Gibbs replaces Jon Hoke, who was fired along with defensive coordinator Richard Smith and defensive line coach Jethro Franklin after the Texans finished 8-8 for the second straight season.
The Texans ranked 22nd in total defense (336.6 yards per game) and were minus-10 in turnover margin after forcing only 22 takeaways, third-lowest in the AFC.
David Gibbs was a defensive back for Colorado from 1987-90 and served as a graduate assistant at Oklahoma from 1991-92. He worked as an assistant at Colorado (1993-94), Kansas (1995-96) and Minnesota (1997-00) before earning his first NFL job with the Broncos, where Houston coach Gary Kubiak was the offensive coordinator from 1995-05.
The Texans promoted senior defensive assistant Frank Bush to replace Smith. They have yet to name a replacement for Franklin.
Copyright 2009 by The Associated Press