What size gas tank on a Chevy sierra?

The gas tank size for a Chevy Silverado varies depending on the model year, body style (regular cab, double cab, crew cab), engine, and optional equipment. There's no single answer. To find out the exact capacity for *your* Chevy Silverado, you should:

* Check your owner's manual: This is the most reliable source.

* Look inside the fuel filler door: The gas tank size is sometimes listed there.

* Check the sticker on the driver's side doorjamb: This sticker often contains information about the vehicle's specifications, including fuel tank capacity.

Without knowing the specifics of your truck, I can't give you a definitive answer.