Gmc - Envoyxl :: No Heat Or Air Conditioning Coming Out Of Overhead Vents
Dec 31, 2011
I have a 2003 GMC Envoy XL. There isn't any heat or air conditioning coming out of the overhead vents. My mechanic tells me it is a control head module. I would like to try and fix this myself. I don't know where this module is located on the vehicle. It seems I could just remove the defective one and replace it with a new part. Are these modules easy to find in part stores and how expensive is this part?
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My 1999 F 250 5.4 liter. I know I have a vacuum leak because whenever I accelerate the air conditioning coming from the vents switches to the defroster. So my question is how do I go about finding the leak? My hubs in the front are manual so I know I don't have lines going up there. I do have some mechanical capabilities I've changed water pumps alternators brakes etc. But never anything with vacuum lines or a/c.
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Recently I noticed that I still have hot air coming through the vents with the climate control system completely off. I can tell that the fan is off because it's not blowing through the vents but the vents are very hot.
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The other morning I started my car up and no heat or air would come out of my vents. The night before I had to drive through a blizzard and my car was completely packed with snow. The climate controls function normally, everything is lighting up when i select a button, but no air is coming out of the vents (rear defrost and seat warmers work fine). There is no sound of the blower starting when I turn the air on, hot or cold. I live in Northeast Ohio so we currently have several inches of snow and it's well below freezing outside. I live in an apartment so my car is outside 24/7 between being here and at work. I looked up a bunch of posts on here and other websites to try to figure it out. I ended up taking my cabin filter out and it is completely packed with snow. So i vacuumed out the snow that was left in the cabin filter housing as far as i could reach. I also unpacked as much snow as possible from wheel wells seeing as the HVAC vent goes to there, and the blower still doesn't work.
What I am guessing, which I could be completely wrong, is that the HVAC vent is completely packed with snow and it's not letting the blower turn. I guess my question is does that seem remotely possible or is it something else completely? My climate control doesn't work on the highest setting so I don't think its the relay I read about and my heater has been working fine with no noises or anything and I don't believe it would just go bad out of the blue.
2012 Passat SE 2.5
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Snap, crackle and pop sound coming from the vents in the front and rear when the heat is on. It sounds like rice krispies with milk.
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The vents in my 2002 Prius are starting to become problematic. When I turn on the heat, the air is not coming out. When I hit the glove compartment, the air starts to come out, but it is very low and stops after a minute or two. I just want to know if the blower motor is dying, and how to replace it, if it is really the blower.
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I have a 1999 Dodge Durango SLT 5.2L (318) 4x4. My problem is that there is no air or heat coming from any of my vents. It started out where there was no air coming out on the lowest setting. Then a few days later, no air from the next highest setting. It then continued to where absolutely no air coming from any setting. I don't know where to even start looking.
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I have a 2006 Azera Limited and I am not getting any heat coming out of the passenger side vents. It will blow cold air so I know the blower motor is working and pumping out cold air, and I am getting heat on the drivers side just fine. With the cold weather now settling into Ohio, I wanna jump on this issue before it becomes a bigger problem.
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2003 Civic, ~180,000 miles. Previously had overheat problems, replaced head gasket, timing belt, water pump, thermostat and hoses (+ a few other things) No longer over heating, but there is no heat coming from the vents unless the car is over 2,000 rpm. Hoses to the heater core are both warm/hot, so flow through heater core seems to be good. Also AC has same issue no cold air unless over 2,000 rpm. Is this the control to the blend door? Are they operated by vacuum and with a leak, need higher vacuum to operate?
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I have a 86 f250 with rebuilt 302, new radiator, new hoses and heater core. I know the cold to hot selector works to open the door. now the ac works great although my heat is not working properly. I can put the defroster on with heat and the blower in the engine compartment comes on like normal. Now the problem is that we i put it on heat the blower in the cab does not blow air through any vents. I just purchased this vehicle and not really sure how everything works.
Funny thing also when the ac is on i turn the blower on low and its really high then the high is really low (its like to switch is working backwards) not sure if that has anything to do with it. Then when I was looking in the engine compartment i noticed the wiring harness has a plug going to the blower, then one plug to what looks like a heat strip of some sort, then someone took two oranges wires and wire nutted together to get the engine compartment blower to work. So now I'm wondering if I am missing something there??? Here's a pic of the engine compartment.......
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I just picked up a 78 F150 Ranger XLT with a 351M in it this past friday. I am absolutely in LOVE with her. She is a great solid truck. One issue I am having though is that she blows hot air out the vents over the hump but nothing is coming out the top of the dash. I am guessing that i will have to take the dash off and clean out the box check the door etc. What did you do to rectify?
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My 2001.5 Passat traditionally does not start easily when it is less than 6degrees outside. Today it was that cold..it started easily..but about 30 minutes into my drive to work..I realized it was a little smoky and exhaustish smelling in the car..once I realized it wasn't the car next to me..i realized if I turned off the heat..the smell went away..but at the stoplight..i could see smoke coming from under the hood..out the corner by the passenger/dashboard... Car has 80,000, recent oil change, what it is?
