It has been amply demonstrated that thin films of organofunctional silanes deposited by dipping or spraying on metals such as aluminum, can provide protection against various forms of corrosion, including uniform corrosion and pitting. In this paper it will be shown that denser films with higher pore resistance and hence better corrosion protection performance can be obtained if the silane is deposited by electrodeposition. The resulting films can protect aluminum alloys against uniform and pitting corrosion in a salt solution for 1000 hours or longer. By applying pulsed electrodeposition, the performance is much better, as in-situ cleaning of the substrate can be achieved and the silane film can be densified by accelerated crosslinking at the interface. In such a process the silane seems to react with the metal oxide in a different way and, in the case of aluminum, aluminate ions are incorporated into the film.