2027 GMC Sierra 1500 Redesign: New Engines, AT4X on 35-Inch Tires, and What It Costs

GMC has fully redesigned the Sierra 1500 for 2027, and the changes go well beyond a new grille. The truck gets two brand-new small-block V8s, a six-trim lineup topped by an AT4X that rides on factory 35-inch tires, and a Denali Ultimate stacked with screens. Pricing starts at $51,295 and the first trucks are expected to reach dealers before the end of 2026.

What’s actually new under the hood?

The headline change is a pair of all-new sixth-generation Small Block V8s, GMC’s first ground-up V8 redesign in years. A 5.7L V8 making 402 horsepower and 428 lb-ft powers the AT4 and Denali trims, while a 6.6L V8 rated at 481 horsepower and 501 lb-ft tops the range in the Denali Ultimate. Pro and Elevation trims keep GMC’s proven 2.7L TurboMax four-cylinder (350 horsepower, 455 lb-ft), and the AT4X uses the 3.0L Duramax turbodiesel (305 horsepower, 495 lb-ft) for low-end torque and highway efficiency. Every engine pairs with a 10-speed automatic.

Towing and payload vary by engine, so the right choice depends on what you’re hauling. Early GMC figures put the 5.7L V8 at up to 13,500 pounds of max towing, the Duramax diesel around 12,100 pounds, and the TurboMax and 6.6L V8 near 9,400 pounds, with payload from roughly 1,450 to 2,310 pounds depending on configuration. These are preliminary figures for specific configurations ? we’ll confirm exact ratings for the build you want once order guides land at our Bedford showroom.

How much will the 2027 Sierra 1500 cost?

GMC has released starting prices, including destination, across the six-trim lineup: Pro at $51,295, Elevation at $59,995, AT4 around $74,500, Denali at $76,795, AT4X at $85,495, and Denali Ultimate at $87,895. That’s a noticeable jump from the outgoing 2026 Sierra 1500’s $41,095 starting price, but it also reflects a genuinely new truck, new V8s, new interior architecture, and more standard equipment across the board. Final pricing and available packages can shift slightly before launch, and we’ll have accurate, order-specific numbers as allocations come in.

What makes the AT4X the off-road flagship?

The AT4X has always been GMC’s answer to hardcore off-road trucks, and the 2027 version raises the bar. It’s the first Sierra to wear 35-inch Goodyear Wrangler Territory MT tires from the factory, riding on a 2-inch suspension lift with Multimatic Jounce Control dampers tuned for high-speed off-road driving. GMC says it’s the only truck in its class with front and rear electronic locking differentials as standard equipment ? a real advantage when you need power to both ends of the truck on ice, mud, or loose gravel. The AT4X also gets its own hood, fascia, flat-bottom steering wheel, and an exclusive Timber Mahogany interior.

What’s new inside the Denali Ultimate?

Denali Ultimate becomes its own top-shelf trim rather than just a Denali option package, and the interior shows it. GMC combines more than 60 inches of combined display area, including a 16.3-inch center touchscreen and an 11.5-inch front passenger screen, with a motorized center display that slides up to reveal hidden storage underneath. Super Cruise hands-free driving comes standard with a three-year subscription included. Materials step up too, with available forged wood trim and quilted leather that put real distance between the Ultimate and the rest of the lineup.

Is the new Sierra 1500 built for a Northeast Ohio winter?

Bedford buyers know that a truck’s real test isn’t the reveal photos ? it’s a February commute on I-271 or hauling a boat down to Lake Erie in July. The 5.7L V8’s 13,500-pound tow rating covers most campers and boats Northeast Ohio owners tow, and the Duramax diesel on the AT4X adds strong low-end pull plus better highway mileage for longer trips. Four-wheel drive is available across the lineup, and the AT4X’s locking differentials are genuinely useful on the unplowed back roads around Solon, Twinsburg, and greater Cuyahoga County after a lake-effect snow event. Whether you’re plowing a driveway, pulling a trailer to the marina, or commuting through a Bedford winter, there’s a Sierra 1500 built for it.

Frequently Asked Questions

When will the 2027 GMC Sierra 1500 arrive at Ohio dealerships?
GMC expects the first 2027 Sierra 1500 models to reach dealers before the end of 2026, with additional cab and bed configurations following as production ramps up. Contact us at Jay Buick GMC for the latest on allocation timing for our Bedford showroom.

Is the 2027 Sierra 1500 more expensive than the 2026 model?
Yes. Starting price rises from $41,095 for the outgoing 2026 Sierra 1500 to $51,295 for the 2027 Pro trim, reflecting the new V8 engines, updated interior, and additional standard features.

Which engine should I choose for towing in Northeast Ohio?
For maximum towing, the 5.7L V8 available on AT4 and Denali trims leads the lineup at up to 13,500 pounds. If you want strong towing plus better highway fuel economy for long trips, the 3.0L Duramax diesel on the AT4X is worth a close look.

What’s the real difference between AT4 and AT4X?
AT4 is GMC’s moderate off-road trim with all-terrain tires and a mild suspension lift. AT4X is the dedicated off-road flagship, adding factory 35-inch tires, a 2-inch lift, Multimatic dampers, and front and rear locking differentials for genuine trail capability.

Curious how the redesigned 2027 GMC Sierra 1500 fits your towing, work, or family needs? Stop by our Bedford showroom or browse current inventory at jaybuickgmc.com as we learn more about allocation and build availability, and our team will help you find the right trim and engine combination when order guides open up.

Jay Buick GMC is a proud, family-owned dealership serving the greater Cleveland area since 1956, on the historic Bedford Automile. As part of Jay Auto Group, we offer a strong selection of new and pre-owned Buick and GMC vehicles, an expert service and parts department, and a straightforward, no-hassle buying experience built around you. Visit us at jaybuickgmc.com or stop by our Bedford showroom.