PSA's supervisory board appointed Opel CEO and turnaround specialist Michael Lohscheller as a member of the automaker's managing board effective from 1 September 2019 until 2 April 2021.
He replaces Jean-Christophe Quemard, head of PSA's Middle East & Africa unit who remains a member of the global executive committee.
The supervisory board said Lohscheller's new appointment reflected "the importance of Opel Vauxhall's integration into Groupe PSA".
"He will bring to the managing board his international experience gained from several OEMs as well as his expertise in finance, trade and logistics.
Supervisory board chairman Louis Gallois said the board was continuing 'internationalisation' of senior management.
"It acknowledges the role taken by Michael Lohscheller in the turnaround of Opel Vauxhall."
Lohscheller has been Opel CEO since 2017 and previously was responsible for the automaker's finances.
Before Opel, which he joined in September 2012, Lohscheller was CFO at Volkswagen Group of America where he led a successful turnaround.
In 20 years with different automobile companies, his responsibilities included finance, marketing and sales, purchasing and logistics.