Audio Systems: audio turns on air conditioner unit, pioneer head unit, bass unit

Question
i have 2003 envoy .remove boze unit. replaced with pioneer head unit ,new speakers extra amp for bass unit in rear.when my stereo is turned up to a certain level it signals my heat/air unit to come on and start the temp control to run down to min 60 degrees no matter where it is set. disconnected bass unit, thought the sound had something to do with it ,but still did it.reinstalled with new cables that retured my door chimes ,which i had opted for cheaper cable at first,still did it.would adding a amp to my head unit allowing me not to have to urn it up to get same level help.stereo place thought level of head unit is causing a error to turn on cooling system.

Answer
using the cheap harness cause all this problems and there is more in the future if you don't reset the BCM  there is to ways to do this  
disconnect the battery for 12 hours if that don't work
you need a gm scan tool dealer only and to hours of labor fee
sorry i can not help you more bu there is no other way