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The 2027 GMC Sierra 1500 arrives with two all-new sixth-generation Small Block V8 engines in 5.7L and 6.6L displacements. That engine upgrade marks the most significant powertrain change in the Sierra 1500’s recent history, separating it clearly from the outgoing model. This page covers every trim, tech feature, and capability change, with current inventory at Greg Hubler Buick GMC.
The headline change is the introduction of GMC’s sixth-generation Small Block V8, offered in two displacements: a 5.7L and a 6.6L. The 6.6L V8, standard on the Denali Ultimate, is the most powerful naturally aspirated V8 in the light-duty full-size truck segment. Both engines use a new fuel injection system and advances in combustion and cooling to improve refinement alongside output.
Beyond the engines, the 2027 Sierra 1500 is a ground-up redesign covering exterior styling, interior architecture, and technology. The cabin now offers over 60 inches of combined digital displays, the most in its class. Safety hardware also expands: Intersection Automatic Emergency Braking, Front Pedestrian and Bicyclist Braking, Side Bicyclist Alert, and Reverse Automatic Braking are all newly standard for 2027.
New exterior colors include Azurite Blue Metallic, Dark Ridge Metallic, Mesa Red, and Coastal Dune. The AT4X gains 35-inch Goodyear Wrangler Territory MT tires and Multimatic Jounce Control Dampers as standard equipment. Super Cruise hands-free driver assistance with trailering capability expands to the AT4, AT4X, Denali, and Denali Ultimate as standard, with availability on the Elevation trim.
The 2027 Sierra 1500 spans six trims. Each one is built around a specific use case.
The entry point to the lineup. It delivers the redesigned exterior, new safety standards, and the enhanced 2.7L TurboMax four-cylinder. This trim suits buyers who want Sierra capability without additional luxury content.
Steps up with a distinct exterior treatment in Onyx Black and adds an After Dark interior colorway. Super Cruise is available on this trim, which is notable for buyers who want the technology at a lower entry point.
GMC’s on-road-to-off-road trim adds standard Super Cruise, a Forest Storm interior with Alpine Lake accents, and off-road-tuned hardware. The AT4 is the right pick for Marion-area drivers who split time between paved roads and rougher terrain.
Premium interior finishes, multiple colorway choices (After Dark, Terra Summit, and Twilight Harbor), and standard Super Cruise define this trim. It targets buyers who prioritize a refined daily experience.
The most off-road-capable Sierra ever built. Standard equipment includes 35-inch Goodyear Wrangler Territory MT tires, Multimatic Jounce Control Dampers, front and rear e-locking differentials, a 2-inch suspension lift, real carbon fiber interior trim, a Timber Mahogany colorway, and a standard panoramic sunroof. The available AEV Edition package adds front and rear AEV bumpers, 18-inch beadlock-capable aluminum wheels, recovery hooks, additional skid plates, dual downturn exhaust, and all-weather floor liners.
The flagship. Standard equipment includes the 6.6L V8, all five digital displays (including the 16.3-inch articulating center screen and 11.5-inch front passenger screen), Bose Premium Series 16-speaker audio with head-restraint-mounted speakers, open-pore forged birch wood trim, and a three-year Super Cruise subscription.
Four engines are available for 2027, all paired with a 10-speed automatic transmission.
Drivetrain choices are rear-wheel drive or four-wheel drive. The AT4X adds front and rear electronic locking differentials that work with multiple drive modes, a combination not offered by any competitor in the segment.
The 2027 Sierra 1500 interior is a complete redesign across every trim. The crew cab configuration delivers best-in-class standard front head and leg room. Premium material choices scale by trim, from the Elevation’s After Dark treatment through to the Denali Ultimate’s open-pore forged birch wood.
The MultiPro Center Console replaces the traditional center console with a foldable workstation that extends the work surface and provides access to USB charge ports without disrupting the premium finish or seating comfort. Storage is integrated behind the articulating 16.3-inch screen on equipped trims.
The MultiPro Tailgate continues with configurations for a bed step, bed extender, and workbench. The available panoramic sunroof is standard on the AT4X and available on other trims. Exclusive interior colorways by trim level mean buyers in Marion and surrounding Indiana communities can select a cabin atmosphere that fits how they actually use the truck.
