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I have a 2000 c5 with the dual hvac control unit. The system works well when it works. At times the control comes on , the pointers point to the
areas to be heated but the blower will not come on. tonight I made a seat adjustment and hit the memory 2 switch on the drivers door and the blower came on. What does the memory have to do with the hvac system? and btw the hvac control was not in the auto mode when I hit the memory button.
I have only had this car a few months and I have a lot to learn about all the different systems on this car