Here is 1 new HVAC A/C & heater blower motor fan relay to fit many Chevrolet vehicles 1967-2001.
Relay has 5 contacts and a mounting tab. 
Relay has many uses; such as: convertible top, fast idle control solenoid, A/C compressor cut out, cornering lights, blower motor, power antenna, throttle control and windshield wiper washer. 
Fits: Chevrolet; Bel Air 1967-1981, Biscayne 1967-1972, Caprice 1967-1996, Impala 1967-1985, Kingswood 1969-1972