GM-recommended replacement part for your GM Vehicle’s original factory component GM Heater Control Valve - Guaranteed Genuine Hvac Replacement ACDelco 15-50574 GM Original Equipment Heater Water Flow Control ACDelco 15-50574 Water Valve HVAC Heater Water Flow Control Valve 15-50574 fits 97-01 Cadillac Catera ; Manufacturer Warranty. 1 Year ; Quantity. 1 ; Item description from the seller · SAMEDAY... This original equipment Valve will provide the same performance, durability, and service life as your factory original equipment. Shop ACDelco 15-50574 GM Original Equipment Heater Water Flow Control Valve online at a best price in Nigeria. B000EQQNOM ACDelco GM Original Equipment HVAC Heater Water Flow Control Valve is a GM-recommended replacement component for one or more of the following vehicle systems: hvac.