The third-generation GMC Acadia was first unveiled for the 2024 model year, with the 2026 GMC Acadia getting some major changes. As GM Authority Overall, the big headline for the 2026 Acadia is the new Acadia Denali Ultimate, a new range-topping trim level packed with luxury features. Meanwhile, the upcoming 2027 GMC Acadia is expected to introduce only a few relatively minor updates, but among them is a new option for the AT4 off-roader called the AT4 Reserve Package.
Looking at the contents list, the new AT4 Reserve Package for the 2027 GMC Acadia helps bridge the gap with the Denali by combining many comfort, convenience, and driver assistance features into one offering. Designated RPO code GZ4, the AT4 Reserve Package combines content from the Luxury Package (RPO code WPL) and Super Cruise Package (RPO code SQ1), while introducing features such as a 16-speaker Bose Performance audio system and unique 18-inch black machined aluminum wheels.
See the full list of contents for the new AT4 Reserve Package below (relevant RPO codes are listed in brackets):
- Acoustic style windshield (AKK)
- Heated wiper park (CMO)
- Heated rear outboard seats (KA6)
- Heated and ventilated front seats (KU9)
- 8 inch Diagonal Head-Up Display (UV6)
- Rear camera rearview mirror (DRZ)
- Super Sailing (UKL)
- Enhanced Automatic Parking Assistance (UKZ)
- Driver Attention Assist (ULM)
- 16-speaker Bose Performance audio system with subwoofer (UQP)
- First and second row all-weather floor coatings (LPO, RIA)
- Third row all-weather floor liner (LPO, RIB)
- All-weather cargo mat (LPO, VLI)
- Front and rear splash guards (LPO, VQK)
- 18 inch black machined aluminum wheels (RV1)
While official pricing for the AT4 Reserve Package has not been announced, we can make an educated guess by looking at the 2026 model.
For the 2026 GMC Acadia AT4, the Super Cruise Package is priced at $3,670, while the Luxury Package costs $1,150. Additional accessories like the Floor Liner Package ($450) and splash guard ($395) bring the total to $5,665.
Considering the 2027 GMC Acadia’s package also includes an upgraded 16-speaker Bose system and unique wheels (both of which are new additions to the AT4 trim level), the price for the new AT4 Reserve Package will likely be more than $6,000.
As a reminder, the GMC Acadia carries a 2.5L I4 LK0 turbocharged gasoline engine, which produces 328 horsepower and 326 pound-feet of torque. Underneath the skin, you’ll find the GM C1 platform. Production of the 2027 GMC Acadia will resume at GM’s Lansing Delta Township plant in Michigan.
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