The 2027 Sierra 1500 resets the benchmark for in-cab technology with over 60 inches of combined digital displays across the lineup. The individual display breakdown on the Denali Ultimate:
The Bose Premium Series audio system uses 16 speakers, including class-exclusive front head restraint-mounted speakers tuned for the Sierra cabin specifically.
Super Cruise hands-free driver assistance with trailering covers over 600,000 miles of compatible roads in the U.S. and Canada. It supports Automatic Lane Change and Turn Signal Initiated Lane Change. It works while towing, a capability no competitor in the segment matches. After the standard three-year subscription on the Denali Ultimate, an active OnStar Super Cruise plan is required.
The available welcome and farewell headlight and taillight animations and available quad exhaust outlets are exterior tech touches that round out the redesigned presence.
Every 2027 Sierra 1500 comes standard with an expanded suite of driver assistance systems.
New for 2027:
Carried over as standard across the lineup:
Super Cruise, while primarily a convenience feature, also functions as a driver assistance layer on compatible roads. All safety systems require attentive driving and do not substitute for driver responsibility.
The prior Sierra 1500 was a competitive truck. The 2027 model is a different truck in every meaningful way. The sixth-generation V8 engines, a fully redesigned interior, the class-leading digital display suite, new standard safety features, and AT4X hardware upgrades represent a complete generational step.
Buyers who were waiting to upgrade from a 2022, 2023, or 2024 Sierra will find the 2027 model difficult to match within the segment. Buyers cross-shopping from a Ford F-150 or Ram 1500 will find the Denali Ultimate’s technology stack and AT4X’s off-road hardware to be genuine differentiators rather than trim-level marketing.
For Indiana buyers who tow on Indiana state highways, run farm roads, or need a capable daily truck that also functions as a mobile office, the 2027 Sierra 1500 covers more use cases from a single platform than its predecessor did.
The 2027 Sierra 1500 is expected at GMC dealerships before the end of 2026. Greg Hubler Buick GMC in Marion, IN is a GMC dealer serving buyers across north-central Indiana. Check current inventory, get on the contact list for arrival updates, or bring in your current vehicle for a trade appraisal while you plan your purchase.
The 2027 Sierra 1500 offers four engines: an enhanced 2.7L TurboMax turbocharged four-cylinder, a new sixth-generation 5.7L V8, a new sixth-generation 6.6L V8, and the class-exclusive 3.0L Duramax Turbo-Diesel Inline-6. All pair with a 10-speed automatic transmission.
The biggest changes are the introduction of two all-new sixth-generation Small Block V8 engines and a completely redesigned interior and exterior. The cabin’s digital display suite, at over 60 inches combined, is also entirely new and class-leading.
The 2027 Sierra 1500 comes in six trims: Pro, Elevation, AT4, AT4X, Denali, and Denali Ultimate.
Yes. Super Cruise is standard on the AT4, AT4X, Denali, and Denali Ultimate, and available on the Elevation. The Denali Ultimate includes a three-year subscription. After the initial period, an active OnStar Super Cruise plan is required.
The AT4X adds 35-inch Goodyear Wrangler Territory MT tires, Multimatic Jounce Control Dampers, front and rear electronic locking differentials, a 2-inch suspension lift, real carbon fiber interior trim, a Timber Mahogany interior colorway, and a standard panoramic sunroof. The available AEV Edition package adds AEV bumpers, beadlock-capable wheels, and additional skid plates.
GMC expects the first 2027 Sierra 1500 models to arrive at dealerships before the end of the 2026 calendar year. Contact Greg Hubler Buick GMC in Marion for availability updates.
New standard safety features for 2027 include Intersection Automatic Emergency Braking, Front Pedestrian and Bicyclist Braking, Side Bicyclist Alert, and Reverse Automatic Braking, added to an already broad suite of driver assistance technology.
Available exterior colors include Azurite Blue Metallic, Dark Ridge Metallic, Mesa Red, Coastal Dune, Summit White, Onyx Black, Sterling Metallic, Glacier White Tricoat, and Cardinal Red. Azurite Blue Metallic, Dark Ridge Metallic, and Mesa Red are new for 2027. Some premium colors carry an additional cost.