2027 Chevrolet Silverado HD: What’s New, Specs, Trims & Capability
The 2027 Chevrolet Silverado HD introduces an all-new Duramax 8.3L Turbo-Diesel V8 producing 1,230 lb-ft of torque and 38,000 lbs of towing capacity. That towing figure is a significant jump over the prior generation and sets a new class benchmark for HD pickups. This page covers every new spec, trim, and capability update, with inventory available at Fillback Chevrolet in Boscobel, WI.
What’s New for 2027
The single biggest change for 2027 is the all-new Duramax 8.3L Turbo-Diesel V8. This engine is purpose-built for heavy haulers, delivering 555 horsepower and 1,230 lb-ft of torque, both best-in-class figures. Chevrolet 2027 Silverado HD official specs
Paired with that diesel output is a max towing rating of 38,000 lbs and a max payload of 6,170 lbs, making the 2027 HD the strongest Silverado ever built.
Beyond the diesel, Chevrolet made two first-in-segment engineering changes that fundamentally alter how this truck drives:
First-in-Class Electric Power Steering
The 2027 Silverado HD is the first heavy-duty pickup to use electrically assisted rack-and-pinion steering. It reduces steering kickback on rough terrain, runs quietly without hydraulic noise, and makes maneuvering on construction sites or tight switchbacks noticeably easier.
First-in-Class eBoost Electronic Brake Boost
eBoost replaces traditional hydraulic brake assistance with an electronic system that delivers smoother, faster brake response with more consistent stopping power, even on long downhill grades while under load.
New Terrain Mode for ZR2
These two systems also unlock the ZR2’s new Terrain Mode, a first for any HD truck.
Custom Trail Boss Availability
The Trail Boss package is now available on the Custom trim for the first time, bringing off-road hardware to a more accessible build.
Trim Lineup
The 2027 Silverado HD is offered in six trims: WT, Custom, LT, LTZ, ZR2, and High Country.
WT, Work Truck
WT is the no-frills foundation, built for contractors and fleet buyers who need maximum capability without premium content.
Custom
Custom adds style touches and utility features over the WT. Notably, the Trail Boss package is now available on Custom for the first time, giving buyers off-road hardware at a lower entry point.
LT
LT sits in the middle of the lineup with a balance of comfort and capability features, making it the most popular choice for buyers who split time between job sites and daily driving.
LTZ
LTZ brings a premium interior package, additional tech features, and a styled exterior to buyers who want HD capability without stepping into the top trim.
ZR2
ZR2 is the off-road performance model. It adds Multimatic DSSV dampers, a rear e-locker, 35-inch MT tires, aluminum skid plates, a 1.5-inch factory lift, and Terrain Mode. It is the only trim where electric power steering and eBoost unlock that full Terrain Mode suite.
High Country
High Country is the top trim, focused on luxury appointments including leather seating, premium finishes, and the highest content level in the lineup.
Performance & Powertrain
Buyers choose between two engines for 2027.
Available All-New Duramax 8.3L Turbo-Diesel V8
The available all-new Duramax 8.3L Turbo-Diesel V8 pairs with an Allison 10-speed automatic transmission, including diesel exhaust braking and grade-braking strategies that reduce brake stress on long descents. Output is 555 hp and 1,230 lb-ft of torque. Max towing with the diesel reaches 38,000 lbs. Max payload from the diesel configuration is 6,170 lbs.
Enhanced 6.6L Gas V8
The enhanced 6.6L gas V8 produces 412 hp and 472 lb-ft of torque, paired with a 10-speed automatic transmission. Max towing on the gas engine reaches 19,000 lbs, and max payload on the gas configuration reaches 6,990 lbs. This engine now includes a standard oil level sensor with a Driver Information Center readout, a practical addition for buyers who run their trucks hard between service intervals.
EPA HD truck capability comparisons
Both engines are paired with a 10-speed automatic, and both benefit from the new electric power steering and eBoost braking.
Interior, Comfort & Cargo
The 2027 Silverado HD carries a bed length of 6.67 ft and an overall truck length of 235.5 in, giving working buyers the bed space to handle materials, equipment, and fifth-wheel setups.
Inside, the cabin moves upscale. The 13.4-inch touchscreen dominates the center stack, flanked by a 12.3-inch digital Driver Information Center directly in the driver’s sight line. High Country buyers receive the most premium seating and trim materials in the lineup, including leather appointments and contrasting stitching.
The rear seat area provides enough legroom for full-size adults on long hauls, which matters when this truck is a daily work vehicle rather than a weekend hauler. The Multi-Flex tailgate returns, giving buyers multiple configurations for loading and bed access.
Technology & Infotainment
The 13.4-inch touchscreen runs Google built-in, giving drivers direct access to navigation, streaming, and app functions without needing a phone connection. Google Gemini AI assistant is available for voice-activated controls and hands-free task management in the cabin.
