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Ok, ill.try it out and see

Would air in the system cause the temp to show normal while hoses are still cold

Hello I have a heat issue on s 2011 with 3.8l. Last year I flushed heater core and got heat again. But now it just blows completely cold. Things I've noticed is the hvac controls sometimes flash on defroster button and takes awhile to kick on, secondly the temp gauge shows normal temp before...