Removing heater core 61 Lesabre

OK, this one has me stumped. Everything unbolted under hood and under dash. Service manual says remove adaptor plate to floor vent. Then pull heater away from dash.

OK so I cannot remove the adaptor.

Can't lift heater up, adaptor will not budge in any direction.

Is there a trick to doing this or is it siliconed to the floor and I just need to apply some elbow grease

 

OK for future reference. You have to pull the entire front carpet out, then unbolt the heater duct that is bolted to the floor that goes under the front seats to the rear seats. Once that is removed the adapter comes away now you can remove the heater box.

 

Wow!

 

Sounds like a lot of work Chris. How long did it take you?

 

Chris, actually not too long if you go in eyes open. I had to sleep on it and have a second crack next day. But uninterrupted it would take roughly 2-3 hours. Got to pull the airbox stuff from the fireawall which is 5 bolts, 2 electrical wires and one control cable. All easily accessible. Then under the dash inside the car, one screw of the heater box, 2 control cables. All again easily accessible and easy to remove. But then pull the carpet. So kick panels, sill plates, remove front carpet. That probably was the longest bit to do. Then unbolt rear seat heat vent panel. This has roughly 10 bolts to unscrew from floor. You don't need to remove front seat. Once done, it comes out, adapter that connects that vent to heater comes out, then heater box just lifts out.

To pull heater box apart it's unscrewing about 12 very small screws and done.

So with prep and focus the whole thing can be apart in under 2 hours. Just annoying you need to pull the entire front of the car apart.

Worse, you know it's my daily driver and it's coming into winter here. So I had to make a block off plate for the half a foot sized hole in the firewall now. It's not completely sealed, so I'm rugging up while driving now.

My issue now is I have someone that can recore the heater but not the control valve locally here in Oz. I've found some on line but they want drug money for them, so looking if I could actually rebuild the existing control value. It's not pretty

 

Thanks Chris, that is very helpful!