98-02 Camaro/Firebird Replacement Throttle Position Sensors, Reproduction Reproduction replacement throttle position sensors electronically inform the PCM of the throttle valve angle. The powertrain control module (PCM) uses this input to regulate your fuel and ignition systems. MSRP: Was: Price: Now: $39.95 Quick view Add to Cart SKU: 977030 (Replaces 17123852)