If you are referring to the vehicle speed sensors on the transmission, it's mounted on the transmission below the exhaust. See pic 1 below. I circled it for you.
As far as replacement, the remaining pics below are the directions specific to your vehicle for a replacement of the part.
Just a note, before installing the new sensor, make sure to clean the area where it is to be mounted and lubricate the new o-ring with ATF before installing it. That helps prevent damage to the o-ring and prevent leakage.
I hope this helps. Let me know if you have other questions.
See pics below.
Images (Click to enlarge)
Thursday, June 24th, 2021 AT 11:03 PM