Eaton Corporation (Eaton) is recalling certain Eaton and Fuller hybrid automated transmissions, part numbers EH-6E606B-CD; EH-6E606B-U; EH-6E606B-UP; EH-6E706B-UPG;EH-6E606B-T; EH-6E606B-CDG; EH-6E606B-P; EH-6E606B-CDR; EH-6E606B-PBD; EH-6E706B-PSB; EH-6E606B-PBD, that contain Eaton?s hybrid control module software versions 5500682 or 5500683 and were manufactured August 30, 2010, through December 16, 2013 for use in medium-duty commercial vehicles. The software controlling the affected transmissions may improperly raise the vehicle’s engine speed during downshifts without the driver?s input.