93 Grand Am heater core

Geez, yet another message board puking all over Usenet. Here's how to do it. Buy a new one, a junkyard part will cost about as much and not be worth the effort.

It is under the dash. It is extremely difficult to replace.

Yeah, I just got rid of my old '86 Chevy Celebrity Eurosport rather than spend at least $300 to replace its heater core (even though I've spent about $600 on repairing the hood latch cable, window, and tune-up on its replacement, a '94 Grand Prix).