GMC has just debuted the next generation GMC Sierra HD trucks, and though that’s quite exciting, we couldn’t help but let our eyes draw to another announcement as part of the 2024 Sierra HD product line. The off-road optimized Sierra HD AT4X trim is scheduled to arrive later in 2023 – a few months after the refreshed 2024 GMC Sierra HD comes to dealers in the first quarter of next year,. 2024 GMC Sierra HD AT4X: DetailsThough the reveal of the 2024 GMC Sierra HD trucks didn’t come with any further information beyond the confirmation that there is, in fact, an AT4X trim on the way, we do know s…
