1997 Chevrolet Cavalier Logo
Posted on May 16, 2010
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How to install a heater core

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ZJ Limited

ZJ Limited

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  • Chevrolet Master 17,989 Answers
  • Posted on May 16, 2010
ZJ Limited
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GM Cavalier/Sunfire 1995-2000 Repair Guide Heater Core - REMOVAL & INSTALLATION
(see Figure 1)

  1. Disable the SIR system, as outlined in this section.
  2. Disconnect the negative battery cable.
  3. Properly drain the cooling system.
  4. Raise and safely support the vehicle.
  5. Detach the heater hoses from the heater core.
  6. Carefully lower the vehicle.
  7. Remove the instrument panel.
  8. Remove the DERM with the attaching bracket.
  9. Detach the heater core cover.
  10. Unfasten the heater core mounting clamps, then remove the heater core.
how to install a heater core - 426dcbf.jpg

Fig. 1: Exploded view of the heater core and related components
To install:
  1. Position the heater core, then secure with the mounting clamps.
  2. Attach the heater core cover.
  3. Install the DERM with the attaching bracket.
  4. Install the instrument panel.
  5. Raise and safely support the vehicle.
  6. Connect the heater hoses to the core.
  7. Carefully lower the vehicle.
  8. Properly refill the engine cooling system and check for leaks.
  9. Enable the SIR system.
  10. Connect the negative battery cable, then start the engine and check for proper system operation and/or leaks.

Hope this help (remember rated this post) good luck.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Oct 21, 2008

SOURCE: how to install heater core

1999 Chevy S10

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emissionwiz

Marvin

  • 85242 Answers
  • Posted on Oct 17, 2008

SOURCE: 63 cadillac sedan deville heater core removal and installation instructions

I do think you have to pull he dash, for that you will need a manusl, try ebay for used factory manuals, I have had good luck getting them there for all my cars.

Anonymous

  • 1118 Answers
  • Posted on Jan 15, 2009

SOURCE: removal and instalation of new heater core

most all your major auto parts stores have web sights, you can get detailed instructions for disassembly and assembly with drawings.

Anonymous

  • 232 Answers
  • Posted on May 27, 2009

SOURCE: heater core removal/instalation

Underneath the dash not visible not reachable until you take the dash off. I've never heard of any vehicle that you don't have to remove ar take apart the dash. Taking it apart should not be difficult just tedious. Get a Haynes Repair Manual. You'll learn how to take it apart step by step, no guessing.

Anonymous

  • 9 Answers
  • Posted on Nov 17, 2009

SOURCE: how to replace heater core in 1983 dodge aries

go to u tube and type in that it will show you live instructionds

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Related Questions:

3helpful
4answers

Heater core leaking through floor vents.
Bad heater core you will need to replace it. About a 2 hour job, very easy to do:


Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement.
Remove the HVAC filter cover.
Remove the heater core/evaporator tube seals from the module.
Remove the heater core cover screws (1).
Remove the heater core retaining screws (1).
Remove the heater core retaining straps.
Remove the heater core.
Remove the rubber seals from the inlet/outlet pipes of the heater core.

Installation Procedure

Install rubber seals to the outlet/inlet pipes of the heater core.
Install the heater core to the module.
Install the heater core retaining straps.



Install the heater core retaining screws (1).
Install the heater core cover.



Install the heater core cover screws (1).



Install the heater core/evaporator tube seal from the module.
Install the HVAC filter cover.
Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement.
Read full answer
May 19, 2011 • Cadillac DeVille Cars & Trucks
3helpful
1answer

Heater core replacement. Haynes manual and car have major differences.
Heater core is removed from inside the cabin. About a two hour job. The hardest part is removing the hoses in the engine bay.
In the cabin, remove the beauty panel under the glovebox; remove the glovebox, and move the HVAC controller. The heater housing, or cover is held with two screws, and the core is held with one screw (clamp).
Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement.
Remove the HVAC filter cover.
Remove the heater core/evaporator tube seals from the module.
Remove the heater core cover screws (1).
Remove the heater core retaining screws (1).
Remove the heater core retaining straps.
Remove the heater core.
Remove the rubber seals from the inlet/outlet pipes of the heater core.

Installation Procedure

Install rubber seals to the outlet/inlet pipes of the heater core.
Install the heater core to the module.
Install the heater core retaining straps.



Install the heater core retaining screws (1).
Install the heater core cover.



Install the heater core cover screws (1).



Install the heater core/evaporator tube seal from the module.
Install the HVAC filter cover.
Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement.

This is the best that I can do for you, hope this works
Read full answer
May 19, 2011 • 1998 Cadillac DeVille
0helpful
1answer

How do I remove the heater core?
Heater Core Removal & Installation To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section. NOTE: If a heater core leak is suspected, pressure test the heater core to be certain of the problem before removing it from the vehicle.
  2. Remove the instrument panel.
  3. Remove the plenum chamber from the vehicle.
  4. Remove the screws and the heater core cover from the plenum chamber.
  5. Carefully cut the seal above the heater core inlet and outlet tubes and remove the heater core.
Heater core cover screws for-10-00-244.gif

To Install:
  1. Place the heater core in the plenum chamber.
  2. Install the cover on the heater core.
  3. Install the plenum in the vehicle.
  4. Install the instrument panel.
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Jan 08, 2011 • 2001 Ford Crown Victoria
0helpful
1answer

