Why you need your owner's manual: Fuse box layouts vary slightly even within the same model year, depending on options and trim level. Looking at a general diagram online might lead you to the wrong fuse.
If you don't have your owner's manual, you can often find a PDF version online by searching for "[Year] [Make] [Model] owner's manual PDF". Alternatively, you can visit a Chevy dealership or auto parts store; they may have access to the information.