DeLoach, a 28-year college coaching veteran, was on the North Texas staff from 1998-2002 and spent the last three of those seasons as defensive coordinator before going to UCLA. Last season he coached safeties and special teams for the Bruins under Karl Dorrell, who was fired last month.
The 53-year-old DeLoach replaces Ron Mendoza, who was fired after a 2-10 season in which North Texas gave up more than 70 points in two games and 66 in another. Mendoza came with Todd Dodge from Southlake Carroll High School last year, when Dodge made the rare jump from high schools to head coach in the highest college division.
With DeLoach in 2002, the Mean Green finished third nationally in scoring defense (14.8 points per game) and ninth in total defense (290.6 yards). Last year North Texas had the nation's worst scoring defense (45.1 points) and was near the bottom in total defense and rushing defense.