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About mid-October I noticed when it as real cold out and I had the heat running whenever I would come to a stop I noticed there is very little to no heat coming from the vents, despite the engine being warm and running at operating temps. At the time I was working for a shop and I asked one of the mechanics what the problem was. He said that it was the radiator not having enough coolant.
Turns out when we pulled the cap the coolant res, was just about bone dry. So we added in about a gallon or so of coolant with the truck running and sure enough at idle the heat was back.
Fast forward to the last couple of weeks and when I am sitting at idle again same thing happens. So somehow the engine is losing coolant. Its not ending up in the oil (no white on the dipstick) and there is not a coolant leak. As it sits there is 255,300 miles on the truck now. 1999 5.4L F150....
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I noticed a couple weeks ago after starting the truck and turning on the a/c that nothing was coming out of the vents. I found it odd when after driving a few miles the a/c kicked in and started blowing cold air. Today I needed to put on the defrost and same thing, nothing came out of the vents. I drove around for a while hoping it would kick in just like the a/c did but nothing. I did check the fuses and relay. When you turn the control either to heat or a/c you can hear a clicking sound under the hood. It's trying to engage but nothing is coming out of the vents.
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Air Conditioning issues, vents 'hiss' when the A/C is on ... So we just bought an 04 B5.5V TDI and when we were test driving the car, I didn't actually notice this issue since we didn't do extensive driving and I wasn't listening for this problem specifically.
So basically what I found after the purchase is that the a/c is not very strong at all... even full bore and the vents have a hiss, hissing, whine, moan coming from them.
The minimal troubleshooting I have done was just to try to determine, while at idle from inside the car... when the noise was happening. What I have come up with is this.
If the AC switch is off, I can turn the fan on to any speed and the noise will not present itself.
If the AC switch is on, going from fan stopped to speed 1, about 70% of the time the hissing will not present.
If the AC switch is on, going to any of the faster fan speeds (2+) and center vents begin to hiss at me.
Once the hissing is happening, turning the fan speed back 1 will not stop the hissing.
The hissing slows and stops when the fan is turned off or the AC switch is turned off.
The hissing does not sound like a fan rubbing. Its not quite a mechanical sound like a bad bearing or debris hitting the fan.
The hissing sounds a little bit like someone blowing through a straw. However, the fan seems to move up and down the speed range just as expected and the air output seems to match the speed... so its not like the air movement is low.
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I have a 2004 Kia Spectra (it is actually a 04/05 split year that generally takes the 05 parts) and when we turn on the car, sometimes the air conditioning/heat doesn't work. I can feel a little cold/warm coming out, but when I turn it higher nothing blows out at all. I can sometimes get it to work properly after driving for like 5 minutes on the highway with the radio off. Other times it turns on right away, but if I stop at the store and turn off the car, the next time it will stop working. What could be causing this?
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My uncles 99 f150 is acting a little strange. When he steps on the gas, the air conditioning comes out of the defroster vents. What's going on?
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I enjoy your show and newspaper column. Here's my situation. I have a 2008 Grand Prix with a stinky problem. There's a terrible musty, moldy smell that comes out of my vents (any vents, i.e. dashboard, floor, defrost) after I shut off my air conditioning. When just the fresh air from outside is coming through the vents, everything is just fine. When I turn on my air conditioning, everything is just fine. When I turn off my air conditioning is when the funky smell starts.
Mechanic number one cleaned out the drain hole, sprayed anti-mold spray and foam through the air intake vents with the recirculation switch on and the windows rolled up. But the mold is still there. Mechanic number two shared with me that the only way to get the mold out is to disassemble part of the A/C unit, physically clean out and disinfect the unit and then add some other part that drain or dry the unit so moisture never sits in there and starts the molding process. Is that the best way to deal with this problem?
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So I got in my truck yesterday and i started it like normal and turned air on. The air will not blow out of the vents but only the defrost vents. I have checked all vacuum lines and good, my 4x4 engages and no issue with it locking in. I am Puzzled on what it could be?
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I seem to be having an issue with my air conditioning. I don't think it's an ID-10T error, but it is very peculiar.
My driver side vents blow hot or lukewarm air, however my passenger vents are ice cold. I have the 15 limited, so it does have the "dual" control, and as such I think the issue may be related to that.
Both controls are set to low, max fan, head only, and AC. The "Sync" and "Auto" buttons have no effect.
Any things I can check? I really do not want to bring it into the dealer as they treated me very poorly the last time I came in and my car was out for a month.
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I have a '06 2.0T Auto, and the first cold day since I purchased the car was a week ago (I live in North FL) and turned on the heat, to find out that little to no heat was getting let out, so I brought it to my local guy, and said that the thermostat was probably stuck open, so he replaced the thermostat and housing for a couple hoses , and tested out the heat just now (55 degrees out), have it on 80 degrees and full blast, and still nothing. Also, usually I hear the cooling fan kick on after I shut off the car for about 5-10 secs, but haven't heard it since its not 90+ out. Its in the 70s.
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