Gas tank size on a Chevy Avalanche?

The gas tank size on a Chevy Avalanche varies depending on the model year and engine. There's no single answer. To find the exact capacity for your specific Avalanche, 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 printed there.

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

Without knowing the year and model of your Avalanche, I cannot provide a precise answer.