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Replacing heater core 1987 elcamino

Removing top of AC heat core cover have removed all screws and electrical plugs and cut loose sealant still having problems getting cover of

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 220 Answers

SOURCE: Removing the heater core from 2000 silverado

When I replaced the heater core on my 95 Suburban, I seem to remember having to disconnect the A/C lines on the firewall for the evaporator. There were also several nuts to remove on the engine firewall side from studs on the heater box that pass thru the firewall. It is definately a lot of work.

Good luck.

Posted on Jan 10, 2009

  • 3600 Answers

SOURCE: removing evaporator in 93 chevy pickup

Did you connect the lines? and did you break loose the tar that holds itto the car and seals the holes for the pipe? You maya have to remove the outter core cover to getto the last screws to get it out.

Posted on Jul 18, 2009

  • 580 Answers

SOURCE: removing heater core from a 93 chevrolet blazer

heater core under dash passenger side . Remove 2 hoses on fire wall carefully then take cover off the heater box & remove heater core. be careful not always an easy job!

Posted on Sep 11, 2009

ZJLimited
  • 17970 Answers

SOURCE: trying to replace heater core 1994 s10 4 cyl

GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide



Heater Core - REMOVAL & INSTALLATION
1994-97 Vehicles
(see Figure 1)

44d2ba8.jpg

Fig. 1: Exploded view of a common heater core and case assembly

  1. Disconnect the negative battery cable and properly drain the engine cooling system to a level below the heater core.
  2. Disconnect the heater hoses from the core tubes near the cowl.
The instrument panel carrier is designed not only to provide access to parts through removal of the carrier components, but the carrier will also tilt downward as a complete assembly to allow access from the top. If this is desired, remove the retainer screws along the top and bottom of the carrier assembly (refer to the figure). The instrument panel will then tilt as an assembly into the cab. It is necessary to unbolt and lower the steering column from the carrier to allow for maximum movement of the instrument panel.
  1. The instrument panel must be removed or repositioned for access to the heater core case. Unbolt and either tilt the instrument panel forward or disengage the instrument panel components and remove the panel from the vehicle. In most cases, tilting the panel forward should be sufficient for the necessary access.
  2. Unfasten the heater core rear case retaining screws, then remove the rear case for access to the heater core.
  3. Loosen the retainers and remove the heater core retaining straps.
  4. Remove the heater core and seals.
To install:
  1. Install the heater core and seals, taking care not to damage the core tubes when inserting them through the cowl.
  2. Install and secure the core retaining straps.
  3. Install the rear case and secure using the screws.
  4. Reposition and secure the instrument panel and components. Tighten the cowl screws to 17 inch lbs. (1.9 Nm) and the lower instrument panel screws to 66 inch lbs. (7.5 Nm).
  5. Connect the heater 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 temperature, then check for leaks.

Good luck (remember rated this post).

Posted on May 19, 2010

Testimonial: "thanks so much.... i have lost the feeling of hopelessness .... thanks to you.... gmo"

SOURCE: The rear heater in my 2000 astro van blows but

Are you sure it has rear heat? Most only have rear A/C.

Hope this helps

Posted on Feb 14, 2011

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1 Answer

How can i get to my heater core to replace it on a 86 cadillac fleetwood 5.0


BROUGHAM

1. Disconnect electric-al connectors at blower motor, compressor cycling switch, power

module and radio lead-in connections.

2. Remove righthand windshield washer nozzle.

3. Remove righthand secondary air inlet screen from plenum.

4. Partially remove rubber molding above plenum.

5. Remove remaining screws and the primary inlet screen.

6. Remove blower motor.

7. Remove two screws securing compressor cycling switch to module and position

switch out of way.

8. Remove AC module cover attaching screws and the cover.

9. Disconnect heater hoses at heater core.

10. Remove screw and retainer holding heater core to frame top.

11. With temperature door in max. hot position, reach through temperature housing and

push lower forward comer of heater core away from housing, then rotate core

parallel to housing.

