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How to replace heater core 91 Oldscierra - 1991 Oldsmobile Cutlass Ciera

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 1168 Answers

SOURCE: how to replace heater core

Hello Davisracecar.

Here is the repair manual procedure.

  1. Disconnect battery ground cable.
  2. Drain cooling system.
  3. Raise and support vehicle.
  4. Disconnect heater hoses from heater core assembly.
  5. Remove evaporator case drain tube.
  6. Lower vehicle.
  7. Remove instrument panel sound insulator.
  8. Remove heater duct and hose assembly and position aside.
  9. Remove 2 heater core cover attaching screws, then the covers.
  10. Remove heater core from vehicle.
  11. Reverse procedure to install.
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This is the labor time listed in the manual.
Replace With AC B 0.0 2.7 Without AC B 0.0 2.4

If you need further assistance with this please ask me here.
Thank you for using FixYa.

KL

Posted on Feb 05, 2011

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elix0411
  • 3530 Answers

SOURCE: how to replace heater core

Welcome to Fixya

Heater core is located behind the center unit (near the stereo, ac, etc.) hovering above the floorboard between the passenger and driver side.
Take off the black heat shield. Open your hood.
At the back of the engine cavity (the engine side of the heater core). You will see two identical pipes/stems coming out.
Remove any hoses, etc. from the two pipes/stems.
Now, it should just be a matter of wriggling the core loose from the inside.
If you can't pull it from the inside, try pushing from under the hood.

Thank you for using Fixya!

Posted on Feb 08, 2011

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