So, this is a big job, you will need to disconnect the battery and drain the coolant out, (engine cold). Then the dashboard will need to be removed/loosened and moved upward and out of the way so you can access the HVAC plenum, also the AC system will need to be vacuumed down and well. Remove the heater hoses and AC lines, then unbolt he dash mounts and steering column mounts to help get he dash out of the way, then unbolt the HVAC plenum mounting bolts to help get at the heater code which is inside of the heater box.
This guide goes over the generic steps so you can get an idea of how the job is done
https://www.2carpros.com/articles/replace-heater-core
Transfer any seals or insulation to the new core, install the new heater core into the HVAC housing, and reinstall the cover. If you have any troubles please upload a short video or an image so I can help walk you through the repair. Check out the images (below). Ken
Images (Click to make bigger)
Friday, March 6th, 2026 AT 9:01 AM
