I just got done installing my high idle switch. I went to try it out, but nothing happened, I waited for about 10 minutes on each setting as I know it's not an instant thing. I don't think it is the switch as I have a scan gauge and it shows the IAT and ECT values change with each twist of the knob and the TPS voltage was also reading 0. I took the truck in 2 weeks ago to have the TSB for the high idle unlocked, they said to bring it back if it didn't work, but is there anything else I should check before I deal with the dealership again?