Question about 2005 Chevrolet Cobalt

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How to install a heater core for 2005 chevy cobalt

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  • rickringgold Nov 14, 2009

    how to install a heater core for a 2005 chevy cobalt?

  • rickringgold Nov 14, 2009

    i want detailed instructions on how to install a heater core for a 2005 chevy cobalt

  • rickringgold Nov 14, 2009

    can someone email me directions and illustrated pictures on how to install a heater core for a 2005 chevy cobalt? do you know where i can get theses directions and pictures at to print off? my email address rickringgold@yahoo.com thank you...

  • rickringgold Nov 15, 2009

    i need illustrated pictures to show how to install a heater core for a 2005 chevy cobalt.where can i find illustrated pictures at to fix my problem?

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5 Answers

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  • Master
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  1. Before servicing the vehicle, refer to the precautions section.
  2. Disable the SIR system by performing the following procedure:
    1. Point the wheel in the straight-ahead position.
    2. Turn the ignition switch to the LOCK position.
    3. Remove the AIR BAG fuse from the fuse block.
    4. At the base of the steering column, remove the left sound insulator.
    5. At the base of the steering column, disconnect the Connector Position Assurance (CPA), the yellow 2-way electrical connectors and the passenger-s side module electrical connector.

  3. Disconnect the negative battery cable.
  4. Drain the cooling system into a clean container for reuse.
  5. Disconnect the heater hoses from the heater core.
  6. If equipped, remove the Diagnostic Energy Reserve Module (DERM) with attaching brackets.
  7. Remove the steering wheel by removing or disconnecting the following:
  8. SIR module-to-steering wheel screws SIR module and disconnect the electrical connector


    Steering wheel-to-steering column nut Steering wheel from the steering column
    Remove the instrument panel by removing or disconnecting the following:Defroster grille Instrument panel end caps from both sides Instrument panel trim pad, (Cavalier models only) Accessory trim plate, (Sunfire models only) Instrument panel trim plate Heater/air conditioning control assembly Radio Air ventilation ducts from the heater housing Instrument panel light electrical connector Tie bar screws Instrument panel from the tie bar Heater core outlet screws and the outlet Heater core cover-to-heater case screws and the cover.

Posted on Nov 14, 2009

  • 3 more comments 
  • Nate Stansfield
    Nate Stansfield Nov 14, 2009



    1. Remove the instrument panel by removing or disconnecting the following:



      NOTE

      The heater core mounting screw is located in the recess in the center of the heater core cover.










      Defroster grille


      Instrument panel end caps from both sides


      Instrument panel trim pad, (Cavalier models only)


      Accessory trim plate, (Sunfire models only)


      Instrument panel trim plate


      Heater/air conditioning control assembly


      Radio


      Air ventilation ducts from the heater housing


      Instrument panel light electrical connector


      Tie bar screws


      Instrument panel from the tie bar


      Heater core outlet screws and the outlet


      Heater core cover-to-heater case screws and the cover.










      Heater core clamp from the heater assembly


      Heater core from the heater assembly








      http://repairguide.autozone.com/znetrgs/...">


      Fig. Exploded view of the heater/evaporator housing assembly-2002 Cavalier and Sunfire











    To install:





    1. Install or connect the following:






      Heater core to the heater assembly


      Heater core clamp to the heater assembly and torque the clamp screws to 9 inch lbs. (1 Nm)


      Heater core cover and the cover-to-heater case screw and torque the screws to 9 inch lbs. (1 Nm)


      Heater core outlet and torque the screws to 9 inch lbs. (1 Nm)


      Diagnostic Energy Reserve Module (DERM) with attaching bracket, if equipped






    2. Install the instrument panel by installing or connecting the following:






      Instrument panel to the tie bar


      Tie bar screws


      Instrument panel light electrical connector


      Air ventilation ducts to the heater housing


      Radio


      Heater/air conditioning control assembly


      Instrument panel trim plate


      Instrument panel trim pad, (Cavalier models only)


      Accessory trim plate, (Sunfire models only)


      Instrument panel end caps on both sides


      Defroster grill


      Heater hoses to the heater core




  • Nate Stansfield
    Nate Stansfield Nov 14, 2009

    go to autozone.com and register for full free online repair manual.
    Then login, choose year, make, model, view repair guide.

    You can now get step-by-step directions with diagrams showing how to remove and replace your heater core.


  • Nate Stansfield
    Nate Stansfield Nov 15, 2009

    If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.

    When a heater core leaks, a new heater core is installed or the old one repaired.


    Heater Housing



    • The heater housing is usually under the dash and must be removed to gain access to the heater core.

    • Procedures for replacing the heater core vary with the year, make,
      and model of car. It threfore necessary to consult the manufacturer's
      repair manuals for the proper procedure for replacement.



    The heater housing is disassembled to get to the heater core.

    Heater Core



    • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.

