Is it a 4L60E or a 4L80E.I did search for 1 hour with no help.

 

from wikipedia "4L80-Es have been optioned only in Chevrolet/GMC pickups, vans, and commercial vehicles, and the Hummer H1." it was never used on cars aka your t/a. from 94 to 02, all V8 f-bodies has the 4l60-e.

 

Really? Was your computer connected to the internet?

Go to google.com
Type in "Pontiac Firebird"
Click on Wikipedia link
Click on the link for the Fourth Generation subsection
Scan the right side of the page where it gives a breakdown of information and you'll see the transmission types listed.

Your 1999 has a 4L60E.

 

Maybe in Canada the interweb works differently? . JUST KIDDING!