The #80 Flying Lizard Porsche was forced to retire after Patrick Long crashed just after midnight.
Long encountered gravel on track in the first chicane, which caused him to spin. He then hit the tyre tyre wall.
The car sustained heavy damage and Long was unable to drive it back to the pits, meaning it had to be retired. He had been sharing the car with Jorg Bergmeister and Marco Holzer.
The #79 GTE Am challenger had led its class during the early hours, but later suffered an accident of its own that necessitated a lengthy time in the garage. Driven by Spencer Pumpelly, Seth Neiman and Patrick Pilet, it is now tenth in class.