I found this plug beneath the dash (as shown in the picture) which I though had something to do with the high-idle feature (at least, this is what one service tech told me). Evidently, it does not according to some replies I've received on another thread. That being the case, which one of you guys (or gals) wants to be the first to identify this plug? My gratitude will be your reward.....

 

Just a guess, high idle clutch switch?

 

Probably just a plug for some accessory your truck did not come with. I'll look under my dash today and see if mine is connected to anything or if I even have one....

 

power adjustable pedal maybe??

 

looked up under mine a couple days ago and that plug is there and unused. i have the high idle enabled too.