Question about 2002 Pontiac Grand Prix

2 Answers

Yes, please explain to me how I am to remove the heater core without screwing my auto theft security system and how am I supposed to do it with out blowing out my air bags. a seriously costly $$$ fix. Not like the plain old unbolt the heater core and replace it like the old days. Car companys are out to screw us all big time, no matter what it seems like every job is $800 to $1000. How the hell do I afford that???

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  • screwyou234 Jan 03, 2011

    Gentleman I screwed up. The car is a 2002 Pontiac Grand Am GT 3.8L V6. I thought I said that and when I went back to doublecheck my previous emails I did.

    A Grand Prix 3.8L v6 looks nothing like the Grand Am GT. I have a Haynes manual which covers Pontiac Grand Am 1999-2003.

    The heater core looks nice under the injector sight shield but I do not have one for the Grand Am. The Century, Grand Prix, Intrigue, Lumina, Monte Carlo and Regal look just like in the book.

    But I cannot tear things apart without some blueprints.

    Not only that the first thing they state is SRS equpped vehicles have to be disabled or you can blow the air bag into your face. I really do not wnat to do that.

    Also with disconnecting the battery I have the auto Theft Program problems... and last but not least With no power to ther PCM Chip it looses all of its memory and has to be reprogrammed.

    I will take my chances with the Air Bag, The Auto Theft and the PCM ****. But Can I please at least have a detailed diagram for proper disasembly?

    Accordingt to the book I have it looks like I have to remove the complete dashboard including radio and steering wheel, everything. So please give me all those details and leave the "have to drain fluids and dispose of them properly to the complete idiots. I have pets and know enough not to kill them.

    What I do not know is how to remove and replace my heater core.

    It looks like I should of put in a gallon of stopleak or some othe cureall cause so far all I am getting is a headache and a big pain in my A&&. I do not mind paying you guys money and I have intimate knowledge of welding and other things that would benefit your other readers. But Dam peoplle. I realize that it is a weekend, and New Years at that, not a very happy one. So I am being patient and hoping that when everyone logs in on Monday am that a supportive answer will be coming my way.

    In this day and age of regular folks not being able to work on their cars without a computer a website such as your could be a large money make.

    I almost invested $5K in a diagnostic setup figuring if I advertised to people that do not want to have to pay a dealer $800 when their key shuts off their security system and it takes all but 20 minutes to fix. That is gold in the bank. People log in to you and I travel to their home and reprogram their vehicle...even at 1/2 price money would be rolling in as soon as word got out.

    Please folks think about this stuff, and while you are doing that...please try yo help me fix my 200 Grand Am GT 3.8L V6

    God Bless
    Bill

×

2 Answers

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  • Master
  • 10,515 Answers

Hi,

The steps involved in replacement of heater core on 02 Grand Prix are :-

The heater core is located under the dash.
Heater Core Replacement

Removal Procedure Drain the coolant.

Disconnect the inlet and outlet heater hose from the heater core.
Remove the right and left insulators. Remove the floor carpet.
Remove the rear floor air outlet duct from the holes in the floor reinforcement.
Disconnect the rear floor air outlet duct from the heater core outlet cover.
Remove the bolts from the vaccum harness bracket and position bracket aside.

Remove the heater core outlet cover screws.
Remove the heater core outlet cover.

Remove the heater core cover screws.
Remove the heater core cover.

Remove and discard the seals from the heater core cover.
Remove the caulk from the heater core cover.

Remove and discard the heater core outer seal from the heater core.

Remove the heater core clamp screw.
Remove the heater core retaining clamp.
Remove the heater core pipe retainer clamp screw.


Remove and discard the heater core center seal from the HVAC case.

Remove and discard the heater core upper seal from the HVAC lower case.

Remove and discard the heater core side seals from the HVAC lower case.

Be advised that the cost given is reasonable.The labor to change your heater core is 3.5 hours or 350 dollars.A new factory replacement core is 200 for the part plus whatever coolant you might need or fluids.The entire job should be no more than 700-800.

Let me know,if needed further assistance.

Hope i helped you.

