Gmc 2025 Yukon At4. Learn the ins and outs about the new 2025 gmc yukon 4wd 4dr at4. A new at4 ultimate model joins the range, and the optional diesel engine is now available on all trim levels.

Marks 5th at4 anniversary and 25 years of denali, signaling gmc’s upscale. A new at4 ultimate model joins the range, and the optional diesel engine is now available on all trim levels.