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Old 03-06-2012, 11:51 PM   #1
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Question Hot & cold

I need some help ---- The temperature that is displayed on the control panel flashes and I get strong cold air on the passenger side, and weak warm air on the driver side when the heater is on, is the control panel going bad, or is it something else????
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Old 03-07-2012, 08:18 AM   #2
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Is this on a Automatic Climate Control system?
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Old 03-07-2012, 09:42 PM   #3
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Default Hot & cold

yes it is, I just now for the heck of it, looked in the owners manual and it says if the dislpay is flashing there is a problem with the climate control system and needs to see the dealer ---- cliff
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Old 03-08-2012, 11:33 PM   #4
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Sounds like a bad actuator motor they have a nylon gear that cracks and the blend door will not move. It is located behind the glove box little tricky to get to but doable. I did one on my 95 buick
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Old 03-09-2012, 04:34 PM   #5
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What year and make is this car? Older GM'* have vacuum controlled systems, newer ones electric. If you do need the control head you can usually get them on Ebay.
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Old 03-11-2012, 04:31 PM   #6
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Angry hot & cold

in order to get my heater to work, I have to turn on the control panel, hold the button for hot until it reaches 90 degrees, then hold the cold button until it reaches 60 degrees, then hold the hot button until I get the desired temperature, when I do that I can get the air to the vents and the floor as desired, this is very strange indeed ----- cliff
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Old 03-11-2012, 04:34 PM   #7
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this is for the reply I got from 2kg4u,----- it is a 1999 buick limited
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Old 12-10-2012, 07:24 PM   #8
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Hey Cliff,
I just figured out the same thing in my 99..up to 90 down to 60.......up to whatever you want it to be. Did you ever get her working???????.--------------------------------------------------------------------------------
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Old 12-10-2012, 09:53 PM   #9
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Sounds like you need a new HVAC control head.
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Old 02-17-2013, 09:16 PM   #10
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turned out to be the heater actuator
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