OEM 2003 Cadillac DeVille Heater Core

2003 Cadillac DeVille Heater Core Parts and Q&A

• Q: How to replace the Heater Core on 2003 Cadillac DeVille?

  A: Draining the cooling system must be done before Heater Core replacement. Anglers can remove heater hoses from the Heater Core using the heater hose clamp tool (J 37097-A). Begin by taking out the auxiliary Blower Motor assembly and proceeding to the Heater Core cover screws plus the Heater Core retaining screws . After that, extract the Heater Core retaining straps along with the Heater Core itself and Heater Core case seals. You must remove first both Heater Core retaining straps and the Heater Core assembly, Heater Core case seals. The installation process requires placement of the new Heater Core then installation of the Heater Core retaining straps along with new Heater Core case seals. Put the retaining screws of the Heater Core into place before securing them with 1.4 n.m (13 lb in) torque. Fasten the Heater Core cover screws while tightening them to 1.4 n.m (13 lb in). The auxiliary Blower Motor assembly can be restored before connecting the heater hoses to the Heater Core through the use of the j 37097-a heater hose clamp tool. Finally, fill the cooling system.