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

Posted on Jan 03, 2011

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  • Pontiac Master
  • 17,970 Answers

So large job, but check this for removal and installing...

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Disconnect the negative battery cable.
  3. If equipped with a 3.1L engine, remove the air cleaner and duct assembly.
  4. If equipped with a 3.8L engine, remove the fuel injector sight shield by performing the following procedures:
    1. Clean the area around the oil filler cap/tube assembly location.
    2. Rotate the oil filler cap/tube assembly counterclockwise from the valve cover.
    3. Lift the fuel injector sight shield up at the front and slide it from the rear engine bracket.
    4. Reinstall the oil filler cap/tube assembly in the valve cover.
      CAUTION Before draining the cooling system, allow the engine to cool to relieve the systems internal pressure and to avoid scalding coolant.
  5. Drain the cooling system by performing the following procedure:
    1. Raise and safely support the front of the vehicle.
    2. Remove and clean the coolant recovery tank.
    3. Place a 2 gallon pan under the radiator to catch the coolant.
    4. At the bottom of the radiator, open the drain valve and drain the coolant to a level lower than the heater core.
    5. Remove the radiator cap and open the air bleed screw (2-3 turns) located on top of the thermostat housing.
    6. After sufficient coolant has been drained from the system, close the drain valve.
      CAUTION Engine coolant is a hazardous waste; it should be stored for reuse or submitted for recycling. NEVER dispose of it by dumping it into the environment.

  6. Disconnect and plug the heater hoses at the heater core.
  7. If equipped, remove the lower center console by removing or disconnecting the following:
    Cigarette lighter Automatic transaxle shift handle Upper console trim plate from the front floor console by unsnapping it Electrical connectors from the upper console trim plate and remove the trim plate CD storage compartment from the front floor console by unsnapping it Raise the front floor console armrest and remove the compartment mat Console-to-chassis bolts and screws Electrical connectors from the console and remove the console from the vehicle
  8. Remove the lower instrument panel lower compartment by removing or disconnecting the following:
    Lower right instrument panel insulator Compartment-to-panel bolts and screws, from under the instrument panel compartment Instrument panel compartment door screws and the door Instrument panel compartment screws and plastic clips; then slide the compartment from the instrument panel Electrical connector from the compartment Ashtray and bracket, if necessary Lower heater duct Heater core cover and discard the cover seals Heater core mounting clip and bracket Heater core

    Yes, please explain to me how I am to remove the - zjlimited_385.jpg

    Fig. View of the radiator drain valve-Century, Grand Prix, Intrigue, Lumina, Monte Carlo and Regal


    zjlimited_386.jpg

    Fig. View of the fuel injector sight shield-Century, Grand Prix, Intrigue, Lumina, Monte Carlo and Regal


    zjlimited_387.jpg

    Fig. Exploded view of the instrument panel-Century, GrandYes, please explain to me how I am to remove the - zjlimited_388.jpgLumina, Monte Carlo and Regal


    zjlimited_388.jpg

    Fig. View of the heater core-Century, Grand Prix, Intrigue, Lumina, Monte Carlo and Regal

To install:
  1. Install and connect the following:
    Heater core in the vehicle Heater core mounting clip and bracket New seals on the heater core cover Heater core cover and torque the bolts to 13 inch lbs. (1.5 Nm) Lower heater duct, if removed Ashtray and bracket, if removed
  2. Install the lower instrument panel lower by installing or connecting the following:
    Electrical connector to the compartment Slide the compartment into the instrument panel; then, secure it with screws and plastic clips Instrument panel compartment door and screws Compartment-to-panel bolts and screws, located under the instrument panel compartment Lower right instrument panel insulator
  3. If equipped, install the lower center console install or connect the following:
    Console in the vehicle and connect the electrical connectors Console-to-chassis bolts and screws, tighten in sequence beginning at the front right and continue in a clockwise order to 106 inch lbs. (12 Nm) Armrest compartment mat and lower the front floor console armrest C/D storage compartment into the front floor console Electrical connectors to the upper console trim plate and snap the trim plate onto the console Automatic transaxle shift handle and the cigarette lighter Heater hoses to the heater core and secure with the clamps
  4. Refill the cooling system by performing the following procedure:
    1. Close the radiator drain valve.
    2. If the air bleed screws (located at the top of the thermostat housing) is closed, open it by turning it 2-3 turns.
    3. Slowly add coolant until it reaches the radiator neck.
    4. Wait for 2 minutes and recheck the coolant level; then, add more coolant if necessary.
    5. Fill the coolant reservoir to the COLD mark.
    6. Close the air bleed screw.
      WARNING Do not over-tighten the air bleed screw for it is made of brass.
    7. Install the radiator cap and make sure that the arrows align with the overflow tube.

