Question about 1965 Chevrolet Corvette

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How do I remove the heater core in a 1965

How do I remove and replace the heater core in a 1965 Corvette?

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  • Chevrolet Master
  • 2,984 Answers

Here ya go! Fairly simple task!

Removal and Installation

  1. Drain the radiator, remove the radiator expansion-tank retaining straps, and move it from the work area.
  2. Remove the battery.
  3. Remove the water hoses from the heater assembly.
  4. Remove the seven stud nuts attaching the blower and an inlet assembly to the firewall. Remove the assembly.
  5. Remove the glove compartment and panels on both sides of the console.
  6. As a precaution, place a plastic sheet or other waterproof covering over the passenger-side carpet.
  7. Remove the two control cables from the instrument panel.
  8. Disconnect the wire leads from the lower switch and the resistor.
  9. Carefully remove the heater assembly from under the dashboard.
  10. Remove the four core cover retaining screws.
  11. Loosen the four screws holding the core retaining yokes and the core to the retainer cover.
  12. Remove the rear cover and core.
  13. To install, reverse this procedure.

Posted on May 28, 2010

  • Jesse Coelho May 21, 2013

    On the water pump and and or manifold ., to where do the hoses go ? On the heater core you have the larger hose ., lower is the smaller ., do both go to water pump or does one of them go to the manifold



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If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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