2024 Gmc At4 2024 Diesel Mpg. 13.4 diagonal centre touchscreen and 12.3 diagonal driver information centre ; Edmunds also has gmc sierra 1500 diesel pricing, mpg, specs, pictures, safety features,.
Current truck is a 2014 duramax with the 6 speed. That’s driving through two snow storms in 4wd and a trip in to.