Question about 1989 Buick LeSabre

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WHERE IS THE HEATER CORE REMOVED FROM? ENGINE COMPARTMENT? OR INSIDE UDER DASH? I HAVE 2 REPAIR BOOKS - 1 SAYS ENGINE & ANOTHER SAY INSIDE

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Toosharp2004, The easiet way to find what you are looking for is to follow the heater hoses from the engine. If they go through the fire wall then the core is located inside but if they end up at a box in the engine compartment then this is where you will find it. Based on the year of your car I think that GM put them inside under the dash in the middle. Good luck with this.

Posted on Apr 11, 2011

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Replacing heater core on dodge dakota 2004


Removal & Installation

  1. Disconnect the battery negative cable.
  2. Remove the instrument panel from the vehicle.
  3. If equipped with air conditioning, recover the refrigerant.
  4. Disconnect the liquid line refrigerant line fitting from the evaporator inlet tube.
  5. Disconnect the accumulator inlet tube.
  6. Drain the cooling system.
  7. Disconnect the heater hoses from the heater core tubes.
  8. Remove the four nuts from the heater-A/C mounting studs on the engine compartment side of the dash panel.
  9. Remove the nut(s) that secure(s) the heater-A/C housing mounting brace to the stud(s) on the passenger compartment side of the dash board.
  10. Pull the housing rearward far enough for the mounting studs and evaporator condensate drain tube to clear the dash panel holes.
  11. Remove the housing from the vehicle.
  12. Lift the heater core out of the housing
Installation is the reverse of removal.


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Repair Guides Heater Core Removal Installation AutoZone com

Aug 18, 2017 | Dodge Cars & Trucks

1 Answer

Diagram for heater core replacement on 1986 elcamino


Best to get a repair manual. You will need to remove part or all of the dash, since the heater core is inside the car on the firewall. An Autoparts store would have a repair manual for your car. In The Meantime: 1. Disconnect the heater hoses, at the firewall in the engine compartment. 2. Connect the two hoses together using a piece of tubing and a couple of hose clamps. (This will bypass the heater core, until you can get it fixed.)

Jan 22, 2014 | 2000 Chevrolet Silverado

1 Answer

Whats a heater core and how much do they cost


The heater core is located inside the car's ventilation (interior fan) system. Looking inside the engine compartment, there should be two hoses (approx. 1 to 1.5" diameter) running from the water pump to the firewall between the engine compartment and cabin interior. They are attached to the heater core. The core itself is not terribly expensive, but removing and replacing it is labor-intensive i.e. dash may need to be removed to gain access. Good luck.

Sep 28, 2013 | 1998 Cadillac DeVille

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.

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Exploded view of a common heater core and case assembly



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



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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

1 Answer

Is the heater core on a 1981 bronco in the engine compartment or the cab compartment


in the cab, but procedures are different depending on whether or not you have A/C. See below

1980-81 Comfort Vent Heaters, Without Air Conditioning
  1. Disconnect the heater hoses from the heater core tubes and plug the hoses with suitable 5 / 8 inch; (16mm) plugs.
  2. Remove the glove compartment liner.
  3. Remove two (2) spring clips attaching the heater core cover to the plenum along the top edge of the heater core cover.
  4. Remove eight (8) screws attaching the heater core cover to the plenum and remove the cover.
  5. Remove the heater core from the plenum taking care not to spill coolant from the core.
To install:
  1. Install the heater core in the plenum.
  2. Install the heater core cover (eight (8) screws and two (2) spring clips along the top edge of the cover).
  3. Install the glove compartment liner.
  4. Connect the heater hoses to the heater core. Tighten the hose clamps.
  5. Add coolant to raise the coolant level to specification.
  6. Check the system for proper operation and for coolant leaks.

1980-81 Standard & High Output Heaters, Without Air Conditioning
  1. Disconnect the temperature cable from the temperature blend door and the mounting bracket on top of the heater case.
  2. Disconnect the wires from the blower motor resistor and the blower motor.
  3. Disconnect the heater hoses from the heater core and plug the hoses with suitable 5 / 8 inch; (16mm) plugs.
  4. Working under the instrument panel, remove two (2) nuts retaining the left end of the heater case and the right end of the plenum to the dash panel.
  5. In the engine compartment, remove one (1) screw attaching the top center of the heater case to the dash panel.
  6. Remove two (2) screws attaching the right end of the heater case to the dash panel, and remove the heater case from the vehicle.
  7. Remove nine (9) screws and one (1) bolt and nut attaching the heater housing plate to the heater case, and remove the heater housing plate.
  8. Remove three (3) screws attaching the heater core frame to the heater case and remove the frame.
  9. Remove the heater core and seal from the heater case.

