Re: Off topic question--Chevy truck
theres a idle air control(iac) valve on the rear passenger side of the throttle body. either the whole thing screws out or theres 2 torx screws holding it in, i would either pull it out and try cleaning it or just replace it and clean its bore, from the top you can look down and see its tip in the bore, rev the engine and it should move. i'd start there.
68 Ford Country Sedan Wagon-390 FE, C6, 9 Inch
87 Chevy Caprice Classic Wagon-307, 2004R, 10 Bolt, what can i say, i grew up with that car