Throttle Position Sensor & Idle Air Control Valve Set TPS IAC For LS Chevy GM

99 Silverado 1500 (submodel: Base, LS, LT). 99 Silverado 2500 (submodel: Base, LS, LT). Throttle Position Sensor 1. For Cadillac. For Pontiac. - OE#:15023180, th149, ac234, th385, 17113598, cv10011, 17106809, 17113578, 17113625, 17123852, 17123855, 17125483.