  5. continue...

Posted on Jan 01, 2011

  • ZJ Limited
    ZJ Limited Jan 01, 2011





    1. If equipped with a 3.8L engine, install the fuel injector sight shield by performing the following procedures:



      1. Remove the oil filler cap/tube assembly from the valve cover.


      2. Slide the fuel injector sight shield into the rear engine bracket and lower it into place.


      3. Reinstall the oil filler cap/tube assembly in the valve cover.
        Twist it clockwise to lock the detent on the tube into the notch in the
        valve cover.







    2. If equipped with a 3.1L engine, install the air cleaner and duct assembly.


    3. Connect the negative battery cable.







    1. Before servicing the vehicle, refer to the Precautions Section.


    2. Disconnect the negative battery cable.


    3. Drain the engine coolant into a clean container for reuse.


    4. On Grand Prix or Regal equipped with a 3.1L engine, remove the air cleaner and duct assembly.


    5. On Grand Prix or Regal equipped with a 3.8L engine, remove the fuel injector sight shield.


    6. Remove or disconnect the following:


      Lower floor console, if equipped

      Both instrument panel insulators

      Heater core outlet cover screws and the outlet cover

      Heater core cover screws and the cover

      Heater core seals. Discard the seals

      Heater core outer seal. Discard the seal

      Heater core line clamp screw, the retaining clamp and the pipe retainer clamp screw

      Heater core from the lower case

      Heater core lower, center, upper and side seals from the lower heater core case. Discard the seals










      Fig. View of the heater core outlet cover-Grand Prix, Intrigue and Regal













      Fig. View of the heater core cover-Grand Prix, Intrigue and Regal













      Fig. Location of the heater core cover seals-Grand Prix, Intrigue and Regal













      Fig. View of the heater core outer seal-Grand Prix, Intrigue and Regal













      Fig. View of the heater core-Grand Prix, Intrigue and Regal













      Fig. View of the heater core lower, center, upper and side seals of the lower heater core case-Grand Prix, Intrigue and Regal



    To install:




    1. Install or connect the following:


      New heater core lower, center, upper and side seals to the lower heater core case

      Heater core to the lower case

      Pipe retainer clamp screw, the retaining clamp and the heater core line clamp screw

      Heater core outer seal

      Heater core seals

      Heater core cover and the outlet cover screws, then, tighten the screws to 13 inch lbs. (1.5 Nm)

      Heater core outlet cover and the outlet cover screws, then, tighten the screws to 13 inch lbs. (1.5 Nm)

      Both instrument panel insulators

      Lower floor console, if equipped







    2. On Grand Prix or Regal equipped with a 3.8L engine, install the fuel injector sight shield.


    3. On Grand Prix or Regal equipped with a 3.1L engine, install the air cleaner and duct assembly.


    4. Refill the engine cooling system.


    5. Connect the negative battery cable.


    6. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.




    Hope helps with this.

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1 Answer

Rottenweiler630@My 84 s-10 blazer has developed a heater core leak. Where can I get the procedure for R & R of the core?


Please don't forget to rate! Thanks!

Removal & Installation

The heater core is removable from under the right side of the instrument panel.

  1. Disconnect the negative battery cable.
  2. Position a drain pan under the radiator, open the drain **** and drain the cooling system to a level below the heater core.

Plug the heater core tubes to avoid spilling coolant in the passenger compartment during removal.

