2024 At4 Gmc Truck Gas Price 2024. The 2024 gmc sierra 1500 gas tank size is 24 gallons, comparable to other trucks in this class. Test drive new 2024 gmc sierra 1500 at4 at home from the top dealers in your area.

View local inventory and get a quote from a dealer in your. The new 2024 gmc sierra hd pickup truck pulls your world with turbocharged power and an impressive lineup of trims that includes the first ever denali ultimate.