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GMC has pulled the wrap off its next-generation half-ton, and the changes go far deeper than a new grille. The 2027 GMC Sierra 1500 brings two brand-new V8 engines, a reworked interior, and the broadest Super Cruise availability the truck has ever offered to drivers around Southport, Indiana. First deliveries are expected before year-end.
Ray Skillman opened on South US 31 back in 1979, and we have been selling GMC trucks from this stretch of road ever since. Three GMC Dealer of the Year awards later, a redesign this significant still gets us fired up. Here is what has been confirmed.
The headline is the sixth-generation Small Block V8, offered in 5.7L and 6.6L displacements. GMC calls the 6.6L the most powerful naturally aspirated V8 in its class, and it comes standard on Denali Ultimate. Both engines got new combustion, cooling, and control systems plus a new fuel-injection setup, which should keep power delivery predictable whether you are crawling over rocks or merging with a trailer in tow.
Below the V8s sits the enhanced TurboMax four-cylinder with what GMC calls best-in-class standard torque, and the Duramax 3.0L Turbo-Diesel remains the only diesel in the segment. That matters if you tow long distances. All four powertrains route through a 10-speed automatic, and detailed horsepower, torque, and towing figures have not yet been published.
Interiors were redone on every trim, top to bottom. Denali Ultimate leads with more than 60 inches of combined screens: a 16.3-inch center display that articulates to reveal hidden storage behind it, a 12.2-inch driver information center, an 11.5-inch passenger screen with a retracting cover, a 15-inch head-up display, and an 8.5-inch rear camera mirror for when the bed is loaded high.
The new MultiPro center console folds open into a flat work surface with USB charge ports underneath, turning the cab into a mobile office. Real wood accents are available; forged wood shows up on Denali Ultimate, and a panoramic sunroof is optional. Bose Premium Series audio adds 16 speakers, two of them in the front head restraints.
Every Sierra 1500 comes with a long list of driver assistance features, several of which are new. Intersection Automatic Emergency Braking, Front Pedestrian and Bicyclist Braking, Side Bicyclist Alert, and Reverse Automatic Braking join the standard set, alongside adaptive cruise control, forward collision alert, and blind zone steering assist.
Super Cruise is the bigger story. It is standard on AT4, AT4X, Denali, and Denali Ultimate, available on Elevation, and it now works while towing on more than 600,000 miles of compatible roads. Handing the wheel over on a long haul with a trailer attached changes how a work week feels.
Most of the trucks we sell split their weeks between job sites and the loop, then get hitched to something on Saturday. The I-465 run at rush hour is where Super Cruise earns its keep, and the Duramax suits anyone pulling a camper or boat south without planning the trip around fuel stops.
For drivers dealing with a hard freeze one week and construction barrels the next, the AT4 and AT4X trims bring traction hardware that goes well past a badge. AT4X rides on 35-inch Goodyear Wrangler Territory MT tires with a 2-inch lift, Multimatic Jounce Control Dampers, and e-locking differentials front and rear.
Six trims make up the lineup, and the familiar SLE and SLT names are gone. Here is how the 2027 GMC Sierra 1500 trims separate based on what has been confirmed.
| Trim | Built For | Super Cruise | Interior Colorway | Confirmed Highlights |
|---|---|---|---|---|
| Pro | Work-first entry point | Not offered | Not yet announced | Full standard safety suite, 10-speed automatic, redesigned interior |
| Elevation | Everyday driving with added comfort | Available | After Dark | Replaces the former SLE and SLT trims in the walk |
| AT4 | Off-pavement capability with daily comfort | Standard | Forest Storm with Alpine Lake accents | Trim-specific exterior details, hands-free trailering capability |
| AT4X | Serious off-road use | Standard | Timber Mahogany with Bright White accents | 35″ Goodyear Wrangler Territory MT tires, 2″ lift, front and rear e-lockers, Multimatic Jounce Control Dampers, standard panoramic sunroof, AEV Edition package available |
| Denali | Luxury and long-haul refinement | Standard | After Dark, Terra Summit, or Twilight Harbor | Available real wood trim, three interior colorway choices |
| Denali Ultimate | Flagship technology and comfort | Standard, 3-year subscription included | Stealth Black with Bright White accents | Standard 6.6L V8, 60″+ of combined displays, 15″ head-up display, 16-speaker Bose with head-restraint speakers, forged wood |
GMC has not yet said which engines pair with which trims outside of Denali Ultimate, and pricing is still unannounced. Both will land ahead of the on-sale date, and we will have them as soon as they are official.
We have sold a lot of Sierras over the years, and the customers who end up with the truck they really want are the ones who start the conversation early. Tell us how you tow, what you haul, and whether you log more miles on gravel or highway, and our GMC specialists will point you toward the right trim before the first shipment lands.
Our finance team works with national banks and local lenders to find terms that fit real budgets and real credit histories, and you can get pre-approved online in a few minutes. When your Sierra needs service, our factory-trained GMC technicians handle it here, with loaner vehicles and a courtesy shuttle. Stop by and let us put you on the list.
GMC expects the first 2027 GMC Sierra 1500 models to reach dealerships before the end of the 2026 calendar year. We are already taking names from customers who want a first look when trucks land at Ray Skillman Southside Buick GMC. Reach out and we will keep you posted as delivery timing firms up.
GMC has confirmed four powertrains: all-new sixth-generation 5.7L and 6.6L Small Block V8 engines, an enhanced TurboMax with best-in-class standard torque, and the class-exclusive Duramax 3.0L Turbo-Diesel. Every one of them pairs with a 10-speed automatic transmission. The 6.6L V8 comes standard on Denali Ultimate.
Six trims make up the lineup: Pro, Elevation, AT4, AT4X, Denali, and Denali Ultimate. The SLE and SLT trims from the outgoing truck are not returning. AT4X can also be equipped with the AEV Edition package for buyers who want the most off-road hardware GMC offers.
Ray Skillman Southside Buick GMC sits right on US 31 South, a short hop for anyone near Southport, Indiana, and the rest of the south side. We are a GMC store first and foremost, with three GMC Dealer of the Year awards to show for it. Stop by and our truck team will walk you through what is coming.
Not yet. GMC has said detailed technical specifications for each engine, including horsepower, torque, towing, and payload, will be announced closer to the on-sale date. We would rather tell you that than guess. As soon as official figures are published, our team will have them.
Yes. Super Cruise on the new Sierra includes trailering capability, allowing hands-free driving on more than 600,000 miles of compatible roads across the U.S. and Canada, including while towing. It comes standard on AT4, AT4X, Denali, and Denali Ultimate, and is available on Elevation. Denali Ultimate includes a three-year subscription.
Trade-ins are welcome, and you can get a head start with our online trade value tool before you ever come in. Our finance team works with national banks and local lenders, so we can usually find terms that fit whatever your budget looks like. Get pre-approved online or swing by and we will handle it together.