Okay guys, I've scanned for codes on my truck today because my truck would sometimes get a high idle when i would stop. I got 4 codes, the codes being DTC 37(Torque converter clutch solenoid CKT or park/neutral switch failure), 35(Rad Fan control relay circuit, 41(Generator field not switching properly), and 15(No vehicle speed sensor signal). None of these codes seem like they have anything to do with my idling problem, which I'm pretty sure is my TPS. Ive been reading that number 37 has something to do with the overdrive which I do have and I believe 15 is dealing with my speedometer sender on the transfer case. Help would be much appreciated, thanks.