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Buick Regal 2000 Heater Control Panel

My heater/ac control panel isn't working correctly. It kind of has a mind of it own so to speak. When the car first starts, it works fine, but when I try to change something is when the stuff hits the fan. The buttons won't respond to being pushed. When I hit the defrost button, i have to hold it in until it turns on (by the way, the display doesn't show up either). Sometimes it works, sometimes it doesn't. It won't go lower then 90degrees when actually on. I have read that it could be some soldering issues. Any ideas?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: heater control wont heat. AC and fan works fine

The heater core was plugged and took 8 flushes to clean it . Would clean it would stop again. Have heat now .
Thank you everyone for helping.

Posted on Sep 20, 2008

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roniecon
  • 6826 Answers

SOURCE: 2000 Buick Regal

Check plug in on ignition switch,and if it is good ,replace the switch.

Posted on Aug 07, 2009

  • 192 Answers

SOURCE: I have numerous proglems.

Your rear turn signal flashes fast because the front is not working. Most likely you have a burnt out bulb in the front. If your A/C compressor can be turned over by hand and doesn't lock up or make any clanking sounds it's probably alright. The compressor will not run if the system is low on refrigerant. If you're having problems with the A/C and heater controls, that would be the first ting to repair. It doesn't sound at all like any electrical problems.

Posted on Jul 20, 2011

  • 51 Answers

SOURCE: 02 cavalier AC fuse keeps blowing

ac clutch is going out

Posted on Sep 04, 2012

pcdj64
  • 1150 Answers

SOURCE: My heater/ac fan sometimes won't work. What do I check first?

$24the AC light does not light until you turn the fan on, that is ok, the issue with your fan only working sometimes is more than likely a faulty blower motor, in some cases it is the switch, when the motor does not turn on try tapping it and see if that makes it work, if it does then it is the motor.
the switch at autozone is part number SW295 and is $16
the motor at autozone with the blower wheel is part number PM136
cost is $24

Posted on Sep 30, 2012

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So your control is not good it dont turn the vents to you

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There should be a 30amp HVAC fuse in the fuse box in the passenger compartment. The location should be in your owners manual.
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If you are getting heat inside the car, the defroster should also work. There is a control switch problem that doesn't switch to defrost from heat, or the compressor for the air conditioner is not functioning...it provides heat for defrosting as very dry air to the heater box.

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I wonder if that link is not snapped onto the white plastic connector that's a part of the door inside the heater box. It's a press fit just push it in. Take off the sound deadener panel under the passenger dash and look up. You'll see a vertical box at the right like a large paperback book sitting at an angle to the heater box with a metal rod about 5 inches long extending left toward the heater box. It should be snapped onto a nylon connector.


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Here's a list of possible culprits:

Priority Action Part Type Cause
1 Inspect - Antifreeze Needed - Coolant Level Low.
2 Inspect - Heater Control Valve - Leaking or Faulty Heater Control Valve.
3 Inspect - Thermostat - Thermostat Stuck Open.

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Since your blower works, my nominee for the offending part would be the Heater Control Valve, which redirects hot coolant into the passenger compartment heater core. Without hot coolant, the blower will just blow cold air, since the heater core isn't getting the needed flow of hot coolant through it.
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The Right hand Temperature Valve Actuator is AC Delco part #15-72971.
The Left hand Temperature Valve Actuator is AC Delco part #15-72972.
Their pictures are available in the online AC Delco Parts Catalog at:
http://parts-catalog.acdelco.com/catalog/catalog_search.php
Here are your parts search parameters:
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there is a light behind the control panel. You need to find it and replace it.

Feb 22, 2009 | 2000 Buick Regal

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