The Silverado 1500’s gasoline tank is typically 24 gallons, while diesel variants use a larger tank around 36 gallons, with the exact capacity depending on the cab/bed configuration and model year.
The question about tank size varies because the Silverado 1500 offers multiple engines and body styles; there isn’t a single universal number that covers every configuration. This article breaks down the typical capacities by engine type and configuration.
Gasoline engine configurations
The following figures refer to common gasoline-powered Silverado 1500 models. Exact capacity can vary by cab and bed length, so consult your vehicle specifications for your specific build.
- 2.7L Turbo Four-Cylinder: ~24 gallons
- 4.3L V6: ~24 gallons
- 5.3L V8: ~24 gallons
- 6.2L V8: ~24 gallons
In summary, most gasoline Silverado 1500s use a 24-gallon fuel tank across these engine options, with minor variations by specific configuration.
Diesel and expanded capacity
The Duramax diesel option generally uses a larger tank to extend driving range. The exact capacity depends on the chosen cab/bed arrangement and model year.
Duramax 3.0L Turbo Diesel
Most diesel-equipped Silverado 1500s use a 36-gallon fuel tank, though some cab/bed configurations may differ slightly (often between 30 and 36 gallons). Always check the official specification for your exact build.
Note: Variations by configuration mean the best way to confirm capacity is to refer to the vehicle’s window sticker or the manufacturer’s official spec for your exact VIN.
Summary
For primary gasoline models, expect about 24 gallons. The diesel Duramax option typically offers a larger tank, commonly around 36 gallons, with some variation based on cab and bed. Always verify the precise capacity for your specific Silverado 1500 configuration.