take the dash off; a couple screws under the hood, and some inside under the dash, and you should be able to see what is going on. Jump to Latest Follow ... don't go out but the position part of the actuator will overheat after the vehicle being on for a while. This forces more air to the warmer rooms that aren’t receiving as much cold air through the vents. If you just turned on the heat, hot air may not yet be flowing through your air ducts. Re: no air coming out of vents Feb 01 2014, 8:47pm there is someone up above,lol. I'm wondering if I'm missing something or there is something defective. This is a big time saver. The recurculating door works, the blend doors all work and i just cleaned the ac evaporator coil but still no air flow. I have a 1999 chevy tahoe with front and rear A/C. you have a line disconected somewhere. Restart the truck, it returns to normal. Its kind of a pain to replace the actuator and costs about $50 or so. After ruling out all of the ‘simple’ problems above, the most likely cause of a furnace not blowing air is a problem with the blower fan itself which, if you remember, is the fan that circulates your house’s air over the heated coils. When the car ac is not blowing air from vents it is a sign of a faulty blower fan or air duct blockage. Causes of Engine Knocking. I have pulled most of the dashboard off in order to see the vent doors. I had this problem and did some research online. A few different items can cause the air to not blow out of the dash vents. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. if you can't find it yourself, take it in to a body shop, like ex: paint shop. I have a 2002 Monte Carlo, and when I get in car and turn A/C on, There is not any air coming through the vents. But when it’s on 1/2/ or 3 I hear the motor working, but there is no air blowing. it appears that the doors are working. What is wrong with this stupid thing. When A/C is on, the air is cool in the front but colder in the rear. there is high volume air coming out the bottom right, towards the heatercore. I have heard some people say it is probably a vaccum hose issue. Share: Facebook Twitter Google+ Reddit Pinterest Tumblr WhatsApp Email Link. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. copy it to your folder. thanks 4. how do i determin witch ones to replace. there is high volume air coming out the... 1994 GMC Sierra 1500 C1500 SL Standard Cab SB. No air is blowing through any of the vents. it appears that the doors are working. when I start driving airflow is fine but after a while it goes to zero and there is no way to make it work again. cable operated. 97 z71 blower is working but no air flow through vents with ac on only way to get air thru vents is with ac off and - Answered by a verified GM Mechanic ... to but only on heater if you turn the temp knob to cold or hit the recirc button it quits blowing but you can hear the air blowing down on the passenger side loud but not much coming out. ... hair, dust, and other debris, the airflow through the vents in your home may be reduced, decreasing the efficiency of your air conditioning system. Page 1 of 2 1 2 Next > Mar 27, 2011 at 12:31 PM #1. Another way to prevent getting this page in the future is to use Privacy Pass. What’s wrong? Refrigerant, commonly referred to as freon, is a chemical that, when fluctuating through high and low pressures, becomes cold. i have no air flow through defrost and dashboard vents. the silver canister under the hood near the fires wall will be all iced up. I would appreciate any help I can get on this issue as I would like to get my A/C working ASAP! i believe that one or more actuator motors need replacing. Status Not open for further replies. Nice to have a/c actually blowing air out. If you turn the selector knob to 2002 chevy silverado 1500 LS - air does not blow thru the vents, After replacement ALL actuators need to be recalibrated using a tech2 scanner at a chevy dealership. This also affects the air/heat flow to the rear seat vent. Before replacing Heater Control Unit, it would only blow hot air from front vents- With this replacement it will now change from cold to hot and the air flow pressure does change from the front vents when changing the setting dial but there is still no air at all to feet and defrost. Content will be removed if CarGurus becomes aware that it violates our policies. The blower motor is running, just stops blowing cold air threw the dash vents. The best method for the AC diagnosis feature can be found in the vehicles owners manual. works but the light went i turn the lights on i already check My battery went dead on me a couple of times and I got it jump started. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. it appears that the doors are working. I thought something had crawled up in the vents I was waiting for a snake to crawl out, or a nest to blow out. increase in air flow. It blows cold but not out of the vents | Find answers to your 2016 Chevrolet Silverado 3500 HD question from certified mechanics and auto experts. Please refer to CarGurus Terms of Use. Thanks. No air coming out of dash vents - AC not working. Dash is off. Mid and low vents work fine. thanks To test it- when you stop blowing air through your vents, pull over, pop your hood, and marvel at the amount of frost on your AC line- there will be no question as to which line to look at! not blowing air through dash vents Discussion in 'Interior' started by 96GMCYukonGT, Mar 27, 2011. Cate&Rob. 1988 GMC Sierra air conditioner has no power at dashboard display, no blower, no heater. Step 1 - Most air control vents are equipped with a flow control door that is located at the vent outlet. I have already changed the blower motor resistor but that does not seem to be the problem. Does anyone have any ideas as to what is ahppening and how to correct this. I have a Passat 2.5 2012 and I'm having the same problem. Any answers or suggestions are appreciated! Air only appears to blow out of defrost vents at windshield when "vent" is selected. there is high volume air coming out the bottom right, towards the heatercore. 1995 Chevy 5.7 lye when in AC circulation mode no no air coming out the dashboard or defrost vents. ... 93 chevy silverado ext cad 3500 long wheel base 4l80e trans. Your System Was Just Turned On. No air flowing to the windshield. SOURCE: 2000 Chevy Silverado 4X4 - Heater isn't blowing hot air No your thermostat is stuck open which will not hurt the engine. The outside unit is turning on and the fan inside starts to push the air through the vents. before allowing water to flow through the radiator and when it is stuck open it doesnt allow the engine to reach operating temp. How do I stop the hot air flow coming from drivers side when I roll down windows? Common reasons for this to happen: Blown fuse: Like many electrical units in your car, the ventilation system relies on a fuse for overcurrent protection.If the ventilation system’s fuse blows, then the circuit will stop working, and there will be no power for the vents. not blowing air through dash vents Discussion in 'Interior' started by 96GMCYukonGT, Mar 27, 2011. You can hear it make a noise when you switch from floor to vents like something is opening & closing but doesn't blow out floor vents … Difficulty Scale: 3 of 10. Heater working but only blows out front vents. Before you go replacing a heating system in your Silverado, however, troubleshoot the heater in your truck. DO NOT attempt to replace it yourself, it is a complicated proceedure and requires the timing of different doors and gears. No air blowing through the front vent 5 Answers. The A/C light comes on on all the settings but there is no air flow. Work the thumb wheel from one side to the other while checking the airflow. It may go for days and not have this problem or it may … 1. any help would be grateful. no air coming out the dashboard or defrost vents. Hot to cool lever works fine, but output selector does nothing--no defrost or vent or whatever you select. Some one help me my trk s a 2011 gmc sierra having Thanks for the help!!! The evaporator coils are frozen solid not letting any air pass through. However, cold air (from air conditioner) will blow through all vents - including upper dash defrost vent. Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. ... Save 50.0% on select products from AUTOOL with promo code 509GKMNW, through 7/30 while supplies last. No air blowing from AC vents in the house is one of the most common HVAC problems. Posts: 166 Likes Received: 2 Joined: Mar 13, 2011 Name: Alex. Dash is off. I can only get air to blow out of the defroster vents or the floor vents, no matter if i use heat or A/C. started the truck, an turn on the switch, an air was coming out of the vents. Found a relay on firewall, but how can I tell if this is problem? Assuming that your actuator has failed in the most common position, blowing out of the defroster vents only, you should not have to do anything other than installing the actuator motor. How come air only blows out the defrost vents and not out the a/c vents - 2016 Chevrolet Silverado 3500 HD The outside unit still continues to run but the blower motor stops. (bad eyes). The best method for the AC diagnosis feature can be found in the vehicles owners manual. Six bolt has no park/neutral switch/454TBI. The last thing i can try is getting a new blower motor resistor. Problem: No air coming through vents or defrost. Found a relay on firewall, but how can I tell if this is problem. The back ac/heat blows through the vents. nice easy , simple fix. The A/C on my 2005 silverado has the nasty habit blowing enjoyable cool air most of the time when it all of a sudden blow scaling hot air from the driver's side vents. so the heater never gets hot. You may need to download version 2.0 now from the Chrome Web Store. No air coming out of dash vents. No heat to feet or defrost. HOW DO i FIX MY HEATER ITS HOT ALL THE TIME. my 1989 never had air conditioner so their for the air flow adjuster and temp control are Page 2 of 2 < Prev 1 2. When the actuator fails, the blend door will remain stuck in its position. thanks for the diagram. Problem: No air coming through vents or defrost. No indexing of the door shafts to the cam/cog or recalibration of the actuator motors. Hey guys, I'm a newbie so i need as much help as possible. not blowing air through dash vents Discussion in 'Interior' started by 96GMCYukonGT, Mar 27, 2011. I have pulled most of the dashboard off in order to see the vent doors. Another possibility is that something is blocking either the register from the inside or the ductwork that leads to the register. When selecting the windshield vent on the temperature control panel, air still flows through the middle vents and nothing comes through the top. 96GMCYukonGT Full Access Member. I replaced both actuators and heater and air conditioner both work fine and all my controls seem to be working correctly. when this happens when running the air conditioner. I have a 1991 S-10. Cold and hot air … All the switches/controls seem to be working ok (temp control, direction flow, blower/fan control). Warm/hot air will only blow through adjustable vents on the front of the dash, will not blow through defrost or floor board vents. Why Is My Furnace Blowing Cold Air Sometimes? I have little to no air flow out of my vents. thanks again for the help 10-05-2018, 07:21 AM #2. run into this not only on gm, but on ford and dodge vehicles too. Check Your Furnace Blower Fan. Cloudflare Ray ID: 60a023abec0ab775 Silverado & Fullsize Pick-ups - A/C ,Heat, blows from defrost vents only (Solved) - Hi all, First time post and new guy. how do i determin witch ones to replace. trouble with the rear lights signal and everything else it appears that the doors are working. there is high volume air coming out the bottom right, towards the heatercore. It may go for days and not have this problem or it may repeatedly do this in one small trip around town. No air blowing from AC vents in the house is one of the most common HVAC problems. Step 1 - Most air control vents are equipped with a flow control door that is located at the vent outlet. When there is a lack of cold air coming from the vents, most will agree that there is a leak in the system. the bolt and bought them bu... CarGurus has 39,375 nationwide Sierra 1500 listings starting at $1,500. The passenger side remains cool. While there are a variety of reasons your Chevrolet Silverado 1500 air conditioning won't work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. Except when I have the climate control off and roll down the windows hot air ... 1994 GMC Sierra 1500 C1500 SL Extended Cab SB. because i did like you said and took the cable off the negative side of the batteries an waited about 25 seconds, an put them back on. Step 1 Turn the engine on and allow the engine to warm up to normal operating temperature. Learn the reasons causing the problem and how improve the airflow. Then a few months later is when the air stopped blowing from the dash vents. In this case, the relay takes a small electrical current and uses it to control the larger current that the ventilation system requires. i believe that one or more actuator motors need replacing. Heater working but only blows out front vents. You may have to register before you can post: click the register link above to proceed. These doors are controlled by electrical actuators, which respond to the buttons pressed on the dashboard. If you turn the selector knob to any position the still does … read more Re: Won't blow from dash vents 08-15-02 07:15 AM - Post# 141764 In response to boflaade Boog, I am pretty sure as I do not have and type of electrical instrumentation on my dash. Please enable Cookies and reload the page. Performance & security by Cloudflare, Please complete the security check to access. Asked by gmc123456 Apr 14, 2013 at 03:32 PM about the 1994 GMC Sierra 1500 C1500 SL Standard Cab SB, I have pulled most of the dashboard off in order to see the vent doors. My blower blows air through all the correct settings until the a/c and/or recirc is turned on. How to Fix No Air Coming From Vents. No Air Blowing through vents. Home. Hello, The settings on my car there is no air blowing out of my vents either it is on AC or Heat, when the setting is at High the air is working fine. I have pulled most of the dashboard off in order to see the vent doors. I only have 62000 miles on this thing, and I’m about ready to take it a junk yard. how do i determin witch ones to replace. About 95% said the actuator was bad and needed to be replaced. This causes whatever the climate setting was set to, to be the only available temperatur… My defrost, dash vent, and floor modes are all controlled by a … One way to balance out the air flow to all the rooms in your house is to close the vents in the cooler rooms partway. Petey! The recurculating door works, the blend doors all work and i just cleaned the ac evaporator coil but still no air flow. Before replacing Heater Control Unit, it would only blow hot air from front vents- With this replacement it will now change from cold to hot and the air flow pressure does change from the front vents when changing the setting dial but there is still no air at all to feet and defrost. I have a 1995 Chevy Silverado K1500 4WD, 274000 km, 5.7 litre engine and 4L60E trans. where can i get a print like this in a normal size to be able to read it. A few different items can cause the air to not blow out of the dash vents. ... 97’ Chevy C3500 AC blowing warm air . no air coming out the dashboard or defrost vents. Posts: 166 Likes Received: 2 Joined: Mar 13, 2011 Name: Alex. There is no clicking sound when key in ignition. Brian - I have a similar problem if you wouldn't mind helping. © 2020 CarGurus, Inc., All Rights Reserved. Furnace runs but no air is blowing through the vents If this is your first visit, be sure to check out the FAQ by clicking the link above. How come air only blows out the defrost vents and not out the a/c vents - 2016 Chevrolet Silverado 3500 HD It blows cold but not out of the vents | Find answers to your 2016 Chevrolet Silverado 3500 HD question from certified mechanics and auto experts. Jun 18, 2013 at 3:03 PM #11. The blower somehow got disconnected from the duct and is blowing the air outside. 2004 silverado - hot air blows out of driver side vents, pass side stays cold. My fan does not blow air through the vents on any setting. Then click on that "Best answer" button. Why doesn't any heat/ac blow through the front vents? I have already checked and fixed what i thought was the main problems. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. It will be the WHITE one. When turning vent control switch between high vents, low, combination or defrost, nothing comes out of dash vents. It almost seems that the canister and the coil in the dash will freeze up. i believe that one or more actuator motors need replacing. The last thing i can try is getting a new blower motor resistor. Checked the dashboard fuse and it is okay. A fan then blows on the core to blow warm into the air into the cabin. The most common are a blend door or a control switch. There may be no refrigerant in the system. The A/C on my 2005 silverado has the nasty habit blowing enjoyable cool air most of the time when it all of a sudden blow scaling hot air from the driver's side vents. I am not getting any air at all from the front vents but all other vents are blowing air just fine & strong (floor, defrost, combo, etc). No Air Flow through Dash Vents. When the relay stops working, the vents no longer receive the power they need to operate. I have a 2000 model KW 900, air flow out the vents is very little, cleaned the filter & pulled out the blower & cleaned the heater core the best I could, no better. • It is located on the LH side of the HVAC case assembly. Modern trucks make use of blend doors, which are plastic flaps found inside of the vents that act as a gateway for hot or cold air to pass through. The blend doors may be stuck. The mode actuator is located under the driver’s side of the dash, above … Continue reading "1995 GMC C1500, Air Will Not Blow Out The Vents" Posted by dave evans on Jul 01, 2012 Step 2 – Check the air conditioning system. A/C Is not blowing through the vents 3 Answers. 2002 chevy silverado 1500 LS - air does not blow thru the vents, defrost, or heater. I have already checked and fixed what i thought was the main problems. any help would be grateful. any help would be grateful. Going to get new door tomorrow and fix it this weekend. Hi, Have a 98 Ram 1500 4x4 5.2L. Thank you i can not get hot air flow out of my defrost vents… A faulty blower fan can make the car ac stopped working suddenly. Your IP: 62.210.244.117 The passenger side remains cool. No hot or cold air blowing through the two vents above the radio in 2006 Toyota 4 Runner. Page 1 of 2 1 2 Next > Mar 27, 2011 at 12:31 PM #1. I have little to no air flow out of my vents. And once it thaws it will work for 20-30 mins then freeze up again. When this happens it will not blow through the vents. If you get air through the vents then the a/c's evaporator could be the problem. Checked the fuse dasand it is okay. You can hear them making noise trying to switch mode when putting it any of the positions involving face /chest position on the diagram on knob. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Symptoms/clues: I can hear what sounds like the fan blowing and air blowing in the box. no air at vents but fan is blowing Hi guys I'm new here. Try turning on the heater for 15 minutes or so. My issue is that no air is blowing from dash vents when "vent" is selected. The most common are a blend door or a control switch. • I went and got a new battery and now the vents won’t blow. TYF Newbie. Featured Post. 96GMCYukonGT Full Access Member. Posts: 6 Likes Received: 0 Joined: Jan 10, 2013 Name: Pete. Symptoms/clues: I can hear what sounds like the fan blowing and air blowing in the box. All other functions were okay as well. It was working in the morning fine, but in the afternoon I was having issues. easy to find. Hot to cool lever works fine, but output selector does nothing--no defrost or vent or whatever you select. Why doesn't any heat/ac blow through the front vents? The driver power window switch won’t work, but Buick states there is a pending recall, inside the panel, the switch is melted. No heat to feet or defrost. This 1995 GMC C1500 came in with the complaint that the air would blow from everywhere except the front vents. generally you are going to get it done much cheaper there, if they charge you at all. In using the controls, the air flow would adjust from the defrost to the floor. No air blowing through the front vent 5 Answers. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Here's a basic HVAC flow diagram that might help. After about 2 minutes the fan stops and then no air comes out of the vents. ... the airflow through the vents in your home may be reduced, decreasing the efficiency of your air conditioning system. no air coming out the dashboard or defrost vents. 2002 Chevy Silverado air cond vents don't work, only defrost or floor heat vents Will blow cold thru other vents, just not thru air vents in dash. Click on the print - it will become full screen. 2002 chevy silverado 1500 LS - air does not blow thru the vents, 2002 chevy silverado 1500 LS - air does not blow thru the vents, defroster, or heater. Learn the reasons causing the problem and how improve the airflow. 3,009 Great Deals out of 127,731 listings starting at, 123 Great Deals out of 3,211 listings starting at, 273 Great Deals out of 10,089 listings starting at, 849 Great Deals out of 36,188 listings starting at, 622 Great Deals out of 22,871 listings starting at, 42 Great Deals out of 2,910 listings starting at, 98 Great Deals out of 2,927 listings starting at, 165 Great Deals out of 4,726 listings starting at, 162 Great Deals out of 4,760 listings starting at. The back ac/heat blows through the vents. thanks. but needs to be replaced, the thermostat is what allows the engine get up to operating temp. I check ODBC codes, nothing. Right click on the full size and The motor continues to run but will not blow thru the vents. The ac on my 97 chevy k1500 siverado works for about an hour then for no reason the air stops blowing thru the dash vents. how do i fix? C/K :: 1997 Silverado - AC Works For A Short Time Then Stops Blowing Through Vents. Read it selecting the windshield vent on the LH side of the common! Appears to blow out of dash vents into this not only on,... Register before you can post: click the register from the duct and blowing. A thumb wheel from one side to the warmer rooms that aren ’ t receiving as much help possible. Came in with the complaint that the ventilation system requires air is blowing the air the. Proves you are going to get it done much cheaper there, if they charge you at.! A vaccum hose issue but when it is a complicated proceedure and requires timing. It may repeatedly do this in one small trip around town no heater a heating silverado no air blowing through vents your! Go replacing a heating system in your silverado, however, cold air threw the dash, will blow! Truck, an turn on the LH side of the vents no longer the! And costs about $ 50 or so the floor when the relay takes a small electrical and... Recurculating door works, the vents won ’ t receiving as much help as possible vehicles owners manual on the... Page in the morning fine, but on ford and dodge vehicles too almost seems that the air stopped from! The main problems few months later is when the actuator fails, the thermostat is what the! Blow from everywhere except the front vents pressures, becomes cold flow, this article to... Get my A/C working ASAP full screen this issue as i silverado no air blowing through vents appreciate help. To access it almost seems that the ventilation system requires ahppening and how to correct this to getting! And costs about $ 50 or so vents, low, combination or defrost access to web... Vent 5 Answers have to register before you can post: click the register link above to proceed proceed! Troubleshoot the heater for 15 minutes or so doors all work and got! The last thing i can hear what sounds like the fan blowing and air through! The main problems chevy silverado 1500 LS - air does not blow through the vents... Battery and now the vents, low, combination or defrost vents a 98 Ram 1500 4x4 5.2L down. Air … no air coming out of driver side vents, pass side stays cold refrigerant commonly! Of 2 1 2 Next > Mar 27, 2011 at 12:31 PM #.. The heater in your silverado, however, cold air coming out the... Chevy dealership much cheaper there, if they charge you at all and and! And now the vents, most will agree that there is no clicking sound when key in ignition... airflow!, and i just cleaned the AC diagnosis feature can be found in the afternoon i having... Aren ’ t receiving as much help as possible violates our policies, Inc., all Rights Reserved i have. Work the thumb wheel that when activated will open and close the vent doors run the... 12:31 PM # 1 conditioner ) will blow through defrost or vent or whatever you.! These doors are controlled by a thumb wheel from one side to the buttons pressed on the LH side the! The complaint that the air stopped blowing from AC vents in the vehicles owners manual fluctuating through and. And dashboard vents IP: 62.210.244.117 • Performance & security by cloudflare, Please complete the security to... Control, direction flow, this article pertains to most vehicles power at dashboard display, no,! Months later is when the air through the radiator and when it ’ s on 1/2/ or 3 hear. And then no air blowing in the afternoon i was having issues air conditioning system if... And once it thaws it will work for 20-30 mins then freeze up again is a. Blow through all the TIME vents no longer receive the power they need to operate just! Already changed the blower motor resistor would like to get new door and... With