  1. Disconnect the heater-to-engine coolant hoses from the core tubes on the firewall, in the engine compartment.

c17hydro_116.gif

Exploded view of a common heater core and case assembly



c17hydro_117.gif

If necessary, loosen and remove the under dash cabin light retaining bolt



c17hydro_118.gif

With the bolt removed, the light and housing may be repositioned out of the way


On some early model vehicles, the cabin light mounted under the dash may interfere with cover removal. If necessary, loosen the retaining bolt and reposition the light housing with the wiring attached.

  1. From the passenger compartment (under the dash) remove the heater core rear case cover-to-cowl screws, then remove the cover from the vehicle.

Be sure that all are removed before attempting to remove the cover. If necessary, unbolt and reposition all/part of the dashboard for better access.

  1. Remove the straps or brackets from each end of the heater core.
  2. Carefully remove the heater core from the cowl and case.

To install:

  1. Insert the heater core into the case, taking care not to damage the tubes as they are inserted through the cowl.
  2. Install the straps or brackets to the ends of the heater core and secure using the retaining screws.
  3. Install the heater core rear case cover and secure using the retaining screws.
  4. If moved for access, reposition and secure the dash mounted cabin light and housing.
  5. Connect the heater-to-engine coolant hoses to the core tubes.
  6. Connect the negative battery cable, then properly refill the engine cooling system.
  7. Run the engine at normal operating temperatures and check for leaks.

There is a bunch of pictures to post so please keep refreshing your page. This is gonna take a few minutes...

Jan 21, 2011 | 1984 Chevrolet S-10

2 Answers

How do i fix the heater core on my ford taurus 1995


Hi there,

Remove heater/evaporator case. Remove vacuum source line from heater core tube seal. Remove seal from heater core tubes.
Remove heater core access cover screws. Remove access cover and seal from heater/evaporator case. Lift heater core and case seals out of heater/evaporator case.
Installation
If installing new heater core, transfer case seals to new core. Install heater core and seals into heater/evaporator case. Install heater core access cover on case. Install seal on heater core tubes. To complete installation, reverse removal procedure. Evacuate and charge A/C system. Refill cooling system.

HEATER/EVAPORATOR CASE
Removal
  • Disconnect negative battery cable. Drain coolant from radiator. Gently pull instrument panel away from right side of dash panel.
  • Discharge A/C system using approved refrigerant recovery/recycling equipment. Disconnect heater hoses from heater core. Plug heater core tubes or drain coolant by blowing coolant from heater core using low pressure compressed air. Disconnect vacuum supply hose from inside engine compartment.
  • Disconnect A/C lines from evaporator core. Plug A/C lines and evaporator core tubes. Remove instrument panel assembly brace to evaporator case bracket screw. Remove assembly brace.
  • Remove floor register and rear floor duct from bottom of heater/evaporator case. Remove nuts securing heater/evaporator case to firewall. Remove 2 screws securing support brackets to cowl top panel. Carefully pull heater/evaporator case away from firewall. Remove heater/evaporator case.
  • To install, reverse removal procedure. Evacuate and charge A/C system. Refill cooling system.
INSTRUMENT PANEL
Removal & Installation
  • Position front wheels in straight-ahead position. Disable air bag system. See AIR BAG RESTRAINT SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT section. Disconnect negative battery cable. Remove steering column trim shrouds.
  • Disconnect all electrical connections from steering column switches. Remove cover from under steering column. Remove 4 bolts and reinforcement from under steering column. Disconnect parking brake release control motor from parking brake and ignition switch connector.
  • Disengage insulator retainer. Remove insulator. Remove 4 nuts and reinforcement below steering column. Remove 4 nuts securing steering column to instrument panel and lower column to front seat. Disconnect PRNDL cable (A/T models).
  • Ensure ignition switch is locked to prevent steering column from turning. Remove 4 instrument cluster retaining screws. Disconnect speed control cable and vehicle speed sensor (if equipped). Disconnect electrical connectors and remove instrument cluster. At steering column opening, remove one bolt securing instrument panel to brace. Remove one instrument panel brace bolt (below radio area).
  • Remove sound insulator under glove box by removing 2 push nuts securing insulator to studs on climate control case. Remove glove box door and compartment. Remove air cleaner housing, battery and battery tray. Disconnect wires of main wire loom in engine compartment. Disengage rubber grommet from firewall. Feed wiring into passenger compartment through hole in firewall.
  • Remove right and left kick panels. Disconnect wires from instrument panel at right and left kick panel sides. Remove screws on left and right sides of instrument panel.
  • Pull up to unsnap right and left speaker opening covers. Remove speaker covers. Working through steering column and glove box openings, reach under instrument panel and disconnect electrical connectors, vacuum hoses, A/C-heater control panel cables, and radio antenna cable.
  • Support instrument panel. Remove 3 screws attaching top of instrument panel to cowl top. Disconnect remaining wires. Remove instrument panel. To install instrument panel, reverse removal procedure.

