You've probably already seen this guide for the GTS:
https://celicahobby.com/forums/ubbt...control-valve-how-to-properly-clean.htmlIn the following two diagrams, you can visually see that the GT/1ZZ-FE (d.1) and GTS/2ZZ-GE (d.2) have a different throttle body layout, and a different looking idle air control valve.
Click through the links on the image, and flip through the pages of the technical repair manual for the "IAC Valve Inspection" section (SFI, page SF-40)
diagram 1:
diagram 2: