Having problems with your 2004 GMC Envoy ?
04 Envoy heat and air out of defrost vents nothing out of front vents.
\015 Rear air works fine, front air works just doesn,t work correctly.\015
Repair Help & Product Troubleshooting for 2004 GMC Envoy
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.
Suggested Questions/Answers :
04 Envoy heat and air out of defrost vents nothing out of front vents.
... 2004 GMC Envoy
Air Vents have a 97 Jeep Grand Cherokee with dashboard air vent problems. No air is comming through the dashboard air vents, It comes through the floor vents nor matter what setting I use on the controls. The side vents by the front doors have air. I can see the vacuum motors attempting to move the doors, but nothing happens, No vents air, no defrost, although the control for temperature of the air mixture worls OK.
I had the same problem and read through different forms and when I went under the hood - the vacuum line actually disconnected - put it back on and everything works great - thanks so much for your help ... 1997 Jeep Grand Cherokee
Within the past year I had the heater coil replaced and the blender door because I had heat in the back but not heat in the front.. Afterwards I had heat and air for a few months only. Now I only have a little heat coming from the tiny vents at the top of the vent but nothing coming from the vents.No heat either. Cold air in the back. Also I only get the tiny bit of heat after it has idled for 15-20 min.
It sounds like the blend door motor is failing or is stuck. You could go to mitchell1diy online to diagnose this and for the instructions to remove the dash. Plan on spending a day or two on this if you have never taken a dash out before. ... 1999 Ford Expedition
Air blowing when you turn air on high for heat or ac and have it so air is blowing out front vents you can hear it blowing hard up under passengers side of dash but hardly any ******* out front vents or out defrost vents
Usually a sign you have a blend door that is stuck, or the controller has failed. The blend doors use small electric motors controlled by the main controller on the dash. ... 2000 GMC Sierra
Control pannle for heat and air will shut off and only blow air out from vents in dash cant run defrost or heat only vent in front of the dash
... 1992 Buick LeSabre
Heating / air conditioning control stuck to front defrost vents
There is a vacuum leak under the hood. Find the vacuum line on the passenger side where it comes through the firewall and follow it to the engine. You system needs vacuum to operate and without it the default setting is on defrost for safety reason ... 1999 Dodge Durango
2008 Nissan Versa - defrost not working. Blows through floor or panel when set to those, but when you switch to defrost, it stays on panel or floor, with nothing coming out of the defrost vents. No air ever comes out of front vents at bottom of windshield. I have to defrost with a towel.
The deflector flap that move to direct air flow is stuck under the dash. ... 2008 Nissan Versa
Air conditioning the a/c blows through the side vents against the window but not through the vents in the front of the dash and the rear a/c works just fine. also the heat and just the vents wont blow through the front either. just throught the defrost vent. what is causing this because i live in southern california and right now the temperature is so hot that you could fry an egg on the side walk?
Check your vacuum lines that sevice the plenumm doors that redirect the air. A good kick in one of the foot wells under the dash can dislodge a conection. The other problem may be the main dash selector its self ... 2002 GMC Safari
My air conditioner is working, but the air is not coming out the front vents. I can hear a clicking noise as though the vents are trying to open, but it doesn't happen. The air is then sent to my feet and to the window defrost, but nothing directly at me. The air is cold and I can adjust the speed of the fan.
... 2000 Cadillac DeVille
Have 2000 Dodge Dakota Sport. When I put the heat on defrost or defrost and floor combo it blows warn air out on side window vent and floor but cool air out of front defrost.
... 2000 Dodge Dakota Quad Cab
There is no air coming out the front vents, but I have air conditioning coming out of back seat vent. I have no defrost, no heat, no air conditioning.
If you mean that blower motor is not coming on , you may want to check blower motor resistor. ... 2003 Honda Pilot
No heat coming from vents. Only cold air. 1998 caddy seville with climate control. No air coming from front vents at all, only defroster and heater vents.
