As automobile technology continues to innovate to make our experience on the road much easier and convenient, there’s also been a huge push forward in regards to off-road performance as well. Recent years have seen an influx of turnkey off-roaders from brands across the space. GMC has had its fair share of go-anywhere vehicles, a few of which it accomplished with the help of overlanding outfitter American Expedition Vehicles.
However, GMC’s latest collaboration with AEV comes in the form of a one-off concept called Sierra Grande. Essentially, this off-road edition starts with a long-bed 2024 Sierra 2500 HD as its base — already a more-than-capable hauler. But now, the experts at AEV have added unique touches to the truck to maximize performance. For starters, the stamped steel front bumper was taken from the Sierra HD AT4X AEV Edition and given a prototype brush guard for protection. Likewise, underbody protection such as the IFS skid plate, stamped steel front skid plate, and transfer case skid plate were taken from the AT4X, as were the suspension components, including the control arms, steering knuckles, rear suspension, and Multimatic DSSV dampers. Compared to the standard Sierra HD, the Sierra Grande is lifted 1.5” higher without compromising any comfort or durability. AEV worked directly with GMC to get the job done.
To improve performance elsewhere, the overlanding rig retains the 6.6L Duramax diesel engine from the original Sierra HD, but an AEV Snorkel helps prevent any off-road air and dust from infiltrating the powertrain. Riding on AEV Salta XD wheels with 40” BFGoodrich tires, the Sierra Grande boasts an 8-foot aluminum tray bed, AEV vertical tire mounts, a custom AEV rear bumper, a GM Performance/ComUp 12,500 front-end winch, a 9,500-pound rear winch, and a pair of HighMark fenders as well. For better visibility, AEV put in four 7000 Series off-road lights.
While the Sierra Grande is a one-off vehicle, the attributes will be prescient to what’s to come from both AEV and GMC in the future. Learn more about the collaboration on AEV’s website.