Cadillac Repair: cadillac codes, cadillac seville, climate control

Question
QUESTION: i have a 1996 cadillac seville sts, i checked the code (via off and pass. warmer). How can i figure out what the codes mean. every where i have looked, i cannot find my codes. did i do someething wrong? here are the codes i recieved:  

PCO135
PCO139
PCO300
PCO741
PCO1139
PCO1599
AC1340
AC1347

cant be good to have that many, i really want to figure this out. any help is very appreciated. thanks

ANSWER: The FIRST thing you want to do is CLEAR (erase) ALL the codes from the computers via the climate control panel and see if any codes return as HISTORY or CURRENT codes.  Let me know.

---------- FOLLOW-UP ----------

QUESTION: how do i clear the codes??? and does the "C" in these codes mean current. everywhere i look the codes read as PO135 not PCO135. why is mine showing the "C"?

Answer
It is NORMAL to show the "C". With so many codes and this website which is NOT mine, You will need  Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.