How big is the gas tank on a Silverado 1500 diesel?
The gas tank on a Silverado 1500 with the Duramax 3.0L Turbo Diesel is 24 gallons (about 91 liters).
The Silverado 1500, GM’s light-duty pickup, offers a diesel option that emphasizes efficiency and driving range. This article breaks down what a 24-gallon tank means for daily use, how to confirm the exact figure for your specific build, and where to look for official specifications.
Tank capacity overview
Chevrolet’s official specifications for the Silverado 1500 equipped with the 3.0L Duramax Turbo Diesel list a 24-gallon fuel tank. This capacity is typical across most cab configurations and bed lengths in recent model years, though it’s always best to verify against your specific VIN or window sticker for any regional or year-to-year variation.
Diesel tank vs gasoline tank
In practice, the Duramax diesel version uses the same basic fuel system footprint as other Silverado 1500 engines, but the tank capacity remains 24 gallons rather than a larger or smaller figure. The key difference you’ll notice is fuel type (diesel) and the engine’s efficiency characteristics, which affect range rather than tank size.
Understanding this distinction helps when planning long trips or workdays where fuel stops matter, but the tank itself is consistently sized across most Duramax-equipped Silverado 1500 models.
Key facts you should know about the tank:
- Fuel type: Diesel (not gasoline)
- Tank capacity: 24 gallons (approximately 91 liters)
- Common configurations: Standard across many cab/bed combinations in current generations
- Fuel gauge and range: Dependent on driving conditions and EPA-rated efficiency for the Duramax engine
These points give a practical snapshot of what the tank size means in everyday use; exact range will vary based on driving style, payload, and terrain.
How to verify the exact tank size for your truck
To confirm the precise tank capacity for your specific Silverado 1500 diesel, use these steps:
- Check the window sticker on a new vehicle—capacity is listed alongside other fuel specifications
- Consult the owner's manual or quick reference guide for your model year
- Look up the official Chevrolet website resources or your vehicle’s VIN-specific documentation
- Ask your Chevrolet dealer for the exact spec if you’re unsure about your particular build
Typically, the official figure you’ll see for the Duramax-equipped Silverado 1500 is 24 gallons, but always verify with your exact configuration to be certain.
Summary
For the Silverado 1500 with the Duramax diesel, the standard fuel tank is 24 gallons (about 91 liters). This capacity is generally consistent across recent model years and cab/bed layouts, though you should verify your specific VIN or window sticker for absolute accuracy. The practical effect is a solid driving range tied to diesel efficiency, rather than a noticeably larger tank size.
How big is the fuel tank on a 2025 Chevy Silverado 3.0 Duramax?
Fuel & MPG
| EPA combined MPG | 8 MPG |
|---|---|
| Range in miles (city/hwy) | 408.0/480.0 mi. |
| Fuel tank capacity | 24.0 gal. |
| CO2 Emissions | 8 tons |
How many miles per gallon does a Silverado 1500 3.0 diesel get?
Back on my fuel economy loop. Yes we know this engine can tow very well it's quite powerful. But I think what separates this 3 L Duramax from the rest of the 1500 segment.
What is the range of the Silverado 3.0 diesel?
Because the highest EPA highway rating of a 3.0-liter Duramax-powered four-wheel-drive Silverado comes in at 27 mpg, we made this our target. With 24 gallons of fuel on board, we calculated a theoretical target range of 648 miles.
How big is the gas tank on a Chevy 1500 3.0 diesel?
24-gallon
3.0L Duramax® Turbo Diesel I6 engine
With a Double or Crew Cab, you'll get a 24-gallon fuel tank, while the Regular Cab has a 28.3-gallon tank.
