Two patents filed by GMC suggest a more capable AT4 is in the pipeline.
As the competition in the off-road truck segment keeps heating up, GMAuthority reports that General Motors has just filed a second application to trademark "AT4X." The first filing goes back to 2016 with the United States Patent and Trademark Office (USPTO), but the latest one was filed on May 21 this year with the Mexico Institute of Industrial Property (IMPL). Expanding the application strongly suggests that GMC intends to build an even more off-road capable version of the Sierra's AT4 variant from the factory.
Evidence that this could be an even more off-road focused truck is the fact that the AT4 replaced the All Terrain trim for the all-new 2019 Sierra, while the final Sierra All Terrain X added a large chunk of extra capability. Translating the application from Spanish it says "Land motor vehicles and structural parts thereof."
The mention of structure suggests how important that X could be, and makes for good evidence that we should expect to see a version of the AT4 that is more slanted towards going off-road rather something balanced to being equally good across a range of terrain.
It becomes a mouthwatering prospect when we take a look at the extra goodness that X mark brought to the Sierra All Terrain, including the Z71 Off-Road suspension package with Rancho monotube shocks, an Eaton locking rear differential, hill descent control, and underbody transfer case shield, 18 x 8.5-inch black aluminum wheels shod with Goodyear Wrangler DuraTrac Mud Terrain tires, and a small power bump via a performance exhaust system.
All we have right now is a couple of trademark applications for the name though, so no real details other than the most likely concept given GMC's history. So, if we're going by history, then we're going to excited to see and drive a Sierra AT4X.
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