She entered the judiciary in June 1986, when she became rapporteur of the Court of Appeals of Santiago [es], a position she held until 1994.

In that role, she participated in the process of lifting the parliamentary immunity of Augusto Pinochet, and was responsible for drafting the court's ruling.

[3] Chevesich became president of the Court of Santiago for the judicial year 2013,[4] succeeding Minister Iván Villarroel.

At the end of May 2013, President Sebastián Piñera nominated her to join the Supreme Court,[5] a decision that was ratified by the Senate on 3 July.

While studying at the university, Gloria Ana Chevesich met Andrés de la Maza Camus, with whom she had a relationship for two years, until they married in 1979.