CC is referring to a vote on May 6, 1999, not the vote on November 4, 1999. It was not known as GLBA in May.
It is confusing and I could be wrong but in all the great oratory on the subject, I hear November 4, 1999 is when the final version of the bill passed.
Wiki: Nov 4, 1999: After passing both the Senate and House the bill was moved to a conference committee to work out the differences between the Senate and House versions. Democrats agreed to support the bill after Republicans agreed to strengthen provisions of the Community Reinvestment Act and address certain privacy concerns. The final bill resolving the differences was passed in the Senate 90-8-1 and in the House: 362-57-15. This 'veto proof legislation' was signed into law by President Bill Clinton on November 12, 1999
Washington Post, October 13, 1999:
"House and Senate Republicans yesterday unveiled a newly revised version of a bill to revamp banking law, but the White House said the proposed legislation inadequately protected consumers, didn't resolve other issues and would still result in a presidential veto. 'The administration is disappointed,' Treasury Secretary Lawrence H. Summers said of the bill and of the Republicans' decision to work on it behind closed doors without the help of Democrats."
Democrats only acceded to the newly veto-proof bill after Republicans agreed to strengthen provisions of the Community Reinvestment Act and correct privacy concerns the original version failed to address.