Question about 1989 Buick LeSabre

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I am trying to replace the heater core is it inside the car or in engine compartment?

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The heater cores on this are replaced from under the hood.i believe the heater hoses connect to the heater core on top of the heater box under the hood.there should be a plate on this box with several screws(bolts),that hold it on that needs to be removed to get to the heater core itself.you may have to remove weather stripping to get to the bolts.there is a holding bracket that holds the heater core to the inside of the box that has to be removed to pull the core out.

Posted on Apr 11, 2011

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Related Questions:

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

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Heater core


2.3l, 4 cyl.
If you need to replace the heater core it's really easy. Maybe 30 mins if you know what your doing. Remove the hoses (truck cold) from the heater core in the engine compartment (reclaim excess coolant that comes out). Remove screws from the passenger compartment fire wall area (inside), remove and reinstall heather core. Replace lost coolant. It's that simple.

on Jun 27, 2008 | 1988 Ford Ranger

1 Answer

Need to know where my Heater Core hoses hook up to on the engine? I see the Hoses but is there a seperate part that the hose connects to?


The best way to locate a heater core hose is to determine where the heater core is located. Many vehicles have the heater core inside the dash. Other vehicles, usually larger vans and trucks, will have a heater core box inside the engine compartment. Once you have determined where the heater core is located in your vehicle, that will allow you to easily locate a heater core hose. If the heater core is inside the dash, you'll need to examine the firewall for the hoses. If it is in a heater box, you'll need to look around the engine compartment for the box.




Heater cores located inside dashes can be very difficult and time consuming to replace. Depending on the layout of your engine compartment, it can also be difficult to locate a heater core hose. If there is very little clearance between the engine and the firewall, you may have difficulty finding the hoses. You might need to use a flashlight to look from the underside in some cases. You will typically be able to identify the heater hoses where they enter the firewall by looking for two two small diameter hoses that protrude into the engine compartment. You can then trace those hoses to their other ends, where they will typically connect to a thermostat housing, the radiator, or a t-connector.


Hope this helps.


know more about your car

Sep 12, 2012 | 1996 Lincoln Town Car

1 Answer

How do I best replace a heater core in a corsica 1995


You will have to drain all engine coolant.Disconnect your battery and your two heater core hoses that are on the fire wall in the engine compartment.Now inside the car start removing your dash.one dash is removed you will have to open you heater box to gain access to the heater core once you have gain access remove and replace.Now start replacing heater boxes dash board and reconnect heater core hoses and reconnect battery.Now top up your engine cooling system with the engine antifreeze drained you should have a extra jug of coolant in case you spilled or just needed it to top up.Now start car make sure coolant is full when cooling fans come on put rad cap on you have completed the replacement of your heater core.

Dec 27, 2010 | 1995 Chevrolet Corsica

1 Answer

Need to replace heater core


Very very big job. Only do this if you really really love your car. Here is the 100ft overview:

*Disconnect the heater hoses at the heater core inside the engine compartment. (recommend cutting the hoses and replacing with new ones)
*Disconnect the heater valve cable from the heater valve
*Remove dashboard (involves removing steering wheel/column, radio, glove comp, etc)
*Remove the heater assembly (big black plastic box behind the radio)

The core is inside the heater assembly.

Again, this is a big job, and it will probably be very frustrating at times (I know from experience). If you do not have a repair manual for the car and you think you want to try this...get the manual first!

Dec 06, 2010 | 1992 Honda Accord

1 Answer

Replace heater core


    A heater core transfers heat from a 1994 Ford Ranger's engine to the passenger compartment by running hot radiator coolant through a serpentine of tubing. Air blows past the hot fins of the heater core and into the truck cab.

    The hoses running to and from the heater core must be removed from the engine compartment, but the core itself is accessed from inside the passenger compartment, on the driver's side next to the center console.

    1. Turn off the engine, open the hood and remove the battery cable from the negative terminal. Make sure the engine is cool.

    2. Attach a 3/8-inch interior diameter hose to the drain outlet on the bottom rear corner of the radiator on the driver's side, and place the bottom end in a resealable plastic container. Turn the drain valve (located above the drain outlet) counterclockwise with a pair of pliers. Drain the engine coolant into the resealable container, then close the valve by turning it clockwise. Remove the hose from the outlet.

    3. Loosen the hose clamps on the radiator hoses where they attach to the heater core on the firewall. Remove the hoses.

    4. Unscrew the screws holding the underdash cover in place on the driver's side of the passenger compartment. Remove the underdash cover.

    5. Unscrew the four screws on the cylindrical heater core access cover and remove it. Remove the heater core by pulling it down and toward the rear of the vehicle. Replace the unit with a new heater core.

    6. Reinstall the heater core access cover and screw in the retaining screws. Replace the underdash cover and screw it into place.

    7. Replace the radiator hoses on the heater core in the engine compartment. Tighten the hose clamps. Add coolant until the level is between the minimum and maximum marks on the reservoir.

    8. Replace the battery cable and start the engine. Check the system for leaks.

Dec 05, 2010 | 1994 Ford Ranger Supercab

1 Answer

I need to know how to replace the heater core, is it something i can handle or do i need to take it somewere?


usually not that hard on an older GM. locate approx location of heater core by looking for two matching size water lines that enter the passenger compartment thru the firewall from the engine compartment. go inside under dash and look for the heater core box. remove screw to open and expose the heater core

Sep 08, 2010 | 1993 Buick LeSabre

1 Answer

How do i change out heater core on '78 ford p.u w/o air cond


The heater core is located inside the passenger compartment behind the glove box. Remove the glove box liner by removing about 6 screws. Unscrew the heater core cover and you can then see the heater core. Inside the engine compartment you will be able to see where the two hoses connect to the heater core. Disconnect these and with a little wiggling, the heater core will come out.

Dec 08, 2009 | Ford F-100 Cars & Trucks

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

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

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