no ac only heat

i need some advice.i have a 1994 pontiac bonneville 3.8 non supercharger. the car has over 190, 000 miles on it. ok i just had the heater core replace in the back in november. i when tried to cut the ac on it on blew out hot air like the heat is on. i thought that the ac would need recharging. so i had it recharged. the compressor is clicking on but it blow hot air out. it is not lukewarm air. i am puzzeled to what could be the problem. also when i am driving and set the temp gauge to the blue instea of the red you canh feel hot air underneath the dash like the heat is on when it is not on.

It could possibly be a vacuum hose being left off or a divertor door not being operated,have the person that replaced the heater core to check it out and then let us know,good luck

ok. thanks.

also try these guys..their the best for free also.....
http://www.bonnevilleclub.com/forum/viewforum.php?f=9&sid=97c7db0aab5aaa1aaafe2f200983a664

and mybe this will help too, same problem.......http://www.bonnevilleclub.com/forum/viewtopic.php?t=55906&highlight=blowing+hot+air