We’ve captured photos of an all-new 2024 GMC Acadia prototype undergoing testing- and it looks like it’s going to be big(ger).

2024 GMC Acadia Photos – Our Spy Photographer Reports

We caught a prototype for the all-new 2024 GMC Acadia testing on public roads, showing off its new full-size frame outside of the GM Proving Grounds.

On the current Acadia, GMC product planners engaged in a little downsizing experiment–shaving 7.2-inches of length and 3.5-inches of width from its full-size stablemates—thus placing it in the midsize class since 2017. The move to a smaller Acadia was said to have caused significant consternation among GMC dealers and throughout GM. However, the Acadia appears to be going big once again, regaining its larger, no-compromises, three-row footprint to match the Chevy Traverse and Buick Enclave.

This latest prototype shows off the new Acadia’s longer wheelbase, and more generous third-row and rear cargo capacities. It’s currently unknown if the new Acadia is adopting the same Long Wheelbase Chi architecture that underpins the Traverse and Enclave, or if GM has advanced to a new modular SUV platform that has been rumored for the firm’s future product pipeline.

The Acadia is testing in heavy camouflage, and while it can’t hide the SUV’s new plus-size dimensions, the finer styling details are still in question. The lighting is of the early placeholder variety, but some of the grille slats can be seen through the camouflage mesh, suggesting that this is a lower-to-mid-level trim, and not a luxurious Denali spec prototype.

The upsized Acadia is expected to reach the market next year, debuting for the 2024 model year.