Interlibrary Loan (ILL) requests reveal a lot about our collections, from development needs to access issues. This session focuses on how ILL and Technical Services personnel at Georgia Southern University are using ILL request information to troubleshoot and improve electronic resource access across our collections. We will explore the kinds of access issues ILL lending and borrowing requests reveal, discuss strategies for issue reporting and feedback, and consider the benefits of leveraging ILL requests to identify, mediate, and resolve access issues, sometimes before they ever crop up at the reference desk. Additionally, we look forward to hearing about what strategies other libraries are using to leverage ILL data to improve access troubleshooting.