Zac Davidson

I guess I’m not sold that I have the 36 gallon diesel tank just a hunch

Yes sir

6.6 Gas L8T, All Box/Cab Configurations: 36 Gallons 6.6 Diesel L5P Double Cab Long Box/Crew Cab Standard and Long Box Configurations: 36 Gallons. 6.6 Diesel L5P Double Cab Standard Box Configuration: 29 Gallons. 6.6 Diesel L5P Regular Cab Long Box Configuration: 28 Gallons. I have a 6.6 Diesel standard box At4 2500HD what are the differences here; crew cab? double cab? regular cab?

Thank you for this

Well to be fair it said I had 109 miles left so I guess not to empty...I’ll wait longer next time

Hello, I just got the GMC Sierra AT4 2500HD online it says 36 gallon gas tank, I went to fill up today for the first time because I was getting close to empty and it took 25 gallons. Does anyone know if the 2500s actually have the standard 28 gallon tanks and not 36 like advertised?