12. Remove heater core.

13. Reverse procedure to install.

Dec 23, 2010 | 1986 Cadillac Fleetwood

1 Answer

Where is the heater core located


Heater Core REMOVAL & INSTALLATION NOTE: Be sure to consult the laws in your area before beginning any procedure which requires servicing the air conditioning system. In some states, it is illegal to perform repairs involving refrigerant unless the work is done by a certified technician. CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the 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. NOTE: When removing the instrument panel, it may be beneficial to have a friend or assistant help you. Without Air Conditioning
  1. Disconnect the negative battery cable.
  2. Remove the instrument panel on 1986-89 vehicles as follows:
    1. Remove the four screws retaining the steering column opening cover, then remove the cover.
    2. Remove the sound insulator under the glove compartment by removing the two push nuts securing the insulator to the studs on the climate control case.
    3. Remove the steering column trim shrouds, then tag and disengage all electrical connections from the steering column switches.
    4. Remove the four screws at the steering column bracket to remove the steering column.
    5. Remove the screws retaining the lower left and radio finish panels, then remove the panels by snapping them out.
    6. Remove the cluster opening finish panel retaining screws. On Taurus remove the jam nut behind the headlight switch and the screw behind the clock or clock cover. Remove the finish panel by rocking the upper edge toward the driver.
    7. Disconnect the speedometer cable by reaching up under the instrument panel and pressing on the flat surface of the plastic connector. The panel can be removed with the cluster installed.
    8. Release the glove compartment assembly by depressing the side of the glove compartment bin and swinging the door/bin down.
    9. Using the steering column, cluster and glove compartment openings and by reaching under the instrument panel, tag and disengage all electrical connections, vacuum hoses, heater control cables and the radio antenna cable.
    10. Tag and disengage all underhood electrical connectors of the main wire loom. Disengage the rubber grommet from the dash panel and push the wire and connectors into the instrument panel area.
    11. Remove the right and left speaker opening covers by snapping them out.
    12. Remove the two lower instrument panel-to-cowl side retaining screws from the right and left side. Remove the instrument panel brace retaining screw from under the radio area. On Sable, remove the defroster grille by snapping it out.
    13. Remove the three instrument panel upper retaining screws, then remove the instrument panel.
  3. Remove the instrument panel on 1990-95 vehicles as follows:
    1. Position the front wheels in the straight-ahead position.
    2. Disconnect the positive battery cable.
    3. Remove the ignition lock cylinder and, if equipped, remove the tilt lever.
    4. Remove the steering column trim shrouds. Tag and disengage all electrical connections from the steering column switches.
    5. Remove the four bolts and opening cover, and the two bolts and reinforcement from under the steering column.
    6. Disengage the insulator retainer and remove the insulator. Remove the four nuts and reinforcement from under the steering column. NOTE: Do not rotate the steering column shaft.
    7. Remove the four nuts retaining the steering column to the instrument panel, disconnect the shift indicator cable and lower the column on the front seat. Install the lock cylinder to make sure the steering column shaft does not turn.
    8. Remove bolt at the steering column opening attaching the instrument panel to the brace. Remove instrument panel brace retaining bolt from under the radio area.
    9. Remove the sound insulator under the glove compartment by removing the two push nuts that secure the insulator to the studs on the climate control case.
    10. Disconnect the wires of the main wire loom in the engine compartment. Disengage the rubber grommet from the dash panel, then feed the wiring through the hole in the dash panel into the passenger compartment.
    11. Remove the right and left cowl side trim panels. Disconnect the wires from the instrument panel at the right and left cowl sides.
    12. Remove screw each from the left and right side retaining the instrument panel. Pull up to unsnap the right and left speaker opening covers and remove.
    13. Release the glove compartment assembly by depressing the side of the glove compartment bin and swinging the door/bin down.
    14. Using the steering column and glove compartment openings and by reaching under the instrument panel, tag and disengage all electrical connections, vacuum hoses, heater control cables, speedometer cable and radio antenna cable.
    15. Close the glove compartment door, support the panel and remove the three screws attaching the top of the instrument panel to the cowl top and disconnect any remaining wires. Remove the panel from the vehicle.
  4. Drain the coolant from the radiator.
  5. Disconnect and plug the heater hoses at the heater core. Plug the heater core tubes.
  6. Disconnect the vacuum supply hose from the inline vacuum check valve in the engine compartment. Remove the screw holding the instrument panel shake brace to the heater case and remove the shake brace.
  7. Remove the floor register and rear floor ducts from the bottom of the heater case. Remove the three nuts attaching the heater case to the dash panel in the engine compartment.
  8. Remove the two screws attaching the brackets to the cowl top panel. Pull the heater case assembly away from the dash panel and remove from the vehicle.
  9. Remove the vacuum source line from the heater core tube seal and remove the seal from the heater core tubes.
  10. Remove the four heater core access cover attaching screws and remove the access cover from the heater case. Lift the heater core and seals from the heater case. To install:
  11. Transfer the three foam core seals to the new heater core. Install the heater core and seals into the heater case.
  12. Position the heater case access cover on the case, then install the four retaining screws.
  13. Install the seal on the heater core tubes, then install the vacuum source line through the seal.
  14. Position the heater case assembly to the dash panel and cowl top panel at the air inlet opening. Install the two screws to attach the support brackets to the cowl top panel.
  15. Install the three nuts in the engine compartment to attach the heater case to the dash panel. Install the floor register and rear floor ducts on the bottom of the heater case.
  16. Install the instrument panel shake brace and screw to the heater case.
  17. Install the instrument panel by reversing the removal procedure.
  18. Connect the heater hoses to the heater core. Connect the black vacuum supply hose to the vacuum check valve in the engine compartment.
  19. Fill the radiator and bleed the cooling system.
  20. Connect the negative battery cable and check the system for proper operation. Fig. 1: Location of the vacuum source line 86876016.gif
    Fig. 2: Heater core cover location 86876017.gif

