Chevrolet Silverado 2500HD/3500HD Fuel Tank Size by Year

Newest year we have: the 2024 Chevrolet Silverado 2500HD/3500HD manual lists 36.0 gal (2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)) or 29.4 gal (2500 Series and 3500 Series Standard Box (Double Cab Diesel)), and more versions. Across 2021–2024 it changes by year and version, so check yours below. Each year links to its owner's manual page.

2024 Chevrolet Silverado 2500HD/3500HD, representative photo
Shown: a 2024 Chevrolet Silverado 2500HD/3500HD (same generation). Photo: Deathpallie325, CC BY-SA 4.0
YearFuel tank sizeSource
2024 36.0 gal 2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)29.4 gal 2500 Series and 3500 Series Standard Box (Double Cab Diesel)36.0 gal 2500 Series and 3500 Series Long Box (Except Regular Cab Diesel)28.0 gal 2500 Series and 3500 Series Long Box (Regular Cab Diesel)+2 more versions 2024 manual →
2023 36.0 gal 2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)29.4 gal 2500 Series and 3500 Series Standard Box (Double Cab Diesel)36.0 gal 2500 Series and 3500 Series Long Box (Except Regular Cab Diesel)28.0 gal 2500 Series and 3500 Series Long Box (Regular Cab Diesel) 2023 manual →
2022 36.0 gal 2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)29.4 gal 2500 Series and 3500 Series Standard Box (Double Cab Diesel)36.0 gal 2500 Series and 3500 Series Long Box (Except Regular Cab Diesel)28.0 gal 2500 Series and 3500 Series Long Box (Regular Cab Diesel) 2022 manual →
2021 36.0 gal 2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)29.4 gal 2500 Series and 3500 Series Standard Box (Double Cab Diesel)36.0 gal 2500 Series and 3500 Series Long Box (Except Regular Cab Diesel)28.0 gal 2500 Series and 3500 Series Long Box (Regular Cab Diesel) 2021 manual →

Years are the 2021–2024 model years we have the owner's manual for. Open a year to see every version and the page it's printed on.

Confirm with your own manual, dipstick or door-jamb label.
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