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EricFromCT, ASE Certified Technician
Category: Buick
Satisfied Customers: 3857
Experience:  ASE Master certified L1, L2, Diesel Certified 16 years experience
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How to remove heater core from 1989 buick reatta?

Customer Question

how to remove heater core from 1989 buick reatta?
Submitted: 1 year ago.
Category: Buick
Expert:  EricFromCT replied 1 year ago.

Hi. Follow this procedure please:

  1. Disconnect negative battery cable, then drain the cooling system.
  2. Remove hoses from heater core.
  3. Remove three screws and two wing nuts, the righthand sound insulator and the courtesy lamp.
  4. Remove ten screws retaining glove box, then the programmer electrical connector.
  5. Remove one nut and programmer vacuum connector, then the three programmer retaining screws and programmer.
  6. Disconnect ECM electrical connectors, ECM, then the ECM bracket.
  7. Remove the BCM electrical connectors, BCM, then the BCM bracket.
  8. Remove the two heater core cover screws, then cover the carpet to protect against spills.
  9. Remove heater core.
  10. Reverse procedure to install.
Expert:  EricFromCT replied 1 year ago.

Let me know if you have more questions please. Thanks.

Expert:  EricFromCT replied 1 year ago.

Thank you for viewing my response. Please let me know if you have further questions and rate my service and have a great day.