OEM 2002 Cadillac DeVille Heater Core

2002 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace the Heater Core on 2002 Cadillac DeVille?

  A: The first task to replace the Heater Core requires draining the cooling system fluid. The heater hose clamp tool (J 37097-A) should be used to disconnect heater hoses from the Heater Core. The first step involves removing the auxiliary Blower Motor assembly after which the Heater Core cover screws and Heater Core retaining screws require removal. Remove first the Heater Core retaining straps together with the Heater Core itself while also taking away the Heater Core case seals. The first step for installation involves placing the new Heater Core in position and then installing the Heater Core retaining straps followed by new Heater Core case seals. Fasten the retaining screws of the Heater Core while torquing them to reach 1.4 n.m (13 lb in). Secure the Heater Core cover screws with the same torque value. The installation process includes fitting the auxiliary Blower Motor assembly followed by attaching the heater hoses to the Heater Core using the heater hose clamp tool (J 37097-A). Finally, fill the cooling system.