It's called an idle air control valve in the book. It's located at the back of the throttle body (nearest side to the firewall). It looks like a brass 90 degree coupling for plumbing(to give a description) It has a wire connection coming out of the back which I believe the wiring faces the driver side of the truck. It has 2 torx bolts with t20 or t 25 heads can't remember exactly which one. You might need some kind of extention that isn't to long but not to short the fuel rail connecting lines were sort of a hinderence when I replaced mines.

Best of luck.

 

I hate you...lol I get max 17 highway in fall-ish cool weather on mid grade fuel.

 

I'm getting about 14mpg but like I have posted elsewhere, I think some sensors are in need of replacement esp. my coolant one.

I am sure that I can squeeze out a couple more once I have cleaned or replaced them.