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Trailblazer LT 4.2L L6. Just hoping someone else had this problem repaired. It seems to be a loose connection because bumps or even up shifting causes them to turn on or back off. The 2006 .... Citibank atlanta branches

Ac not working at all I had paid someone to change out my factory stereo in my 07 chevrolet trailblazer. When i left i tried using my a/c and nothing was blowing out of the vents at the top. I've tried getting a new a/c control module, replaced it and it still didn't work at all. I disconnected the battery along with the hvac fuses for 30 seconds.In episode 102 of Bad Hombre Garage, I do some quick troubleshooting and show you how I fixed the malfunctioning heater/air conditioner blower fan on my 2003...Remove the HVAC B fuse for a minimum of 10 seconds. Install the HVAC B fuse. Start the vehicle. Wait 40 seconds for the HVAC control module to self-calibrate. Hi, I recommend you try a calibration. Remove the HVAC B fuse for a minimum of 10 seconds. Install the HVAC B fuse. Start the vehicle.I have replaced the actuator, but I can not get the SS to calibrate correctly. I have pulled the HVAC fuse (#39) and left it out overnight. But it doesn't sound like the SS goes through the calibration and my vents are stuck on defrost. I've read that my temp is supposed to default to 74 degrees after I pull the fuse, but it doesn't.Remove the HVAC B fuse (in the fuse box under the rear seat) for a minimum of 10 seconds. Install the HVAC B fuse. Start the vehicle. Wait 40 seconds for the HVAC control module to self-calibrate. Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating.Drivers changed air temperature far more often than they change the mode (defrost, floor heat, dash vents, etc.), so the temperature actuators generally fail first. When that happens, the HVAC system can be stuck on blows cold air or blows hot air. In a dual zone system, you wind up with a blows cold one side, hot on other side condition.2003 trailblazer that has hot air blowing out of drivers side vents when it should be cold air. Answered in 33 minutes by: Chevy Mechanic: David H. There are 2 temp. door actuators that control the temp. output.One actuator for the driver and one for the passenger.One of your actuators has failed causing the temp. control problem.1. AC Blowing No Air at All. Usually the culprit. If your Chevy Blazer has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. When there’s no air flowing through the vehicle’s cabin, a bad blower motor usually causes this scenario.Heater Fan Not Working Properly 5. Heater Connector Glowed Red Hot 4. Smoke Coming Out Of Vents While Ac On With Plastic Smell 3. Heater Fan Won't Stop Running When Key (Switch) Is Off 2. A/C ...If the blower motor stops working due to a fault, the air will not flow out of the vents when you switch on the AC in your Equinox. The most common causes for AC fan blower motor not working in Chevy Equinox are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken ...326 posts · Joined 2013. #12 · Jul 9, 2013. it could be low on charge but if its ice cold on pass side and hot on driver its more than likely a bad left temp actuator and its a mo fo pita to do the dealer will probably cost around 6 or 7 hundred bucks.2002 Chevy trailblazer LT. I’m having a problem with the HVAC system. The driver side is blowing hot air and the passenger side is blowing cold air when the air conditioning is turned on. I have pulled and replaced the driver side blend door actuator. I have followed the steps to do the recalibration.Disconnect electrical harness connector from electric blend door actuator. Remove three retaining screws. Carefully pull electric blend door actuator outward and off A/C evaporator housing (19850) assembly. Installation. Follow removal procedure in reverse order. Air temperature control door shaft is keyed.04 Chevy Trailblazer won't move; My 02 Chevrolet trailblazer; What does it mean when red dashes light up and beep on the dash when driving; Is it ok to pull my front axles out and the front drive shaft on a 2006 chevy trailblazer 4x4; Will a 02 engine swap with a 07 engine on a 'chevy trailblazer LSTI am working on a 2003 Chevy Trailblazer, and the vents continually blow out warm air and when you turn the air to blow on the floor or even defrost it keeps blowing out the dash vents and does not bl ... On my 2006 Trailblazer LT, I can not get airflow out (hot or cold) of the four chest vents with vents open. ... The heating and air ...Chevrolet 2003 TrailBlazer For a digital air flow system try resetting the HVAC unit. Either take out the fuse for the HVAC module or disconnect the battery for 5 or 10 minutes. Reconnect battery or replace fuse. Turn the ignition to ON and DO NOT STARTor ATTEMPT to START ENGINE !!.You should hear the actuators, motors etc resetting.I have a 2004 Trailblazer. The A/C vents on the floor and the defrost work, but the dash vents do not unless I pull the HVAC B fuse inside. Of course then it blows hot air, but that's the only way air will come from the dash vents. Any suggestions of what I could check next?2002 Chevy Trailblazer LTZ is blowing HOT air from driver's side vents - HELP! ... Hate to suggest a trip to the dealer, but you might be able to find a local mechanic who would work on this for less. Climate control problems are almost always expensive. ... Does anybody have any idea why the top vents on my 2002 Chevy Trailblazer will not …2003 trailblazer that has hot air blowing out of drivers side vents when it should be cold air. Answered in 33 minutes by: Chevy Mechanic: David H. There are 2 temp. door actuators that control the temp. output.One actuator for the driver and one for the passenger.One of your actuators has failed causing the temp. control problem.2007 Trailblazer LT A/C issues i took my trailblazer to sears to get the oil changed and tires rotated, when i left and got back on the interstate my A/C did not work and im not sure if sears had anything to do with it or not. but i noticed when my wife tried to turn on the rear ac for our son it did not work either. i pulled over made sure she was hitting the correct button an se was but i ...retg. 423 posts · Joined 2013. #2 · Jun 15, 2013. Pull the negative battery cable and re-install, making sure it is very tight (also check the positive to make sure it is tight). See if this fixes the problem.Use your socket, ratchet and extension to unbolt the blower motor. Unplug the wiring harness from the blower motor and pull the blower motor down and out. Insert the blower motor up into place. Plug in the wiring harness. Bolt into place with your 7 mm socket and ratchet. Rehook your glove box back in and close it.Air Conditioning not working? ... 