Is there a fuse for the power adapter outlet in Chevy Malibu 2007?

There's no single fuse specifically for the power adapter outlet (the 12V accessory outlet) in a 2007 Chevy Malibu. The outlet is usually protected by a larger fuse in the fuse box that protects multiple circuits. To find the correct fuse, you'll need to consult your owner's manual. The manual will show you the location of the fuse boxes (there's usually one under the hood and one inside the car, often under the dashboard) and a fuse diagram that indicates which fuse is responsible for the accessory power outlets. It might be labeled "Power Outlets," "Accessory," or something similar.