How do you change the heater core in a 1994 chevy lumina van?

is there a spot right under the dash or do you have to take out the dash?How do you change the heater core in a 1994 chevy lumina van?You don`t. Unless you have a lot of time and a lot of patience. Here is a link to the autozone site for doing it , complete with pictures, just click on them to expand them. Good luck and have funHow do you change the heater core in a 1994 chevy lumina van?First pack a lunch take your vitamins this is not going to be easy actualy maybe on a van it might be easier you probably going to have to take out everything that is in the way it gets very compact ,thats as far as i want to go sorry.