Heater core replacement

Hello,

You will need to drain the coolant first and disconnect the battery. Also you will need to vacuum down and then recharge the ac system when you are done. Here is a guide for that.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Here is a guide that will give you an idea of what you are in for when doing the job.

https://www.2carpros.com/articles/replace-heater-core

Here are some diagrams (below) of your car to help you get the job done

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

Take a look at the attached pic and let me know if it helps. It shows the entire unit in an exploded view. Hopefully, you can see something that needs removed.

Sounds like the heater core is leaking-you smelling the sweet odor

REMOVAL:
Disable the SIR system.
Disconnect the negative battery cable.
Properly drain the cooling system.
Raise and safely support the vehicle.
Detach the heater hoses from the heater core.
Carefully lower the vehicle.
Remove the instrument panel as instructed below:

REMOVAL OF INSTRUMENT PANEL:
Remove the instrument panel cluster trim plate.
Unfasten the screws from the top of the cluster, then pull the cluster rearward to remove.

INSTRUMENT CLUSTER MOUNTING

HEATER CORE AND RELATED COMPONENTS

INSTALLATION:
Position the heater core, then secure with the mounting clamps.
Attach the heater core cover.
Install the DERM with the attaching bracket.
Install the instrument panel.
Raise and safely support the vehicle.
Connect the heater hoses to the core.
Carefully lower the vehicle.
Properly refill the engine cooling system and check for leaks.
Enable the SIR system.
Connect the negative battery cable, then start the engine and check for proper system operation and/or leaks.

Here are the directions. Also, I have attached an exploded view of the system. I hope it helps.

Disable the SIR system.
Disconnect the negative battery cable.
Properly drain the cooling system.
Raise and safely support the vehicle.
Detach the heater hoses from the heater core.
Carefully lower the vehicle.
Remove the instrument panel. For details, please refer to the procedure located in Body & Trim of this guide.
Remove the DERM with the attaching bracket.
Detach the heater core cover.
Unfasten the heater core mounting clamps, then remove the heater core.

To install:

Position the heater core, then secure with the mounting clamps.
Attach the heater core cover.
Install the DERM with the attaching bracket.
Install the instrument panel
Raise and safely support the vehicle.
Connect the heater hoses to the core.
Carefully lower the vehicle.
Properly refill the engine cooling system and check for leaks.
Enable the SIR system.
Connect the negative battery cable, then start the engine and check for proper system operation and/or leaks.

This is the only exploded view picture I could find of the system. I hope it helps. It shows the entire system.

First need to remove instrument panel to be able to remove HVAC unit BIG job can download Mitchell from this site for instructions

Use the car repair manual link in this thread, or get a Haynes manual.

Generally you will have to remove a portion of the interior dash to get the the heater core, after draining coolant, remove old core and replace it with new core, tighten down coolant hoses.

HEATER CORE REPLACEMENT

REMOVAL PROCEDURE

Remove the HVAC module. See: Housing Assembly HVAC Service and Repair
Turn the HVAC module over.
Remove the heater core case cover screws and cover.
Remove the heater core bracket screws and brackets.
Remove the heater core.