OnStar Basics is standard for 8 years on every 2027 Silverado HD. That package includes remote commands, Automatic Crash Response, built-in voice assistance, real-time navigation, and access to audio streaming apps.
The camera system is one of the most capable in this class. Up to 14 available camera views cover hitching, lane changes, reversing, and trailer monitoring. Buyers who regularly back a fifth-wheel or gooseneck into position will find this system meaningfully reduces setup time and guesswork.
Adaptive Cruise Control is standard across the lineup. An available in-vehicle trailering app and Trailer Side Blind Zone Alert add further situational awareness when pulling large loads.
Safety & Driver Assistance
The 2027 Silverado HD carries a standard safety suite that includes Forward Collision Alert, Automatic Emergency Braking, Front Pedestrian Braking, Lane Keep Assist with Lane Departure Warning, Following Distance Indicator, and IntelliBeam high beam assist.
The eBoost system is a safety feature as much as a technology one. More predictable brake feel and improved braking consistency under heavy load directly reduce stopping distance in real towing scenarios.
The diesel configuration adds diesel exhaust braking through the Allison 10-speed transmission, which reduces reliance on friction brakes on mountain grades, a significant benefit for buyers in areas with steep terrain.
ZR2 buyers get Terrain Mode, which uses inputs from electric power steering and eBoost to optimize control on dirt, sand, and rock surfaces.
Who It’s For / vs the Prior Year
The 2027 Silverado HD is a meaningful generational update, not a refresh. The prior-generation HD was a capable truck, but it relied on hydraulic steering and traditional brake assist systems that the 2027 replaces with electronic architecture.
For buyers in Boscobel and across southwest Wisconsin who pull heavy equipment trailers, livestock haulers, or fifth-wheel campers into the driftless terrain, the jump to 38,000 lbs of towing capacity and the smoother braking behavior on grades is a real-world improvement, not a spec sheet exercise.
The new diesel’s 1,230 lb-ft of torque is the figure that defines this generation. No prior Silverado HD has reached that number, and no competitor currently matches it.
Buyers who primarily haul materials and need maximum payload on the gas engine will find the 6,990 lb payload rating on the 6.6L V8 noteworthy, as it edges out the diesel’s payload figure.
The Trail Boss on Custom is a smart addition for buyers who want off-road hardware without the price of the ZR2. It brings the Z71 suspension with mono-tube shocks, an Autotrac 2-speed transfer case, and BFGoodrich All-Terrain tires on 20-inch wheels to a more accessible trim.
Get the 2027 Silverado HD at Fillback in Boscobel, WI
Fillback Family of Dealerships stocks Chevrolet HD trucks at its Boscobel location, serving buyers from across southwest Wisconsin. Whether the job calls for the all-new 8.3L Duramax or the enhanced gas V8, the 2027 Silverado HD is the most capable truck this nameplate has ever produced. Check current inventory online, value your trade, or schedule time with a truck specialist.
Frequently Asked Questions
What is the towing capacity of the 2027 Chevrolet Silverado HD?
The 2027 Silverado HD tows up to 38,000 lbs when equipped with the available Duramax 8.3L Turbo-Diesel V8 and the Allison 10-speed automatic transmission. The enhanced 6.6L gas V8 tows up to 19,000 lbs.
What is the horsepower and torque on the 2027 Silverado HD diesel?
The available Duramax 8.3L Turbo-Diesel V8 produces 555 hp and 1,230 lb-ft of torque, both best-in-class figures for 2027.
How many trims does the 2027 Silverado HD come in?
The 2027 Silverado HD is offered in six trims: WT, Custom, LT, LTZ, ZR2, and High Country.
What is eBoost braking on the 2027 Silverado HD?
eBoost is a first-in-class electronic brake boost system that replaces traditional hydraulic brake assistance. It delivers smoother, faster brake response and more consistent stopping power, particularly useful when braking under heavy towing loads or on downhill grades.
Is the 2027 Silverado HD available with electric power steering?
Yes. The 2027 Silverado HD is the first heavy-duty pickup to offer electric power steering, which is first-in-segment. It reduces steering kickback, eliminates hydraulic noise, and improves maneuverability in tight spaces.
What does the ZR2 trim add to the 2027 Silverado HD?
The ZR2 adds Multimatic DSSV dampers, a rear e-locker, 35-inch MT tires, aluminum skid plates, a 1.5-inch factory lift, and Terrain Mode, which is unlocked by the truck’s electric power steering and eBoost system.
When will the 2027 Silverado HD be available?
The 2027 Silverado HD is expected to be available to order later in 2026. Fillback Family of Dealerships in Boscobel, WI is the local source for inventory and ordering updates.
Does the 2027 Silverado HD come with OnStar?
Yes. OnStar Basics is standard for 8 years on every 2027 Silverado HD and includes remote commands, Automatic Crash Response, built-in voice assistance, real-time navigation, and access to audio streaming apps.
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