Hope this helps...

Jan 17, 2011 | 1995 Ford Taurus

2 Answers

I am wanting to change the heater core in my 2004 Suziki Forenza myself. I am looking for a maintenance manual for this model vehicle or someone with the knowledge of how the dash comes off.


you can go to any auto parts store and buy a haynes manual for your specific vehicle. they are based on a complete teardown of vehicle. the manuals are only about 20 to 25 dollars. have a good day !! ( then you will have it just in case something else goes wrong !!)

Dec 19, 2010 | Suzuki Forenza Cars & Trucks

1 Answer

I need to replace the heater core in my 1992 f-350 7.3 des.


Heater Core REMOVAL & INSTALLATION Fig. 1: Heater core removal for 1987-88 models 84926006.gif
Fig. 2: Heater core removal - 1988-96 models 84926007.gif
Without Air Conditioning
  1. Drain the cooling system to a level below the heater core. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  2. Disconnect the coolant hoses at the heater core tubes.
  3. From inside the passenger's compartment, remove the 7 screws that secure the heater core access cover to the plenum chamber. Remove the cover. On some models, it might be easier to first remove the glove compartment.
  4. Remove the heater core.
  5. Installation is the reverse of removal. Replace any damaged sealer.
With Air Conditioning Fig. 3: Disconnect the heater hoses at the firewall 88286p15.jpg
Fig. 4: Remove the glovebox 88286p16.jpg
Fig. 5: Remove the heater core access cover from the plenum chamber 88286p17.jpg
Fig. 6: Remove the heater core from the vehicle 88286p18.jpg
  1. Drain the cooling system to a level below the heater core. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  2. Disconnect the coolant hoses at the heater core tubes.
  3. Remove the glove compartment.
  4. Disconnect the temperature and function cables.
  5. From inside the passenger's compartment, remove the 7 screws that secure the heater core access cover to the plenum chamber. Remove the cover.
  6. Remove the heater core.
  7. Installation is the reverse of removal. Replace any damaged sealer.
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Dec 15, 2010 | 1992 Ford F350

1 Answer

How to replace a heater core


Heater Core Removal & Installation Front To Remove:
  1. Make sure you have the anti-theft codes for the audio and the navigation system, and then write down the audio presets.
  2. Disconnect the negative cable from the battery.
  3. From under the hood, disconnect the heater valve cable from the heater valve. Turn the heater valve arm to the fully opened position.
  4. When the engine is cool, drain the engine coolant from the radiator.
  5. Disconnect the inlet heater hose and the outlet heater hose from the heater core.
  6. Remove the mounting nut from the heater unit. Take care not to damage or bend the fuel lines, the brake lines, and related parts.
  7. Remove the dashboard.
  8. Remove the evaporator.
  9. Remove the mounting bolts and remove the heater unit. Front heater unit honda-10-00-4128.gif

  10. Remove the self-tapping screws and the clamp.
  11. Carefully pull out the heater core so you don't bend the inlet and outlet pipes.
Front heater core honda-10-00-4129.gif