Dec 19, 2010 | 1987 Ford Taurus

1 Answer

How to take the steering wheel off a 1995 2.2 liter pontiac sunfire to change the heater core


Replacing the heater core in a Pontiac Sunfire is a very difficult and complex process. The heater core is kept within the car's heating/air conditioning module behind the instrument panel. So many other parts have to be drained and removed from the car to reach the heating/air conditioning unit that you may be better off leaving this to a professional mechanic--especially one licensed to work on air conditioning units.
Things You'll Need:

  • Wrench
  • Container
  • Air conditioning reclaimer
  • Hose clamp pliers
  • Screwdrivers
  • Heater core
  • R134a refrigerant
  • Recharge service hose
  1. Removing the Core
    • Make sure the car is cool, the front wheels are facing forward and the ignition switch is off. Drain the engine coolant by removing the drain plug at the radiator and letting the coolant pour into a clean container, then do the same at the engine block's drain plug. Recover the refrigerant by connecting an air conditioning reclaimer to the system high and low side fittings as its instructions state.
    • Disconnect the evaporator lines to the evaporator by removing its bolt and disconnect the heater hoses from the core by loosening the hose clamps with clamp pliers. Remove the drain tube from the evaporator case. Disconnect the negative battery cable.
    • Remove all the trim covers and panels from the instrument panel; some of these are screwed on and some require a flat bladed tool. Remove all air distribution ducts from the panel, the air bags, the steering wheel, the radio, the tilt and washer levers and all electrical connectors, then unscrew and remove the instrument panel from the car. Unbolt the cross vehicle beam, remove its wiring harness and remove the beam.
    • Remove the air outlet in the floor. Disconnect the wiring harness for the heater/air conditioner and the electrical connectors at the blower's motor and resistor.
    • Remove the heater/air conditioning module by removing its attaching bolts and the assembly screw. Remove the heater cover case by removing its heat stakes and screws and remove the heater core.
    • Install the replacement core into the heater/air conditioner module, then re-connect the heater core cover case. Install the assembly in the vehicle, aligning the mounting bracket to the front of the dash slot and mounting bolt hole. Reconnect the electrical connectors and wiring harness and install the floor air outlet.
    • Reinstall the cross vehicle beam and every component of the instrument panel. Reconnect the negative battery cable.
    • Install the drain tube back on the evaporator case. Connect the hater hoses and the evaporator lines.
    • Recharge the air conditioner. Connect a can of R134a refrigerant to the air conditioner's low side service fitting with a recharge service hose and a high pressure gauge to the high side fitting. Open the service hose valve while the car runs with the A/C at the max and let the vapor flow until the gauge reads between 225 and 250 PSI.
    • Refill the cooling system at the radiator filler neck. Use fresh coolant if the old liquid is dirty in any way



Dec 11, 2010 | 2005 Pontiac Sunfire

2 Answers

Heater hot/cold control knob doesn't work need to have the hot air.


Check the motor on the top of the heater plenum. It turns a shaft to shift the blender door which controls the input to this plenum either the heater core or the evaporator core (ac). You may find the motor is OK but the shaft (plastic) has broken and the blender door has to be replaced. This is a costly job that involves removing this plenum after removing the dash. A shortcut I found online was to cut a hole under the blender door and replace it through this opening. After replacing you can seal up the hole with epoxy. I cut three sides of a square hole leaving the back uncut. Pull down and the blender door can be removed. My problem was on a 1997 Explorer. _6.gif

Nov 22, 2010 | 1998 Ford Explorer

2 Answers

How to install a new top and bottom hvac heater hose fitting for a 2002 buick lesabre custom


The hoses are moved by turning them a few degree's, then pulling them off. See diagram below.

