Help Changing Heater Core
 

Hello, I am new to the site but hope I can get some helpful information. I have a 1988 Cutlass Ciera XC Special Edition in which the heater core needs to be replaced. I have A/C in the car and it works excellent right now. If I change the Heater core will it affect my A/C? Also, is there any special way for me to change it?

Thank you for the help!