Brooks retired after the 1982 season and from 1983-1990 was assistant defensive line coach for the Rams. He spent eight years with the team, where he was paired with defensive coordinator Fritz Shurmur. He served as the defensive line coach for the Green Bay Packers from 1994–1998, the Seattle Seahawks from 1999-2002 both under Mike Holmgren, Then to the Chicago Bears in 2003, and was the Detroit Lions defensive line coach from 2004-05. He spent the 2006 season as the defensive line coach for the Arizona Cardinals marking his 21st season as an NFL assistant coach and 33rd season in the NFL as either a player or coach.