How do i replace a heater core in my 97 blazer
Heater Core Removal & Installation To Remove:
Heater core removal gm-10-00-651.gif

  1. Remove the heater/vent module.
  2. Remove the heater core access cover screws.
  3. Remove the heater core access cover.
  4. Remove the heater core from the heater/vent module
To Install:
  1. Install the heater core to the heater/vent module.
  2. Install the heater core access cover and screws to the heater/vent module.
  3. Install the heater/vent module assembly to the vehicle.
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Dec 19, 2010 • 1997 Chevrolet Blazer
0helpful
2answers

Broken heater coil
If you mean the heater core is leaking. Here is how to change it:

Heater Core Removal & Installation Heater core removal gm-10-00-589.gif

To Remove:
  1. Remove the HVAC assembly.
  2. Remove the heater core cover screws.
  3. Remove the heater core cover from the HVAC assembly.
  4. Remove the heater core gasket from the core.
  5. Remove the heater core from the HVAC module assembly.
To Install:
  1. Install the heater core to the HVAC module assembly.
  2. Install the heater core cowl gasket to the HVAC module assembly.
  3. Install the heater core cover and screws to the HVAC module assembly.
  4. Install the HVAC module assembly to the vehicle.
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Oct 18, 2010 • 2000 Chevrolet Silverado 1500
0helpful
1answer

How to replace a heater core
Heater Core Removal & Installation To Remove:
  1. Remove the HVAC housing.
  2. Turn the HVAC housing over.
  3. Remove the heater core case cover.
  4. Remove the heater core bracket and screw.
  5. Remove the heater core.
To Install:
  1. Install the heater core to the HVAC housing.
  2. Install the heater core bracket and screw.
  3. Install the heater core case cover.
  4. Install the HVAC housing.
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Oct 09, 2010 • 2001 Pontiac Grand Am SE
0helpful
1answer

Heater core replacement
Heater Core Removal & Installation To Remove:
Heater core removal gm-10-00-651.gif

  1. Remove the heater/vent module.
  2. Remove the heater core access cover screws.
  3. Remove the heater core access cover.
  4. Remove the heater core from the heater/vent module
To Install:
  1. Install the heater core to the heater/vent module.
  2. Install the heater core access cover and screws to the heater/vent module.
  3. Install the heater/vent module assembly to the vehicle.
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Oct 08, 2010 • 2003 Chevrolet Blazer
0helpful
1answer

Diagram on how to replace heater core in 99 expedition
Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.
  1. Drain engine coolant.
  2. Remove instrument panel.
  3. For 5.4L (4V), if quipped, remove junction splash shield.
  4. For 5.4L (4V), if quipped, disconnect starter relay cable. ford-03-00-3579.gif

  5. For 5.4L (4V), if quipped, remove junction block bracket.
  6. Clamp inlet and outlet heater hoses.
  7. Disconnect heater hose from heater core by gently pressing it toward heater core.
  8. Remove A/C plenum demister adapter.
  9. Disconnect vacuum line.
  10. Remove 13 plenum chamber top screws.
  11. Remove blend door assembly from case.
  12. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.
ford-10-00-3098.gif

  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
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Aug 21, 2010 • Ford Expedition Cars & Trucks
6helpful
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Smoke coming from a/c vents on ford expedition with sweet smell
The problem is the heater core leaking behind the dashboard. Heater Core Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.
  1. Drain engine coolant.
  2. Remove instrument panel.
  3. For 5.4L (4V), if quipped, remove junction splash shield.
  4. For 5.4L (4V), if quipped, disconnect starter relay cable. ford-03-00-3579.gif

  5. For 5.4L (4V), if quipped, remove junction block bracket.
  6. Clamp inlet and outlet heater hoses.
  7. Disconnect heater hose from heater core by gently pressing it toward heater core.
  8. Remove A/C plenum demister adapter.
  9. Disconnect vacuum line.
  10. Remove 13 plenum chamber top screws.
  11. Remove blend door assembly from case.
  12. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.
ford-10-00-3098.gif

  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
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Read full answer
Aug 17, 2010 • 1999 Ford Expedition
4helpful
2answers

Need to remove heater core from 2000 Daewoo Nubira
  1. Disconnect the negative battery cable.
  2. Remove the instrument panel from the vehicle.
  3. Remove the heater/air distributor case from the vehicle.
  4. Disconnect the vacuum actuators from the vent/floor door and the defroster door.
  5. Remove the vacuum actuators from the heater/air distributor case.
  6. Remove the screws that secure the heater core cover to the heater/air distributor case assembly.
  7. Slowly separate the lower heater core cover from the rest of the assembly
  1. Remove the screw and the bracket clamp that secure the heater core lines to the case.
  2. Remove the spring clamp that secures the heater core body to the case.
  3. Remove the heater core from the case.
  1. Install the heater core into the case.
  2. Secure the heater core lines to the case with the retaining bracket clamp and the screw. Tighten the heater core retaining bracket screw .
  3. Install the heater core body with the retaining spring clamp.
  1. Install the heater core cover.
  2. Install and tighten the screws that secure the heater core cover to the heater/air distributor case assembly. Tighten the heater core cover screws
  3. Install the actuators for the vent/floor and the defroster doors.
  4. Install the heater/air distributor case.
  5. Install the instrument panel.
  6. Fill the cooling system
  7. Connect the negative battery cable.
Read full answer
Jun 18, 2009 • 2000 Daewoo Nubira
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