Welcome to the forums. There is the center console control panel, the radio touchscreen controls and the BCM all involved in HVAC functions.
Do the touchscreen controls respond?
You may need a scan tool to diagnose and find fault codes in the various control modules.
thanks for answering!! Yes, my sound system gps etc works correctly except the climate system, I already used my scanner and there is no error or code,i have no check engine light on! And in my central panel all my buttons work except the climate buttons
The 'ck eng' light and PCM probably aren't involved with the HVAC controls and the HVAC wouldn't set OBDII fault codes.
You need a scan tool that can read and interrogate 'body control and HVAC' modules.
If a logic error has occurred, you might try disconnecting and then reconnecting the battery terminal to reset things?