How big is the gas tank on a 2024 Silverado 3500 diesel?
The 2024 Chevrolet Silverado 3500HD with the Duramax diesel uses a 36-gallon fuel tank. This article explains the official capacity, what it means for range, and how it affects real-world usage.
Fuel tank capacity
The diesel-powered Silverado 3500HD's main fuel tank is listed at 36 gallons (approximately 136 liters) in Chevrolet's official specifications for the 2024 model year. This is the standard capacity across most cab and bed configurations for the Duramax diesel in the US market. The tank size is designed to balance payload, weight distribution, and ground clearance for heavy-duty work.
Key fuel-tank specifications for quick reference:
- Capacity: 36 gallons (136 liters)
- Fuel type: Diesel
- Tank configuration: One main underbody tank
- Auxiliary tanks: None offered as a factory option for the 3500HD Duramax in the US market
In practice, the 36-gallon capacity supports long highway runs and heavy towing duties, but actual range depends on payload, terrain, and driving habits.
Understanding range and real-world usage
Actual range per tank can vary widely. Diesel engines typically deliver better efficiency at highway speeds and maintain significant torque for towing, but payload and rough terrain can reduce miles per gallon. To estimate range, multiply the vehicle's average miles per gallon by the 36-gallon tank capacity. For example, if the truck achieves an average of X mpg under your typical use, the range would be roughly 36 × X miles. Always plan fueling stops based on your load and trip length.
Tips for planning fueling stops
When towing heavy trailers or hauling large payloads, fuel economy often declines. Use your truck’s onboard fuel economy readouts and plan stops with a margin for contingencies, especially on long trips or in areas with fewer fueling options.
Summary: The 2024 Silverado 3500HD diesel is equipped with a 36-gallon fuel tank, offering substantial range for heavy-duty tasks. Real-world range varies with load, terrain, and driving style, so plan fueling stops accordingly.
How big is the fuel tank on a Chevy 3500 diesel?
Technical Service Bulletin
| Manufacturer | Titan Fuel Tanks |
|---|---|
| Stock Tank Capacity | 36 Gallons |
| TITAN Tank Capacity | 60 Gallons |
| Year | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| Make / Model | Chevy GMC 2500, Chevy GMC 3500 |
How big is the fuel tank on a 6.6 Duramax?
A standard 6.6L Duramax fuel tank holds about 36 gallons, but replacement tanks are available with capacities of 52, 56, or 62 gallons. The specific capacity depends on the truck's model year, cab and bed configuration, and whether a standard or aftermarket tank is installed. For example, a 2020-2025 Crew Cab, Short Bed truck often has a stock 36-gallon tank, while aftermarket options can increase this to 56 or 62 gallons, as seen on Vin Specific Enterprises and TITAN Fuel Tanks.
- Standard fuel tank: Approximately 36 gallons.
- Aftermarket options:
- 52 gallons: Available for older models (2001-2010).
- 56 gallons: Available for newer models (2020-2025).
- 62 gallons: Available for a wide range of models, often for Crew Cab Short Bed configurations.
How big is the gas tank on a 2024 Chevy 3500 diesel?
The standard fuel tank size for a 2024 Chevy 3500 diesel is 36 gallons. However, some configurations, particularly chassis cab models, have an available larger tank capacity of 63.5 gallons.
- Standard: The most common fuel tank size is 36.0 gallons, found in models like the Crew Cab and Double Cab configurations.
- Available: A larger 63.5-gallon tank is available for commercial and vocational applications on chassis cab models, providing a greater range with fewer stops.
How many gallons of gas does a Chevy 3500 hold?
A stock Chevy 3500 Silverado usually holds 36 gallons of gas, though older models may have smaller tanks, and some chassis cab and aftermarket configurations offer larger capacities. For example, the 2026 Chevrolet Silverado 3500 HD Chassis Cab has an available 63-gallon tank, and aftermarket tanks can increase capacity to 60 gallons or more.
- Standard Silverado 3500 HD: 36 gallons
- Older models: Some older or specific configurations may have a slightly different capacity, such as the 34-gallon tank in a 2008 Chevrolet Silverado 3500 HD Crew Cab.
- Chassis Cab models: The 2026 Chevrolet Silverado 3500 HD Chassis Cab has an available 63-gallon tank.
- Aftermarket options: Aftermarket fuel tanks can increase the capacity, with options like TITAN Fuel Tanks offering 60 gallons or more for models from 2020-2025.