To Install:
  1. Using care, install the heater core to the heater unit and secure.
  2. Using care, install the heater unit and tighten mounting nuts and bolts to 7 ft-lb (10 Nm).
  3. Install the evaporator.
  4. Install the dashboard.
  5. Connect the inlet heater hose and the outlet heater hose to the heater core.
  6. Connect the heater valve cable to the heater valve.
  7. Refill the cooling system with engine coolant.
  8. Adjust the heater valve cable.
  9. Make sure that there is no coolant leakage.
  10. Make sure that there is no air leakage.
  11. Connect the negative battery cable.
  12. Perform the power window control unit resetting procedure.
  13. Enter the anti-theft codes for the audio and the navigation system, and then enter the audio presets.
Rear To Remove:
NOTE: The rear blower motor, the rear heater core, the blower screen, the rear blower resistor (heating/air conditioning system) and the rear power transistor (climate control system), the rear air mix control motor (climate control system) , the rear mode control motor and the rear expansion valve can be replaced without removing the rear heater-A/C unit.
  1. Remove the self-tapping screws and the clamp, and then remove the bolts and the rear evaporator lines with the rear expansion valve. If necessary, remove the rear expansion valve. Use a second wrench to hold the other fitting on the valve so the rear evaporator lines won't twist. Leave the first fitting loosely connected so you can use it to hold the valve while you loosen the second fitting.
  2. Remove the rear heater hoses.
  3. If necessary, remove the rear blower motor, the rear heater core, the blower screen, the rear blower resistor (heating/air conditioning system), the rear power transistor (climate control system), the rear air mix control motor and the rear mode control motor.
  4. Remove the self-tapping screws and the lower housing.
  5. Remove the self-tapping screws, and carefully separate the left upper housing from the right upper housing. Remove the rear heater core.
Rear evaporator assembly honda-10-00-4116.gif

To Install:
  1. Replace the rear heater core.
  2. Attach the heater hoses.
  3. Make sure no air is leaking from the left upper housing and the right upper housing fitting and from the upper housings and the lower housing fitting.
  4. Before reassembly, make sure that the rear air mix control linkage and door move smoothly without binding.
  5. Before reassembly, make sure that the rear mode control linkage and door move smoothly without binding.
  6. Reassemble the housing.
  7. After reassembly, make sure the rear air mix control motor runs smoothly.
  8. After reassembly, make sure the rear mode control motor runs smoothly.
  9. Refill the cooling system and make sure that there is no coolant leakage.
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Oct 16, 2010 | 2005 Honda Pilot

2 Answers

Radiator leaking inside the car can it be changed


Yes it can be...just replace the heater core:

  1. Drain the cooling system.
  2. Remove the heater unit assembly. Have a lot of towels handy for the leakage of coolant that may spill into your interior.
  3. Remove the fasteners securing the core to the unit, remove the plates and clamps. Pull upwards to remove the core from the unit.
To install:
  1. Inspect the core fins for any blockage. Using compressed air, clean them.
  2. Install the core into the unit placing the plates and clamps into position. Tighten the core screws.
  3. Install the heater unit into the vehicle.
  4. Fill the cooling system


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May 12, 2010 | 1989 Toyota Land Cruiser

1 Answer

I need to replace the heat core in my blazer... how do i do this?


Draining the Cooling System
  • Park the vehicle on a level surface. If the engine has been running allow it to cool completely.
  • Drain the cooling system. Remove the radiator cap from the radiator. Locate the petcock valve on the lower corner of the radiator. Place a waste oil collection pan underneath the petcock valve and turn it counterclockwise to open. Allow the cooling system to drain completely.
  • Label and remove the heater hoses from the heater core. The heater hoses will connect to the heater core in the engine bay, on the firewall, on the passenger side of the vehicle. Use either the Phillips or the flat-blade screwdriver to loosen the hose clamps that secure the hoses to the heater core. Then pull the hoses off the heater core.
Removing the Heater Core
  • Remove the heater core cover. Move to inside the passenger compartment. Locate the heater case. It will be bolted to the firewall, below the dash on the passenger side of the vehicle. Use an appropriate sized socket or wrench to remove the five screws that connect the heater core cover to the heater case, and remove the cover.
  • Remove the steel straps that secure the heater core to the heater case. Unscrew the four screws that connect the steel straps to the heater case using a socket or wrench and remove the straps.
  • Remove the heater core by pulling it out of the heater case.
Installing the Heater Core
  • Place the new heater core into position inside the heater case. Be sure to carefully guide the inlet and outlet tubes through the holes in the firewall.
  • Reinstall the heater core retaining straps, by reinstalling the four screws that secure them.
  • Place the heater core cover into position over the heater case and reinstall the five screws that secure it.

