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Jerry Newton
Jerry Newton, Cadillac Technician
Category: Cadillac
Satisfied Customers: 4410
Experience:  ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
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How do i replace heater core on 97 caddy deville?

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how do i replace heater core on 97 caddy deville?

Remove or Disconnect

  1. Negative battery cable.
  2. Partially drain coolant.
  3. Glove box unit and right-side lower sound insulator.
  4. Programmer and electrical connectors.
  5. Heater core cover.
  6. Inlet and outlet heater hoses from heater core.
  7. Heater retaining screws.
  8. Heater core.

Install or Connect

  1. Heater core to heater case, securing with two screws.
  2. Inlet and outlet heater hoses to heater core.
  3. Heater core cover.
  4. Programmer and electrical connections. Refer to "Air Conditioning Programmer" in this section.
  5. Glove box unit and right-side lower sound insulator.
  6. Negative battery cable.
  7. Refill cooling system.

Pretty easy to replace, almost all of the work is done under the dash. Glove box comes out, RS lower closeout panel comes out. Just a few screws to remove the programmer and heater core cover.
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