in prior years.
LT broadens the capability foundation with additional comfort and utility features for buyers who use their truck for both work and daily driving.
LTZ brings a premium exterior appearance with added interior refinement. It positions itself as a capable daily driver that does not sacrifice towing or payload performance.
ZR2 is the off-road performance trim. It adds a 1.5-inch factory lift, larger Multimatic DSSV dampers, rear e-locker, 35-inch MT tires, and aluminum skid plates. Electric power steering and eBoost braking unlock the new Terrain Mode on this trim, a first for Silverado HD.
High Country is the top trim, focused on luxury-oriented interior materials and premium features while retaining full HD capability.
Two powertrains are offered for 2027, both paired with a 10-speed automatic transmission.
The available all-new Duramax 8.3L Turbo-Diesel V8 pairs with an Allison 10-speed automatic. It produces 555 hp and 1,230 lb-ft of torque and supports up to 38,000 lbs of maximum available gooseneck towing on properly equipped models. A diesel exhaust brake works with the Allison transmission and grade-braking strategies to reduce brake stress on long downhill runs.
The enhanced 6.6L gas V8 produces 412 hp and 472 lb-ft of torque. It pairs with a 10-speed automatic and supports up to 19,000 lbs of maximum available conventional towing with a maximum payload of 6,990 lbs. This engine is assembled in Tonawanda, NY.
Drive modes coordinate these powertrains with the truck’s steering, braking, and suspension: Normal for everyday use, Tow/Haul for loaded towing, Off-Road for loose surfaces, and Terrain Mode on the ZR2 for technical obstacles.
| Powertrain | Horsepower | Torque | Transmission | Max Towing / Payload |
|---|---|---|---|---|
| 8.3L Duramax Turbo-Diesel V8 | 555 hp | 1,230 lb-ft | Allison 10-speed automatic | Up to 38,000 lbs gooseneck towing |
| Enhanced 6.6L Gas V8 | 412 hp | 472 lb-ft | 10-speed automatic | Up to 19,000 lbs conventional towing; 6,990 lbs max payload |
The 2027 Silverado HD cabin centers on a 13.4-inch touchscreen and a 12.3-inch digital Driver Information Center. Higher trims feature leather-appointed seating with contrast stitching and a premium two-tone interior.
Rear passenger space is generous, with comfortable legroom for full-crew configurations. The DuraLock bed is designed for durability, and the Multi-Flex Tailgate provides multiple positions for loading gear and cargo. Bed length measures 6.67 feet on standard configurations.
The oil level sensor now feeds directly into the Driver Information Center on gas V8 models, which is a new standard feature for 2027 and reduces the need for manual checks at the job site.
The 13.4-inch touchscreen serves as the primary interface and supports Google built-in, giving drivers access to Google Maps, Google Assistant, and compatible apps without a paired phone. Google Gemini is available as an AI assistant.
Up to 14 camera views are available, covering hitching, lane changes, reversing, and trailer monitoring. Views include Transparent Trailer View, Bed View, and Surround Vision to support complex towing situations. An available in-vehicle trailering app and trailer tire pressure and temperature monitoring help drivers manage large loads before and during towing.
OnStar Basics is included standard for 8 years and covers remote commands, Automatic Crash Response, built-in voice assistance, and real-time navigation.
Several safety features arrive as segment firsts on the 2027 Silverado HD.
The eBoost electronic brake-boost system delivers smoother, faster brake response with improved cooling and consistency, which matters most when braking repeatedly while towing on grades. Larger 14.6-inch front rotors and four-piston front calipers support this system.
Electric power steering reduces steering kickback off-road and provides quieter operation than the previous hydraulic system. It also unlocks Terrain Mode on the ZR2 by coordinating steering response with braking.
Adaptive Cruise Control is standard across all trims. Available Trailer Side Blind Zone Alert improves lane-change safety when towing wide loads. The diesel exhaust brake, included with the Allison transmission, adds a layer of control on long descents.
Buyers who already own a 2025 or 2026 Silverado HD face a meaningful decision with the 2027 model. The eBoost braking system, electric power steering, and the new Duramax 8.3L diesel are all clean-break upgrades that did not exist on prior model years. These are not calibration tweaks. They are new hardware.
If you tow at or near maximum capacity, the jump from the previous diesel to the new 8.3L Duramax producing 1,230 lb-ft of torque is the most significant capability gain Silverado HD has seen in recent memory. The 38,000-lb gooseneck rating on properly equipped diesel models exceeds what the prior generation could achieve.
For buyers who do not need diesel power, the enhanced gas V8 at 412 hp and 472 lb-ft is itself a stronger option than what the 2026 offered. The Trail Boss package moving to the Custom trim also opens off-road capability to buyers who want proven hardware without stepping into LT or higher trim pricing.
The 2027 Silverado HD is expected to be released at the end of November 2026. Until then, shoppers can contact Greg Hubler Chevrolet in Camby for release updates and upcoming availability information.
The 2027 Silverado HD’s new Duramax 8.3L diesel, 555 hp, 1,230 lb-ft of torque, segment-first electric power steering, and 38,000-lb tow rating represent a major step forward for Chevrolet’s heavy-duty truck lineup.
The 2027 Silverado HD is expected to be released at the end of November 2026. Shoppers interested in the upcoming model can contact Greg Hubler Chevrolet now for release updates and availability information. In the meantime, current Silverado HD inventory is available to browse online.
The 2027 Silverado HD offers two engines: an enhanced 6.6L gas V8 producing 412 hp and 472 lb-ft of torque, and an available all-new Duramax 8.3L Turbo-Diesel V8 producing 555 hp and 1,230 lb-ft of torque. Both pair with a 10-speed automatic transmission.
Properly equipped models with the available Duramax 8.3L diesel can tow up to 38,000 lbs gooseneck. Models with the enhanced 6.6L gas V8 support up to 19,000 lbs of conventional towing. Ratings depend on cab, bed, and drivetrain configuration.
The maximum available payload on the 2027 Silverado HD is 6,990 lbs on properly equipped gas V8 models.
eBoost is a segment-first electronic brake-boost system that replaces the previous vacuum-based brake assist. It uses larger 14.6-inch front rotors and four-piston front calipers to deliver smoother, more consistent stopping power, especially under repeated braking while towing on grades.
Yes. The 2027 Silverado HD is the first heavy-duty pickup to offer a rack-and-pinion electric power steering system. It replaces the previous hydraulic setup and provides more precise feedback, quieter operation, and reduced steering kickback off-road.
The 2027 Silverado HD is offered in six trims: WT, Custom, LT, LTZ, ZR2, and High Country. The Trail Boss off-road package is now available on the Custom trim for the first time.
Terrain Mode is a new ZR2-exclusive drive mode that enables one-pedal off-road driving in 4HI and 4LO. Lifting off the accelerator automatically applies braking, giving the driver precise control on steep grades and technical obstacles. It is the first time this mode has appeared on a Silverado HD.
The 2027 Silverado HD is expected to be released at the end of November 2026. Contact Greg Hubler Chevrolet in Camby, IN for release updates and upcoming availability information.
Yes. OnStar Basics is standard on all 2027 Silverado HD trims for 8 years. It includes remote commands, Automatic Crash Response, built-in voice assistance, real-time navigation, and access to audio streaming apps.
