GMC introduces the all-new 2026 Acadia Denali Ultimate, the brand’s most premium trim yet for the mid-size SUV. Performance is enhanced by a 2.5-liter turbocharged engine delivering 328 horsepower and 326 lb-ft of torque, paired with an 8-speed automatic transmission and performance suspension. Six selectable drive modes help tailor the driving experience to any condition. The 2026 GMC Acadia Denali Ultimate will arrive at dealerships later this year, following the launch of other Acadia trims i