2024 At4 Hd. In addition, the sierra hd at4x trim will arrive later on in the model year. Choose from either a 2025 gmc sierra 2500 hd or 3500 hd at4, and begin building your own.
I’m in the process of adding a. I just got my ’24 at4x 6.2l on saturday and haven’t had an opportunity to crawl under it to find to the actuator, but as long as it’s not in the.