Refilling the Cooling System
  • Reconnect the heater hoses to the heater core. Slide the hoses onto the inlet and outlet fittings that extend through the firewall, and tighten the hose clamps.
  • Close the petcock valve on the lower corner of the radiator by turning it clockwise.
  • Refill the radiator with a 50/50 mix of antifreeze and water.
  • Reinstall the radiator cap onto the radiator.
  • Run the engine and visually inspect for leaks.
Good luck and take your time, keep me posted and don't forget to rate please.

Jan 08, 2010 | 1989 Chevrolet S-10 Blazer

1 Answer

What do i have to remove to replace the heater core in my 1991 chevy s10 with a 2.8 v6


Draining the Cooling System
  • Park the vehicle on a level surface. If the engine has been running allow it to cool completely.
  • Drain the cooling system. Remove the radiator cap from the radiator. Locate the petcock valve on the lower corner of the radiator. Place a waste oil collection pan underneath the petcock valve and turn it counterclockwise to open. Allow the cooling system to drain completely.
  • Label and remove the heater hoses from the heater core. The heater hoses will connect to the heater core in the engine bay, on the firewall, on the passenger side of the vehicle. Use either the Phillips or the flat-blade screwdriver to loosen the hose clamps that secure the hoses to the heater core. Then pull the hoses off the heater core.
Removing the Heater Core
  • Remove the heater core cover. Move to inside the passenger compartment. Locate the heater case. It will be bolted to the firewall, below the dash on the passenger side of the vehicle. Use an appropriate sized socket or wrench to remove the five screws that connect the heater core cover to the heater case, and remove the cover.
  • Remove the steel straps that secure the heater core to the heater case. Unscrew the four screws that connect the steel straps to the heater case using a socket or wrench and remove the straps.
  • Remove the heater core by pulling it out of the heater case.
Installing the Heater Core
  • Place the new heater core into position inside the heater case. Be sure to carefully guide the inlet and outlet tubes through the holes in the firewall.
  • Reinstall the heater core retaining straps, by reinstalling the four screws that secure them.
  • Place the heater core cover into position over the heater case and reinstall the five screws that secure it.

Refilling the Cooling System
  • Reconnect the heater hoses to the heater core. Slide the hoses onto the inlet and outlet fittings that extend through the firewall, and tighten the hose clamps.
  • Close the petcock valve on the lower corner of the radiator by turning it clockwise.
  • Refill the radiator with a 50/50 mix of antifreeze and water.
  • Reinstall the radiator cap onto the radiator.
  • Run the engine and visually inspect for leaks.
Good luck and take your time.

Dec 10, 2009 | 1991 Chevrolet S-10

2 Answers

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.

Jun 18, 2009 | 2000 Daewoo Nubira

1 Answer

86 IROC heater core


Removal & Installation
1.Disconnect negative battery cable. Drain cooling system. Disconnect heater hoses from heater core, and plug openings. Detach hood release cable. Remove both dash side panels. Remove left and right lower dash trim panels. Remove glove box. Remove 7 screws securing center accessory console. Disconnect wires on accessory console, and remove accessory console. Remove control cables at heater case.

2.Remove 4 bolts securing steering column to instrument panel. Lower steering column. Remove 2 bolts from instrument panel mounts at far left and right sides of instrument panel. Remove defroster duct trim on top of dash. Remove instrument cluster screws. Pull instrument cluster out slightly. Disconnect electrical connections and speedometer cable from instrument cluster. Remove instrument cluster.

3.Disconnect all electrical connectors from instrument panel. Remove parking brake console. Remove glove box. Remove bolts securing instrument panel support to floorpan. Remove all instrument panel mounting bolts. Remove instrument panel.

4.Separate heater case from blower. Remove 3 nuts and pull heater

Dec 06, 2008 | 1986 Chevrolet Camaro

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