Flashing Climate Control Unit, no heat - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-15-2015, 08:24 PM   #1
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Default Flashing Climate Control Unit, no heat

So i removed the battery once and when i hooked it back up, the temperature gauge flashes shortly after start up, and I get cold air and AC fine, but no heat. I will note that regardless the set temp, upon start up i get warm air then goes straight to cold. so i know the modulator gate works because sometimes it will actually give heat, but when i shut off the car and back up it doesnt stay hot. Also the fan speed wouldnt work sometimes then I play with the buttons and usually hitting AUTO the fan speed works. also recirc hasnt worked in a while. is my climate control broke? can i fix it some how? i even had it go through 50 cycles and that
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