This is a good, used C3 Electronic Spark Control Module which can be installed on any of the following Corvette models:
Body & Trim
Base, Collector’s Edition
NOTE: This module is located behind the driver seat and is mounted on the back of the ECM plate.
NOTE: This module corrects the diagnostic trouble code 43, Fuel Injection Electronic Spark Control (ESC).
GM Part Numbers: 16024701, 16016861, 16017601