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Question posted by RLTC06 on December 8th, 2012

Heater Core Replacement Instruction

Can I get instruction on,how to change a heater core,in a 1997 Cadillac Deville?

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Answer #1: Posted by bengirlxD on December 8th, 2012 10:23 AM

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bengirlxD

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Remove or Disconnect

Negative battery cable.
Partially drain coolant.
Glove box unit and right-side lower sound insulator.
Programmer and electrical connectors.
Heater core cover.
Inlet and outlet heater hoses from heater core.
Heater retaining screws.
Heater core.

Install or Connect

Heater core to heater case, securing with two screws.
Inlet and outlet heater hoses to heater core.
Heater core cover.
Programmer and electrical connections. Refer to "Air Conditioning Programmer" in this section.
Glove box unit and right-side lower sound insulator.
Negative battery cable.
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.

Feel free to resubmit the question if you didn't find it useful.

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