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How big is the gas tank on a Chevy truck?

In general, Chevy trucks use fuel tanks that range from about 24 gallons on the Silverado 1500 to about 36 gallons on the heavier-duty Silverado 2500HD and 3500HD. The exact capacity depends on year, engine, cab style, and bed length. For precise figures, consult the specific model’s spec sheet, window sticker, or owner's manual.


Understanding tank sizes by model family


The following overview highlights typical tank sizes across the main Chevy Silverado configurations. Variations can occur based on cab and bed choices, engine, and model year.



  • Chevrolet Silverado 1500 (gasoline engines) — typically around 24 gallons.

  • Chevrolet Silverado 1500 (diesel or alternative powertrains) — typically around 24 gallons.

  • Chevrolet Silverado 2500HD — typically around 36 gallons.

  • Chevrolet Silverado 3500HD — typically around 36 gallons.


These figures reflect common configurations in recent model years; exact capacity can differ by a few gallons depending on options, cab type, and bed length. Always verify with the vehicle’s official specifications for your exact build.


Verifying the tank size for your vehicle


To obtain the precise capacity for your specific truck, use these reliable sources:



  • Window sticker or build sheet — shows the exact fuel tank size for that vehicle.

  • Owner's manual — includes fuel system specifications and tank size.

  • GM’s official site or dealer VIN lookup — provides model-year-specific data.

  • Your Chevrolet dealer — can pull the exact spec for your VIN.


Having the exact figure helps with planning range and fueling stops, especially for long trips or when evaluating aftermarket tank options.


Summary


Chevy trucks exhibit variability in fuel tank size across models. As a rule of thumb, Silverado 1500s typically use about 24 gallons, while heavy-duty Silverado 2500HD and 3500HD configurations use about 36 gallons. For precise numbers, consult the vehicle’s window sticker, owner's manual, or GM’s official specifications for your exact year, trim, and configuration.

How many gallons does a 5.3 Silverado take?


A Chevy Silverado with a 5.3L engine takes 24 gallons for Double and Crew Cab models, or 28.3 gallons for the Regular Cab model. The specific fuel tank capacity depends on the year, trim, and cab style of your truck. 

  • Double Cab / Crew Cab: 24 gallons
  • Regular Cab: 28.3 gallons



Do trucks have 30 gallon tanks?


The average fuel tank size for trucks ranges from 20 to 40 gallons.



How many gallons can a Chevy truck hold?


2024 Chevy Silverado 1500 Fuel Tank Capacity
Regular Cab: 28.3 gallons. Crew Cab: 24 gallons. Double Cab: 24 gallons.



How big is the gas tank on a Chevy Silverado 1500?


The Chevy Silverado 1500 fuel tank size is 24 gallons for Double and Crew Cabs, and 28.3 gallons for the Regular Cab. These capacities can vary slightly depending on the specific model year and configuration, but the 24- or 28.3-gallon options are the standard sizes. 

  • 24-gallon tank: Standard on Double Cab and Crew Cab models.
  • 28.3-gallon tank: Standard on Regular Cab models.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.