Is it possible to change heater core without disconnecting AC?

 

you have to pull out the entire dash, we usually suggest you change the heater core and the evap core (part of the AC) at the same time just so you dont have to open the dash up again later on, but iv never done it so im not sure if you HAVE TO disconnect the AC, but i would imagine yes

 

yes you have to disconnect the evap to get the heater box off of the firewall.

 

Thanks yall!