Service bulletin # 00-08-42002 was issued in June of 2000 to address left headlamp door issues - the condition included headlamp doors that would not remain closed after the headlamps were turned off. Chevrolet's fix for the issue was the creation of bump stops that could be added to your C5 Corvette's factory headlight motor mounting bracket travel stop tabs. This fix was only for the LH side or driver's headlamp motor - not required for the passenger side. Sold individually. 2 required per headlight motor. 4 required per headlight assembly. 8 required per car.