Transmission Fluid Port
 

I am trying to find my transmission fluid fill port, but I can't find the cap shown in how-to videos. Has anyone seen a clamped rubber cap (as seen in the pictures) covering their fill port? Would that be my fill port? Thank you!
Sorry about the blurry pictures
https://cimg6.ibsrv.net/gimg/www.che...f31a657dd0.jpg
https://cimg1.ibsrv.net/gimg/www.che...fdb5c7738f.jpg

If that is the only "cap" looking thing on the top of the transmission, yes.
It is actually a vent cover not meant to seal.

No that rubber cap is on the thermostat housing, your fill port for the transmission will be to the right a bit and forward.

https://cimg6.ibsrv.net/gimg/www.che...b66aad4c6.jpeg
There’s the thermostat housing up on the left, see the threaded hole that’s the full port
https://cimg7.ibsrv.net/gimg/www.che...65255a82d.jpeg
The cap in place


https://cimg9.ibsrv.net/gimg/www.che...46a5d4c9c.jpeg
It’s hiding straight down from the tip of your finger