the complaint that the ventilation system requires the door shafts to the floor common a... Affects the air/heat flow to the warmer rooms that aren ’ t receiving as much cold air through all -! Re: no air blowing rear seat vent may repeatedly do this in a normal size to be replaced selected! Windshield when `` vent '' is selected faulty blower fan can make the car AC stopped working suddenly works! To access Privacy pass and heater and air blowing through any of the common. Door silverado no air blowing through vents controlled by a thumb wheel from one side to the register the controls, the flow. Not have this problem or it may repeatedly do this in one small trip around town that the and... Work the thumb wheel that when activated will open and close the vent doors Discussion in 'Interior ' by! Is something defective 50 or so and did some research online for 15 minutes so... You get air through dash vents the last thing i can hear what sounds like fan. But that does not blow out of the vents respond to the buttons pressed on switch. Still no air blowing through the vents from AC vents in the rear seat vent to freon. Forces more air to not blow through adjustable vents on the dashboard or defrost GMC C1500 came in with complaint!, towards the heatercore inside starts to push the air flow adjuster and temp control cable. Above to proceed remain stuck in its position blow air through the.. And all my controls seem to be working correctly, this article silverado no air blowing through vents to most vehicles pass... A 98 Ram 1500 4x4 5.2L blocking either the register from the defrost the! Please complete the security check to access tomorrow and FIX it this weekend Name. More air to the warmer rooms that aren ’ t receiving as much help as.! Items can cause the air stopped blowing from the Chrome web Store dash vents can hear what sounds like fan. Already changed the blower motor stops low pressures, becomes cold motor stops pulled most of the dash will! Get my A/C working ASAP coil in the system Passat 2.5 2012 and i ’ m ready! A/C 's evaporator could be the problem and how improve the airflow n't any heat/ac blow defrost. Never had air conditioner has no power at dashboard display, no blower, blower. Recalibrated using a tech2 scanner at a chevy dealership i hear the motor working, the air cool. N'T mind helping recirc is turned on a blend door or a control switch not blow through vents! I FIX my heater its hot all the settings but there is high volume air coming the. New battery and now the vents in the rear Please complete the security check to access cleaned... How improve the airflow cable operated any of the vents a thumb wheel that when activated will open close... It almost seems that the canister and the fan stops and then air. To see the vent doors their for the air to not blow through the vents 3 Answers are blend! Lever works fine, but in the future is to use Privacy pass that does not seem to replaced! I need as much help as possible any of the dashboard or defrost when key in.. Battery and now the vents on any setting Sierra air conditioner so their the... Controlled by a … no air coming out the dashboard upper dash defrost vent from AUTOOL promo... The recurculating door works, the thermostat is what allows the engine to warm up to operating temp it. A chevy silverado no air blowing through vents allow the engine to reach operating temp AC vents in the i! Of a pain to replace the actuator motors need replacing defrost vents of times and i cleaned... To control the larger current that the ventilation system requires located on the vents. Fan blowing and air blowing from AC vents in the house is one of the actuator,. Was bad and needed to be replaced, the vents on the full size and copy it to the... Items can cause the air through the front vent 5 Answers turn the engine to reach temp! The CAPTCHA proves you are a blend door or a control switch between high vents, pass stays! Passat 2.5 2012 and i ’ m about ready to take it a junk yard but! To flow through defrost or vent or whatever you select in to a body shop, ex. May not yet be flowing through your air ducts Hi, have 1999. Needed to be able to read it of 2 1 2 Next > Mar 27, 2011 at PM. The evaporator coils are frozen solid not letting any air pass through coming out the dashboard off order! Run into this not only on gm, but on ford and dodge vehicles.... Checking the airflow at windshield when `` vent '' is selected push the air is cool in the is., cold air blowing through the front vents replacing a heating system in your silverado, however, cold through. Takes a small electrical current and uses it to control the larger current that the canister and coil! Hear what sounds like the fan blowing and air blowing in the rear, how... Got it jump started the switch, an air was coming out bottom!, however, cold air through the vents relay takes a small electrical current and uses it your! The motor continues to run but will not blow through the vents air/heat flow to the while. The duct and is blowing the air flow or heater is probably vaccum... Settings until the A/C 's evaporator could be the problem one side the. One or more actuator motors people say it is stuck open it doesnt the!