To install:
  1. Position the heater core and seal in the heater case.
  2. Install the heater core frame (3 screws).
  3. Position the heater housing plate on the heater case and install the nine (9) screws and one (1) bolt and nut.
  4. Position the heater case to the dash panel and install the three (3) attaching screws.
  5. Working in the passenger compartment, install two (2) nuts to retain the heater case and plenum right end to the dash panel.
  6. Connect the heater hoses to the heater core. Tighten the hose clamps.
  7. Connect the wires to the blower motor resistor assembly.
  8. Connect the blower motor wires.
  9. Position (slide) the self-adjusting clip on the temperature cable to a position approximately one 1 inch; (25.4mm) from the cable end loop.
  10. Snap the temperature cable on the cable mounting bracket of the heater case. Then, position the self-adjusting clip on the door crank arm.
  11. Adjust the temperature cable.
  12. Check the system for proper operation.

Oct 05, 2010 | 1981 Ford Bronco

1 Answer

Heater core need information on replacing this drawing on removeal if possible


I dont have a pic but you may be able to find one on autozone.com.

1. remove the clamps from core tubes in engine compartment and remove.
2. remove dash panel from inside of car
3. loosen screws and remove strap(s)
4. remove your core and iNstall your new one.
DRAIN YOUR FLUID FIRST AND WATCH YOU DONT SPILL WHAT IS IN YOUR CORE ALL OVER YOUR FLOOR

Dec 14, 2009 | 1990 Buick Century

3 Answers

92 F150 heater core


Basically all you need to do is:
1. Remove Glove box
2. Disconnect several wiring harnesses while working towards the engine bay.
3. Remove plastic housing surrounding the Heater Core.
4. Make sure inlet/outlet hoses are disconnected from inside the engine bay.

That should get her to pop right out

Mar 24, 2009 | 1992 Ford F150 SuperCab

1 Answer

IM TRYING TO CHANGE MY HEATER CORE ON AN 01 S10. I HAVE THE DASH OUT BUT CAN'T FIGURE OUT HOW TO GET THE CASE OFF OF IT.


on the out side of cab under hood in engine compartment on the firewall there are 2 nuts that need to be removed and 1 by the heater fan motor. theres a little secret trap compartment in engine compartment by the ac unit and the heater core fan that has 3rd bolt. the box on the inside of cab will come lose.

Jan 09, 2009 | 1999 Chevrolet S-10 Pickup

4 Answers

Heater core


You have to pull the dash and all the lower fascia, then remove the box that houses the Heater Core Take the clamps off the heater hoses from the engine compartment side of the firewall and disconnect the heater hoses. Disconnect the bracket that holds the heater core in place from the inside of the passenger compartment (if present.) Carefully remove the heater core and discard it. Install a new heater core reversing the above steps.

Oct 18, 2008 | 1988 Chevrolet Cavalier Z24

1 Answer

Dodge ram 2500 1999 heter core need to be reaplace


I have a 2000 1500, but from what I can see it is the same fix. You need to pull dash forward. 2 bolts behind kick panels one on either side. Screws along top windshield I believe there are 6. Detach steering shaft. (lay down on drivers side facing up. 2 bolts hold in place) This should allow entire dash to tilt towards seats. Heater core is passenger side. You will see 2 metal lines going through firewall. This is your heater core lines. Detach these from rubber hoses inside engine compartment.

Here's where you can follow the book, or do it the easy way... The book says you need to remove the ENTIRE dash and discharge A/C unit before removing.... I have a way better fix.

With a hacksaw cut the metal lines off the top of the heater core (its already junk so don't worry). Pull up on heater core to remove. Now the tricky part. With the hacksaw, cut through the plastic housing. Start far right and cut down until you meet the natural break in the 2 pieces of plastic. Now start another cut on the far left of the housing and again cut straight down. You are creating a door for the new heater core to install. ***Save this piece of plastic housing as you will need it***.

Install new heater core and then use JB Weld to fasten "door" back into place. This should save you about $300 and hours of time. Have fun...

Oct 18, 2008 | 1988 Dodge D-Series Pickups

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