Question about 2002 Cadillac Deville

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Air or heat will not switch from lower to upper dash vents

Air or heat will not switch from lower to dash level,when mode switch is changed, can hear the deflector clicking somewhere behind dash. On rare occasions it will switch while driving, if the the mode is on upper,but will go back to floor vents when stopping engine. Where is this deflector and how does one get to it.

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My actuators are going out one by one, they started by getting stuck so I could look under the dash and my husband would change setting so i could see which one was clicking and i would manually move it to get it unstuck

Posted on Dec 14, 2017

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You might have a vacuum leak ,a broken or loose vacuum hose to one of the actuatores that open and close the vents

Posted on Dec 08, 2017

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Posted on Jan 02, 2017

  • 116 Answers

SOURCE: a/c blows from floor

sounds like two problems. the ticking sound is probably a broken blend door stop. the wet floor is probably a bad heater core, both require dash removal.

Posted on May 20, 2009

ghassun
  • 499 Answers

SOURCE: Yesterday the AC air stopped coming from the upper

try to check if the vanes works well also try to check the A/C filter

Posted on Jun 15, 2009

cadman000
  • 607 Answers

SOURCE: Air is blowing out of defroster and floor but not main dash vents

Check for vacuum hose leak.

Posted on Jun 17, 2009

  • 1 Answer

SOURCE: air cond warm coming out of driver side dash,warm passenger side

you want me to post a free solution yet want to charge for info I requested for free?

Posted on Jun 19, 2009

kevinj650
  • 82 Answers

SOURCE: A/C will not always come out dash vents, clicks,

Sounds like vacuum solenoid Divertor control or Vacuum leaks.

Posted on Jul 09, 2009

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2 Answers

Heat not working; my blower comes on but its not hot air, any ideas?


The temperature blend door is stuck on the A/C side ! Do you hear a clicking noise behind the dash ? Has an electrical controlled actuator that switches a door inside heater - A/C box from A/C to Heat . So the blower is blowing air over the A/C evaporator core all the time , not switching !

Oct 16, 2015 | 2003 GMC Yukon Denali

1 Answer

My ac on my 1998 oldsmobile 88 won't blow out the be-level what could it be


I believe you mean "BI-LEVEL" mode, which means it should blow air simultaneously out of the dashboard registers and the lower register. The Temperature of the air blowing out of both of them is regulated by the temperature preset.
Does the fan still blow when you move the switch to BI-LEVEL? If it does but the air comes out of the DEFROST registers, that means your diverter is not functioning correctly, most likely due to a vacuum leak under the dash. If the fan shuts off in BI-LEVEL mode but still operates in HEAT mode, your selector module is bad. If the fan shuts off in BI-LEVEL mode and in HEAT mode, either your engine coolant is not hot enough to provide heat (automatic function), or the temperature sensor for your climate control system has failed.

Jul 19, 2014 | Cars & Trucks

1 Answer

2000 grand caravan blow cold on floor vent but not dash vents


This sounds a lot like a door actuator it is locate behind the radio part od the dash when you switch the vents like to the floor upper dash do you hear a clicking sound? put your ear to the middle of the dash where the switch to the heat / cool is and listen for the clicking sound when you change the vents direction. If you do it's the vent actuator you will have to remove the face part of the vent and it's in behind that it is usually a white plastic box it may be black but most are white. The cost is about 90 to 120 Canadian dollars.
Hope this helps good luck.

Jun 30, 2014 | 2000 Dodge Caravan

1 Answer

1996 Honda accord cabin air temperature control switch won't turn to full cool mode sticking somewhere ac is cool not cold because heat is still coming threw where is the air flap sticking in the air box...


air control heat knob needs removing to determine if its the knob itself, this will just pull off, look at reverse of knod and look to see if the center locating pigot is worn "round" or broken , if this looks ok then the panel housing the knob controls will need removing and then check if the heat control wire is in place, if so trace this wire ,this is a bare steel control wire not an electrical the wire, to the heater box lower dash behind the control panel and see if you can manually move the heat control flap this will look like two toothed semi circular cogs that inter lock , one may have jumped out of place try a little vaseline on the cogs to help lubricate the movement,this is just good practice, after all this i think you will have found the problem.

May 04, 2014 | Cars & Trucks

1 Answer

2001lexusrx300 blowingcold air when heat is on no leaks not low on fluid can,t find any blown fusesunder hood


Its probably going to be your actuator for the door that switches between hot and cold, if there are no other problems. Its behind the dash somewhere in the middle of the firewall, probably, usually sits about knee level.

Nov 25, 2013 | 2003 Dodge Durango

1 Answer

When i turn the heat on cold air blows out of the heater vents


MODE DOOR NOT SWITCHING FROM AIR TO HEAT IT'S UNDER THE DASH THERE ARE TWO 1 THAT WORKS THE VENTS ONE THAT WORKS THE DOOR FOR THE HEAT AN AIR IF VENTS CHANGE FROM DEFROST TO DASH AN TO FLOOR IT IS THE MODE DOOR actuator

Nov 19, 2013 | 1994 Buick LeSabre

1 Answer

No heat


Is the coolant level full? What does the temp gauge read on the dash? Can you hear a difference in air flow out the vents if you switch from full hot to full cold?

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Dec 30, 2012 | 2005 Hyundai Accent

1 Answer

Ac vents not working


There is a blend door acuator which moves when u change your settings. Its a electric motor. Down under dash, Will need a mech and a heating and cooling diagram to find where the motor is,

Jun 13, 2012 | 2007 Ford Sport Trac Limited

2 Answers

I cant get any heat from dashboard only cool air ,could it be my thermostat or heater core


Well, yes, thermostat or heater core could be at issue, but unlikely without some other symptoms, like overheating. First I would look at your coolant level and then check to see if you have any water valves that close the flow to the heater.

Dec 23, 2010 | 1993 Dodge Caravan

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