New Standard sensor.  This is the IAT (Intake Air Temperature) sensor.  This mounts in the rubber/plastic duct just before the throttle body of the motor which translates the air temperature to the ECM/PCM.  Fits the following:

92-96 LT1/LT4 Corvette
97-00 LS1 Corvette
93-97 LT1 Camaro
93-97 LT1 Firebird/Trans Am
98-02 LS1 Camaro
98-02 LS1 Firebird/Trans Am
93-02 V6 Camaro
93-02 V6 Firebird