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Heater stuck on wont switch - 2002 GMC Envoy

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check all your fuses and fusable links, also check the body computor

Apr 12, 2014 | 1999 Plymouth Voyager

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Heater will not switch to defrost stuck on 1 position

when the heater controls are stuck on one setting it could be the foam on your mode door valve so it wont properly switch causing it to only be on one setting. or its the mode door actuator but the major problem is the foam on the door it self there is a seal kit you can get to fix the problem p/n 89018656 but you have to take some of your dash apart to get to it its not to bad if you just have to replace the foam. an 8 hour job or so if you have to replace the whole actuator

Feb 12, 2013 | 1997 Pontiac Sunfire

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I can't get the air to switch from heater to air conditioning

check the mechanism of the vents, it could be stuck or not working.

Feb 08, 2013 | 1998 Mercedes-Benz M-Class

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My 99 dodge intrepid heater control stays blowing and wont light up and wont stop blowing unless i pull the fuse and nonew of the controls work

Are the different speeds working on the blower or is this stuck on just one speed ??? It seem as if the relay for the blower is fused together in the on position an can no longer be controlled by the switch. If this blower is not a relay controlled unit then most likely the blower switch is no longer working.

Aug 24, 2012 | 1999 Dodge Intrepid

1 Answer

My vent is stuck on floor position and heater control assembly wont switch to dash were do i start to fix problem on 83 cutlass supreme

The thing to do is check for vacuum leaks. In the engine bay look for any "hoses" coming from the firewall. These are for the heater contols. If any of these are broke? Replace them . Have you installed a after market radio? Sometimes heater controlls get messed up. I would take the radio out and examine the heater controlls.

Jan 10, 2011 | 1983 Oldsmobile Cutlass Supreme

2 Answers

My heater wont get hot blows but its cold air

could be your heater cor or just low on fluid if the truck over heats as well could be your thermostat stuck closed if does not over heat could be stuck open

Dec 14, 2010 | 2002 Ford F150 Regular Cab

1 Answer

My heater is stuck on defrost. I switched the

look under the hood on the passenger side for a broken vacuum line. this is usually a white plastic or black plastic tube. you can splice it together with a small rubber vacuum hose.

Feb 10, 2010 | 1995 Ford Econoline

2 Answers

No heat in car blower works,thermostat was changed coolant level good car runs hot

problem could be in the mode switch + check fuse to heater and ac mode switch.if blown your air door wont open and let heat enter inside car.if fuse look good you could have faulty mode switch.if you have climate control if you have a bad in vechicle sensor that will effect air door to open let heat in.this problem would be best for dealership.if dealing with climate control need a quick fix.too cold outside not to have heat in car.

Dec 14, 2009 | 2003 Nissan Altima

2 Answers

1998 for taurus heater wont blow hot air only cold .was driving down the road I TURNED THE HEATER OFF FOR A COUPLE MINUTES WHEN I TURNED IT BACK ON IT WOULD ONLY BLOW COLD AIR.IT IS ELECTRONIC SWITCH'S.THE...

you need to check the blend door in the heater box it maybe broken or stuck.the blend door switches between the heater core and ac evaporator to provide a mix of temperature

Oct 18, 2009 | 1998 Ford Taurus

1 Answer

Blower wont turn off

If you turn the key off and it wont shut off the heater then there are some interesting things you need to check. The first would be the whole ignition switch. When you shut off the key, the power should stop to that accessory. If that is okay then you need to check the controls for the heater. The issue with no heat is one of a blend door being stuck and this could be the controls again.

Aug 19, 2017 | 1991 Honda Accord

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