Answer
Yes, Hans-Joachim Stuck raced in Le Mans 24 Hours. He made his debut in the 1972 race, driving a Porsche 911S with Herbert Müller. The pair finished in second place. Stuck went on to race in the event a total of 11 times, with his best finish being a victory in the 1977 race, driving a Porsche 935 with Jacky Ickx.