Accelerator pedal not working

Just to be clear when you push the pedal does the engine rev up and you have no acceleration, or you have no pedal response? So, when you press the throttle, do the RPMs not go up at all?

There is a chance that you have a torque converter issue so if the engine sounds and feels like it is bogged down then the converter is most likely failed and not moving the fluid through to get the transmission to move.

If the RPMs do nothing, then we need to do two things. First is check for codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

We should have codes pointing to the pedal or throttle position.

I am attaching the wiring diagram info on throttle which we are going to have to check to find out if the PCM is getting the throttle input.

However, if you can get a video of what this is doing then that will help with figuring this out.