03 manual HVAC control head

[gmtech4]

i don't start many threads but i think i need to for info on this one..

 

today inspecting an 03 the HVAC control head was dead save the fan,so i hooked up the tech 2 and sure enough no comunication,no codes in BCM or PCM,

 

i checked the HVAC fuses(by removing them ) in the I/P and Under hood fuse blocks and they were good ,,

 

im thinkin WTF right and so i took out the HVAC control head to check the 2 power sourses and they were there and so i reconnect it and i hear the actuators self calibrating ....

 

dam if it didnt work like a charm,

 

so IDK WTF happened besides bad connection ,

 

so i thought id share ,weird eh?

[Jsdirt]

Must've scared the gremlins out of it ....