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Jun 19, 2010 | 2002 Buick LeSabre

1 Answer

Heater core 1987 lichon signature 5.o location


heater core is located on the front passenger side next to your ac evaporator assembly, your heater unit uses engine coolant water as a heater , the reason why you smell anti freeze because your core has a leak.
you can disassemble the unit if you have the right tool and by removing the front glove box and console panel to expose and give way to check that unit, it normally fastened by screws and a few bolts and nuts.

Apr 10, 2010 | 1987 Lincoln Town Car

1 Answer

Heater coil replacement


I just did mine last weekend and my my its a job I pulled the seats out to make it easier and if it has ac that will have to be discharged also. well start by removing your center console2_bing.gif then your radio then take off your dash speaker covers off and your defroster covers off you will see a bunch of bolts that hold on your dash under all them covers so go ahead and remove all the bolts then move down under the dash and there is a bolt on both corners of the dash that goes into the lower panel remove them I also removed the bolts the hold the steering wheel up so it can lower down alittle to give you more room then ontop of your gauge cluster you will see two screws that holds the gauge cover on remove them and in the cover you also have headlight switch and hazzered and rear defroster make sure you unplug the harnesses to them then you will have to start unhooking all the other plugs and wiring that plugs into things on dash then get the dash out oh the way and go under hood and remove heater2_bing.gif core hoses and you will need a specal tool to remove ac line then you will see one bolt next to the heater core hoses so go ahead and remove that then back to inside you will see the brackets that hold on heater Assembly onto the car2_bing.gif and go ahead and remove them and pull whole assembly out and you will see the heater core cover its held on with 4 screws so remove them and finally remove heater core and get some sealant to put around the new heater core this is a lot of work it took me about 12 hours to complete and get you a bucket because their is alot of nuts, bolts, clips so good luck

Jan 16, 2010 | 1988 Ford Mustang

1 Answer

How to put in a 1989 ford mustang heating core


I just did mine last weekend and my my its a job I pulled the seats out to make it easier and if it has ac that will have to be discharged also. well start by removing your center console then your radio then take off your dash speaker covers off and your defroster covers off you will see a bunch of bolts that hold on your dash under all them covers so go ahead and remove all the bolts then move down under the dash and there is a bolt on both corners of the dash that goes into the lower panel remove them I also removed the bolts the hold the steering wheel up so it can lower down alittle to give you more room then ontop of your gauge cluster you will see two screws that holds the gauge cover on remove them and in the cover you also have headlight switch and hazzered and rear defroster make sure you unplug the harnesses to them then you will have to start unhooking all the other plugs and wiring that plugs into things on dash then get the dash out oh the way and go under hood and remove heater core hoses and you will need a specal tool to remove ac line then you will see one bolt next to the heater core hoses so go ahead and remove that then back to inside you will see the brackets that hold on heater Assembly onto the car and go ahead and remove them and pull whole assembly out and you will see the heater core cover its held on with 4 screws so remove them and finally remove heater core and get some sealant to put around the new heater core this is a lot of work it took me about 12 hours to complete and get you a bucket because their is alot of nuts, bolts, clips so good luck

Jan 11, 2010 | 1989 Ford Mustang

1 Answer

Replacing heater core


  1. Allow engine to cool and release pressure from system, then disconnect heater hoses from heater core tubes, and plug hoses.
  2. Working in passenger compartment, remove glove compartment assembly.
  3. Remove seven screws attaching the heater core access cover to plenum chamber.
  4. Disconnect vacuum lines, then remove the cover with the vacuum harness attached
    1. Remove heater core from vehicle, Fig. 20.
    2. Reverse procedure to install.
If you would like the 1 pic that comes with Email me at my Nickname here @aol.com AND PLEASE HELP ME BY a Simple Click to RATE ME Have a GREAT WEEK & THANK YOU !!!!!!!

Jan 16, 2009 | 1990 Ford F150

3 Answers

Have the dash off but can't get to heater core on chevy s-10 blazer 1998


you have to start by taking the black covers off under the dash. And you should look under the hood to see where the heater hoses go into the fire wall. that is where the heater core is located under the dash!
When you start taking the black covers off under the dash, keep removing parts tword the core location. It will be located in an air duct sence air has to blow through it in order to blow out onto the vehicle.

Sep 27, 2008 | 2007 Chevrolet Blazer

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