OER reproduction of the original heater blower motor resistor designed for use with various GM non-air conditioned models. Each resistor is an exact reproduction of the original GM component designed to fit and function same as the original AC Delco resistor. The blower motor resistor is responsible for controlling the speed of the fan. Because the speed of the fan is a setting that is frequently adjusted by the driver of the vehicle, these resistors are often under continuous stress or strain, which can cause the resistor to eventually fail. A common symptom of a bad resistor is a blower motor that is stuck on one speed or a blower motor that does not work on certain settings. Another symptom of a bad resistor is no power at all to the blower motor resulting in no air from the vehicle's vents. Applications 1960-1964 Corvair 1962-1968 Corvette 1962-1968 Impala 1962-1968 Bel Air 1962-1968 Biscayne 1966-1968 Caprice 1962-1968 Chevy II Nova 1965-1966 Chevelle 1965-1966 El Camino 1967-1968 Camaro 1947-1968 Pickup Trucks 1960-1968 Suburban 1947-1968 Pickup Trucks 1960-1968 Suburban 1966-1966 Starfire 1966-1966 Dynamic 88 1966-1967 Jetstar 88 1966-1968 Delta 88 1967-1968 Delmont 88 1966-1968 Ninety-Eight 1966-1968 Toronado