Originally Posted by fiercestlion
I've got an 88 sable that i'm replacing the heater core on. i am trying to remove the ac lines with the quick disconnect tool but it won't budge at all, any suggestions would really help thanks
If you're using the correct tool, then your lines must be frozen on. Try spraying rust penetrant into the fitting. If this doesn't work, then you'll need to cut the fitting and replace the line and possibly the evaporator.