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hey guys my 09 g8 gt has a weird issue, just wondering if anyone else had this problem the top row of the climate control buttons are not working, I.E. the fan speed will turn down but not up, cannot use the top button to turn on the rear difrosters, but the bottom row of buttons works fine i can change the location and the temp any suggertions?
 

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This is another first for me, with the loss of an entire row of push controls. I suppose one option would be to remove the front radio fascia, and verify the condition of the pins an sockets of the 2 components. If OK, re-seat the fascia an give it another try. The other thought would be that something may have failed within the HVAC control module, or maybe one or more of its connectors is not seated correctly. Tough system to T/S due to commands happening thru the data bus circuit. If any type of fault has been logged, it might be the type that requires one of the GM tech scanners to find.
 
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