    • Remove the heater coolant hoses.

    • Remove the cable and/or vacuum control lines (if equipped).

    • Remove the heater core securing brackets and/or clamps.

    • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.

    • To reinstall the heater core, reverse the removal steps.

    When the heater core leaks and must be repaired or replaced, it is a
    very difficult and time-consuming job primarily because of the core's
    location deep within the firewall of the car. For this reason always
    leak test a replacement heater core before installation.




  • Nate Stansfield
    Nate Stansfield Nov 15, 2009

    If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.

    When a heater core leaks, a new heater core is installed or the old one repaired.


    Heater Housing



    • The heater housing is usually under the dash and must be removed to gain access to the heater core.

    • Procedures for replacing the heater core vary with the year, make,
      and model of car. It threfore necessary to consult the manufacturer's
      repair manuals for the proper procedure for replacement.



    The heater housing is disassembled to get to the heater core.

    Heater Core



    • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.

    • Remove the heater coolant hoses.

    • Remove the cable and/or vacuum control lines (if equipped).

    • Remove the heater core securing brackets and/or clamps.

    • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.

    • To reinstall the heater core, reverse the removal steps.

    When the heater core leaks and must be repaired or replaced, it is a
    very difficult and time-consuming job primarily because of the core's
    location deep within the firewall of the car. For this reason always
    leak test a replacement heater core before installation.




  • Nate Stansfield
    Nate Stansfield Nov 15, 2009

    http://www.autozone.com/autozone/repairi...




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  • Master
  • 353 Answers

Heater Core: Service and Repair
Heater Core Replacement
HEATER CORE REPLACEMENT
TOOLS REQUIRED
SA9111E Hose Clamp Pliers
CAUTION: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of
the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the
solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person
removing the cap. Serious bodily injury may result.
REMOVAL PROCEDURE
1. Drain the cooling system. Refer to Draining and Filling Cooling System (2.0L (LSJ)) Draining and Filling Cooling System (2.2L (L61)) in
Cooling System.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
how to install a heater - 2e0f96b.jpg 3. Place a drain pan under the water pump drain port.
4. Loosen the water pump drain bolt and drain the coolant from the water pump.
5. Close and tighten the water pump drain bolt.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the water pump drain bolt to 10 N.m (88 lb in).
6. Lower the vehicle.
061b6cd.jpg 7. Reposition the heater outlet hose clamp at the heater core using SA9111E.
8. Remove the heater outlet hose from the heater core.
23220a5.jpg
9. Reposition the heater inlet hose clamp at the heater core using SA9111E.
10. Remove the heater inlet hose from the heater core.
11. Remove the heater corhow to install a heater - 943c7d2.jpg /> 943c7d2.jpg
12. Remove the heater core. aea16f1.jpg 1. Inspect the foam heater core seal on the lower HVAC case. If damaged, replace using Kent Industries adhesive black foam tape P/N 46480 or
equivalent.
2. Install the heater core inhow to install a heater - 989b3c6.jpg module.
3. Install the heater core cover.
989b3c6.jpg 4. Install the heater outlet hosehow to install a heater - 1d82ea1.jpgter core.
5. Install the hose clamp to secure the hose using SA9111E
1d82ea1.jpg
6. Install the heater inlet hose to the heater core.
7. Install the hose clamp to secure the hose using SA9111E.
8. Fill the cooling system. Refer to Draining anhow to install a heater - a6155fe.jpgooling System (2.0L (LSJ)) Draining and Filling Cooling System (2.2L (L61)) in Cooling
System.
a6155fe.jpg

Posted on Nov 15, 2009

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  • Master
  • 1,111 Answers

1st set a drain -pan under the area closest the two hoses that run into the core itself and remove the 2 clamps ..let drain the fluid .
2nd remove the old heater-core from from under the dash this requires removind a few panels inside the vehicle closest area to look to reach would be where you removed the 2 outside hoses ..a bit of time is required to reach it ..after doing so remove and reinstall new heater core and reattach all screws etc as well as the outer hoses and when everything is tight and secure refill the radiator as well as turn on the heater levers to full operation and allow the fluid back into the new core this will take some time to keep an eye on the fluid levels to also get all the air that may be in the new core itself ...

Posted on Nov 15, 2009

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  • Chevrolet Master
  • 6,826 Answers

There is a bulletin out on this year ,It maybe water from the outside coming in ,and it is at the heater core,check with the dealer,yours is most likely covered in the renewal,and I believe the heater core also,

Posted on Nov 14, 2009

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    Give me your email,and I will send you a pdf file to install heater core,roniecon@gmail.com

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    roniecon@gmail.com this is my email,to help you,give me your email,I will send you a pdf file with pictures and directions

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  • Level 3:

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  • Master
  • 10,515 Answers

Hi,

Procedure

Heater Core

  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Nov 14, 2009

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