She had served as solo anchor of the weekday editions of KCBS-TV's CBS 2 News at 6 pm from April 2010 until she left the station.
This promotion made her the first female Hispanic lead anchor at an English language television station in Los Angeles.
Diaz was also one of the original hosts of the groundbreaking Vista L.A. on KABC-TV, one of the first public affairs program in Southern California to serve the English-speaking Latino audience in the region.
In June 2005, she landed the first in-depth television interview with incoming Los Angeles Mayor Antonio Villaraigosa.
In 2003, Diaz received the L.A. Press Club's highest honor, the Joseph M. Quinn Award for journalistic excellence and distinction.
Diaz sits on the advisory board of trustees of The Joyful Child Foundation,[7] started by children's advocate Erin Runnion.
The California Conservatory of the Arts sponsored a group called the Kids Next Door, who recorded a fundraising Christmas album at the end of 2004, with funds going to the Joyful Child Foundation.