Jeremy, That's a manufacturer specific code, can't find it on any of my lists, so I'll take your definition as correct.
Problem is, I do not know what a "trans throttle actuator valve(tv cable connected to valve at trans?)" is? From the dealer price quote, sounds like they could be describing the APPS? But from your description of the issue, sounds like the front band is out of adjustment. A bad governor pressure solenoid and sensor could be causing the same symptom, but the dealer price is too high for those parts also.
I would begin by adjusting the front band, if it is within spec to be adjusted...
What year is your truck? What transmission do you have? You need to fill out your signature in the control panel so we are better able to assist. I may just be tired, but need to figure out what part the P1754 code actually pertains to, any more info you can supply will help.