GMC and American Expedition Automobiles (AEV) have taken the newly launched Sierra HD AT4X to the following stage of off-road functionality with a brand new idea construct.

Debuting on the 2023 SEMA present, the Sierra Grande idea provides much more overlanding {hardware} to the Sierra HD AT4X, which launched for the 2024 mannequin yr as the highest off-road version of GMC’s heavy-duty pickup sporting a 1.5-inch suspension elevate, Multimatic DSSV spool-valve dampers, a rear e-locker, and upgraded underbody safety. 

The AT4X is already out there from the manufacturing unit in AEV Version kind, with some components from the aftermarket firm. The Sierra Grande retains the AEV Version’s stamped metal entrance bumper, however with an extra brush guard. 4 AEV 7000 collection off-road lights and a winch are additionally mounted on the entrance bumper.

GMC Sierra Grande idea

The suspension retains the manufacturing unit 1.5-inch elevate, however new fender flares assist created extra clearance for bigger tires, which elevate the truck even increased. A set of 40-inch BFGoodrich tires mounted on AEV Salta XD wheels substitute the inventory 35-inch Goodyear Wrangler Territory Mud-Terrain tires.

An 8-foot aluminum tray mattress replaces the inventory mattress and incorporates a vertical spare-tire mount. On the again, the Sierra Grande includes a customized AEV rear bumper with its personal winch.

GMC Sierra Grande idea

The Sierra Grande has the 6.6-liter Duramax turbodiesel V-8 that is non-obligatory for the inventory AT4X. It now breathes by way of a snorkel, however that seems to be the one modification associated to the engine, which produces 470 hp and 975 lb-ft of torque in inventory kind. The facility is routed to all 4 wheels by way of a 10-speed automated transmission. A gasoline 6.6-liter V-8 with 401 hp and 464 lb-ft of torque can be out there on the AT4X AEV Version from the manufacturing unit.

Whereas the Sierra Grande is only a idea, it is potential that one thing related may very well be created by digging into AEV’s catalog. GMC additionally provides AEV Editions of the Sierra 1500 and the midsize Canyon for consumers on the lookout for a smaller manufacturing unit overlanding rig.