Hi all. I have a 6.0 PSD, 01/03 engine build, SRW CC auto FX4 Lariat, original owner. I recently began getting an intermittent CEL and my tuner showing P2140, P2138, P2127 codes at the same time. I have read everything I can find about the throttle pedal position etc. I crawled under there to look at everything and for the life of me I can't get the wiring harness connector to release where it goes into the upper rear left of the TPP assembly. Tried prying it up without success. There is a RED sliding retainer of some sort that goes up and down. I found it in the UP position. I had my pedal assembly replaced by Ford years ago when the adjustable pedals stopped working. I have some contact cleaner and I was going to spray it good just for kicks while I checked for any obvious chafing etc.. Was considering just ordering a new assembly since my electrical problem solving skills are minimal. Any ideas would be appreciated.