Alain Menu will switch to the Porsche Supercup this year after failing to land a drive in the World Touring Car Championship.
The 49-year-old Swiss has amassed 23 WTCC victories since joining the series with Chevrolet in 2005 and last year finished second in the overall standings.
Chevrolet withdrew from the championship as a works entrant at the end of 2012, with the RML squad, which ran the manufacturer's program this week confirming a privateer program with Yvan Muller and Tom Chilton.
Menu will drive for FACH Auto Tech, which is stepping up to the Supercup after several years in the German Carrera Cup. He will be partnered by Supercup race winner Christian Engelhart.
Team owner Alexander Fach said: "When I was told to ask Alain Menu to drive for us, I thought it was a joke. I thought a DTM driver and a guy who has been runner-up in the WTCC would be too much for us. But then we met each other and we got along very well right away. Now we both believe in our aims."
Menu has experience of Porsche racing, having taken a double win at Oulton Park in 2004 as a guest driver in the British Carrera Cup. He is also a race winner in FIA GTs in Ferrari machinery and has contested the Le Mans 24 Hours in a Prodrive-run 550 Maranello.