Replacing the heater core is an involved process. It requires partial disassembly of the dashboard. Because it's involved, I recommend purchasing a repair manual for the vehicle. It will provide step by step instructions and pictures to help identify parts.
There is too much room for error for me to explain it like this. Sorry However, if you run into trouble, let me know and I'll do the best I can to help.
Wednesday, December 24th, 2008 AT 6:39 PM