OEM Cadillac Escalade EXT Heater Core

Cadillac Escalade EXT Heater Core Parts and Q&A

• Heater Core
  89018297
  Q: How to replace the Heater Core (Visteon) on Cadillac Escalade EXT?

  A:

  The repair of the Visteon heater core begins by removing the HVAC module assembly followed by removing screws from the heater core cover until the assembly becomes loose from the module. The procedure requires removal of the heater core cowl gasket from the heater core so you can extract the heater core out from the HVAC module assembly . The heater core installation requires insertion into the HVAC module assembly first and then addition of the heater core cowl gasket followed by reconnection of the heater core cover to the HVAC module assembly . The repair requires using appropriate fasteners which need to be installed in their exact positions since alternative fasteners must be of the proper part number for intended usage. When the service procedure requires new fasteners or thread locking materials or sealants, it will specify their requirements. Paints alongside lubricants and corrosion inhibitors must be avoided on both fasteners and joint surfaces since these materials can result in damage to the fastener through changes in torque and clamping force. The correct tightening sequence and specifications should be followed to stop damage from occurring to parts and systems. Install the screws onto the heater core cover while tightening them to 2 Nm (18 lb in). Reinstall the HVAC module assembly afterward.