OEM 2004 Cadillac DeVille Heater Core

2004 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace the Heater Core on 2004 Cadillac DeVille?

  A: Draining the cooling system should be the first step when replacing a Heater Core. The heater hose clamp tool (J 37097-A) helps users disconnect heater hoses from the Heater Core before removal of the auxiliary Blower Motor assembly. Proceed to remove the Heater Core cover screws followed by Heater Core retaining screws and installer the Heater Core retaining straps. The Heater Core and Heater Core case seals require removal. Installation starts by placing the new Heater Core correctly and setting it into place using retaining straps for security. The new Heater Core case seals should be installed before the technician tightens the Heater Core retaining screws to 1.4 n.m (13 lb in) while setting the Heater Core cover screws to the same torque value. Fitting in the auxiliary Blower Motor assembly requires the usage of the heater hose clamp tool (J 37097-A) to clamp the heater hoses onto the Heater Core. Finally, fill the cooling system.