Tank sizes by configuration
- Light-duty Silverado 1500: 24 gallons
- Heavy-duty Silverado 2500HD/3500HD (gasoline engines): 36 gallons
- Heavy-duty Silverado 2500HD/3500HD (Duramax diesel engines): 36 gallons
Estimating range and practical considerations
Additional details
To confirm the exact tank size for your Silverado, check:
- The door jamb sticker on the driver's side
- The owner's manual or the Chevrolet official spec sheet
- The window sticker on a new-vehicle purchase
Summary
In summary, the most common gas tank size for modern Chevrolet Silverado pickups is 24 gallons in the light-duty 1500, while heavy‑duty 2500HD and 3500HD models use 36 gallons. Always verify based on your truck’s specific cab, bed, and engine configuration.