What size gas tank on a 2003 Chevy 1500 truck with v8?

The 2003 Chevy Silverado 1500 with a V8 engine typically had a 26-gallon fuel tank. However, there's a small chance it could be a slightly different size depending on trim level and options. To be absolutely certain, check the sticker inside the driver's side doorjamb or your owner's manual.