A light module is particularly suited for use in a lighting device for a motor vehicle. The light module has at least one extensive light body and at least one illuminant, the light rays of which are able to exit, or exit, to the outer side via a light-exit area that is surrounded by side areas of the light body. At least one part of the side areas and a back area lying opposite the light-exit area are covered by a reflective or diffusely back-scattering cover. The cover is formed by a frame-like component with a back wall. A side wall of the frame-like component has an opening. The light body is able to be laterally slid into, or is laterally slid into, the frame-like component through the opening. The at least one illuminant is disposed on the side wall with the opening of the frame-like component.