Fuse has blown in the heater control unit, I had this on my audi last year most likely cause, get youe user manual and loacte the fuse box. ... 1998 Cadillac Seville
Dodge Grand Caravan 2005. A/C wont blow air in the front vents but the back is fine. Defrost (top of dash and bottom vents by feet) work fine on cold or heat. But when I try to flip the switch to head vents there is slight breeze of cold air coming out and a whistling sound. Almost like a flap or something gets stuck when switching positions. Is this a fuse problem? Or something to do with the blower or resistor? Thanks in advance for any insight!
... 2005 Dodge Grand Caravan
I got the battery changed on my 04 gmc envoy and now the main front vents don't work for my a/c. Everything else works and it blows cold air, but nothing comes out the front vents, is it just a blown fuse?
... 2004 GMC Envoy
I have a 2006 jetta tdi and can't find the manual. i've read what you've been saying - that the owners manual would be wrong anyway. i need to replace the fuse that blows the heat. my heated seats are fine, as well as my rear defroster, but i'm not getting anything out of my front defroster or air vents. Any advice?
Hi, fuse location #25 is your fresh air blower circuit. To proceed any further you will have to use a meter and conduct other tests. The climate door may also be stuck or not operating. ... Volkswagen Jetta
Hvac problem with 04 montana Switch my temp control knob to hot, and my air flow knob to mix front vents and floor vents, and I get hot air out the floor and luke warm air out the front. Since I don't have rear heat this is not enough to warm rear passengers. Turn my air flow knob to only front vents, air flow and temp increase but not enough to stay warm. Switch my temp control to cold, and I get cold air out the front but luke warm air out the floor vents. My feet get hot in the summer. Any i
... 2004 Pontiac Montana
2005 Silverado 2500HD 4WD - It appears that the pneumatic valve controlling the directional air flow from my heater/AC is getting stuck. When I switch the fan to front window defrost then back to front/bottom no air flow comes out the front or bottom air vents - the flow is entirely out the upper defrost vents. If I drive over some bumps the valve loosens and air flow again comes out the front/bottom vents. How do I fix this??? Thanks
The default configuration when all vacuum fails is to defrost vents. Most likely your vacuum supply to the switch is weak. Check the connection of the supply line to the intake manifold for damage. If no problem there, trace it to the switch on th ... 2006 Chevrolet Silverado 2500HD 2WD
My air conditioner is not blowing air out thru the vents if i turn on the fan heat defrost nothing is coming out what could be causing the problem
... 2001 Ford Escape
I have a 1991 camaro.The air or heat doesn't come out through the front vent when switch to vent control.It only come out through the dashboard to defrost the windshield..I have bought and install a new heater blower.Can you please help solve this problem? Thank you for your time....
It is the vent control. It is located on the passenger side behind the dash. It is vacuum controlled. It can fail and not let you change the vent positions.Good Luck! ... Chevrolet Camaro
Air and heat only blowing out through defrost and floor vents in my 1997 Jimmy. When switch is turned to the main vents nothing changes. Where is the auctuator loocated theat changes airflow?
Sounds like you may have a vacume problem in the dash. ... 1997 GMC Jimmy
My heat wont turn on or cold air nothing comes out no defrost no vents nothing
A lady call me one day same problem . a big rat made a nest inside the fan but for u i hope is the relay or the fuse ... 1999 Buick Century
Air and or heat comes out of rear vents and defrost only nothing at feet or through vents on a 2000 chevy silverado
Check the vacuum lines, mainly the main ones under the hood that go to the interior of the truck. You should find that you have a broken line and once you repair the line your problem will be solved. ... 2000 Chevrolet Silverado
2005 gmc envoy manual no air flow from front dash vents defroster and floor vents are fine
Its actuators ... 2005 GMC Envoy
Heat only blows from front vents and only blows hot air defrost dosent work.no matter what temp you put it on in the car the heat stays hot
... 2000 Chrysler 300M
My 2004 expidition blows cold air out the front vents when heat is on and also will only blow out of defrost vents
... 1998 Ford Expedition