Hello everyone,

So my heater core is leaking and I have no clue as to where it is and how to get to it / replace it. I've searched through the threads and ran some searches but couldn't find anything pertaining to the process. I would be grateful to any advice, tips, how tos or links pertaining to getting to and fixing / replacing the H.C. (99 grand prix gtp)

Thanks


p.s. The diagnosis came from my neighbor who is a retired GM mechanic. He is pretty sure how to do it but he asked me to try and find out anything I can about the location and the process.