Q: How to Remove and Replace the Heater Core with Air Conditioning in a Buick Skylark, Oldsmobile Omega and Pontiac Phoenix?
A: The coolant should be drained into a suitable container by opening the drain valve on the lower right side of the radiator. After that, disconnect the negative battery cable. In addition to this, heater inlet and outlet hoses from the heater core should be removed in the engine compartment. Provided that any, remove noise absorbing panel under dash. Also, remove heater outlet duct and heater core cover. Next step, remove heater core itself. If there is need to repair a heater core take it to professional radiator shop or dealer to get it fixed for you. All that is required is installing everything back as before and refilling the radiator with coolant upto a certain level and connecting the battery cable.
Q: How to Remove and Replace a Heater Core without Air Conditioning in a Buick Skylark, Oldsmobile Omega and Pontiac Phoenix?
A: Open the drain valve on the lower right side of the radiator and drain the coolant into a suitable container. Disconnect the negative battery cable. Remove the heater inlet and outlet hoses. Remove the radio noise suppression strap from the heater core cover. Remove the heater core cover mounting screws, and remove the cover from within the engine compartment. Remove the heater core. If the heater core is in need of repair, have a professional radiator shop or dealer perform the work. Installation is the reverse of the removal procedure. Be sure to fill the radiator with coolant to the proper level and connect the battery cable.