212 posts · Joined 2006 Add to quote; Only show this user #1 ... A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, towing capacity, maintenance, and more! ...Describing three most common blower motor problems and how to fix them. DIY friendly.Be sure to also check the "5 Reasons Why Your Car Heater Is Not Working"...40,000 MILES. Hi, the rear heater vents just blow cold air. The vents for the front system blow hot air and the engine temp is to specs. You can control the rear cabin fan speed from the front or from the rear. The fan speed will adjust with the controls from either one but no matter what you do all you can get from the rear vents is cold air.Go to the Bluetooth settings on your smartphone. Locate the list of paired devices and find the entry for your car's infotainment system. Tap on the "Forget," "Unpair," or "Remove" option next to your car's entry to disconnect it. Now re-connect your phone with the infotainment system via Bluetooth again.Need the part? https://amzn.to/46aWCImLost speeds on your AC in your Chevrolet Trailblazer, GMC Envoy or Buick Ranier? In this video we replace the Blower Mo...I could not get any air (hot or cold) from the dash vents, only air blowing from the defrost vents and foot vents, and the back seat vents. After hours of searching I could not find my exact car help, but it sounds like this was the mode door actuator, and the dealer wanted $875 to replace this, the dealer said they probably would have to ...Danish toy company Lego will create a set featuring pioneering women of NASA. Learn more in this HowStuffWorks article. Advertisement Who among us doesn't know an 8-year-old girl (...In today’s digital age, having a reliable and fast internet connection is essential. Whether you’re streaming movies, working from home, or playing online games, a slow and unrelia...Maybe it just needs to be recalibrated. Go to the rear fuse box and pull the HVAC-B fuse for about 10 seconds and put it back in. Then turn the key to RUN but don't start and don't touch anything on the HVAC until it has finished recalibrating the actuators.3497 posts · Joined 2007. #2 · Apr 13, 2007. You have to remove the right side access cover & you'll see 1 bolt holding the vent in. Remove that bolt and the vent should pull out. -Mike. Car Domain. AKA PROVY :thumbsup: Rock On!Basically set your temp to cold before you do it and then remove and replace the actuator. When installing it just make sure the actual door position lines up with the actuator. There should be a notch for alignment but just make sure the door is in the door position is in that position. If you are unsure, start the engine and turn the system ...Hi in this video I will show you how to confirm the fix on you vent no blowing airUnlike what I have read on this forum, the REAR AC in my Trailblazer (non-ext model) is NOT installed in in the roof, instead it is installed between the front seats behind the center console. In my vehicle there are 2 small vents located at the rear of the center console pointing backwards towards the rear seats.2006 Chevy Trailblazer. My A/C controls do not work. Previously, the air was stuck on feet only and woul dnot modes to - Answered by a verified Chevy Mechanic ... trailblazer ss and the a/c heater doesn't blow air to the feet. from the front and rear seat. even when I drive I have air coming threw the vents . ... Why are the top vents on my ...Reasons a 2023 Chevrolet Trailblazer AC Isn't Working. 2023 Chevrolet Trailblazer. The most common reasons a 2023 Chevrolet Trailblazer ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. 0 %. 37 % of the time it's the. AC Refrigerant Leak. 0 %. 21 % of the time it's the.On Amazon:*BLOWER MODULE: https://amzn.to/3awI8q8Quick overview on how to diagnose/replace the hvac blower control module on a 2004 Chevy Trail Blazer. If t...Jul 28, 2021 ... Fixing A/C in under five minutes and it's free! 2009 Chevrolet Avalanche air conditioning malfunction after battery disconnected, ...Jun 25, 2013 · OK, unless you want to guess at what is wrong a 12 volt test light is the best way to find the problem. It is likely to be the blower control assembly which is on the housing next to the blower motor but testing is the best way. toyomoho. 6419 posts · Joined 2006. #7 · May 24, 2008. Have never done the job, thus just going on the manual. There may be 2 electric servomotors, air inlet and air outlet. Removing the glove compartment, ECU and ECU bracket accesses the air inlet servo. This motor should be held in place by 2 screws.Here is the issue, after 60 minutes of use (normal or max A/C) the air flow through the vents decreases. The blower motor is still running and will change speed based on what fan speed you have selected. The heater control module (the dash unit with the knobs) has been replaced on suggestion from a dealership. This didn't resolve anything.Dec 19, 2022 · How to Fix. It is possible to locate the fuse that blows the power to the blower motor from the owner’s manual or from the fuse box cover. If a fuse blows, use a new fuse that has a different amp rating. To check the fuse, first remove the fuses from the box by pulling the fuses out with a fuse puller or by holding the fuses in your hand by ... The 2006 Chevrolet Trailblazer has 10 problems reported for heater / ac not working on all settings. Average repair cost is $160 at 70,800 miles. ... Pain in butter heat coming out of face vent ... MEMBER. 2003 CHEVROLET TRAILBLAZER. 6 CYL. 4WD. AUTOMATIC. 12,000 MILES. Air is not blowing out of my front dash vents regardless of whether the a/c is on or off. The back vents in the middle row of the car work fine. And if any air does decide to come on, it is barely coming out even if you have the fan set on full blast.air duct dont flow out of vents hvac mode acutuator how to remove from a 2006 chevy trailblazer and replace new one. Answered in 5 minutes by: Chevy Mechanic: JHoop. JHoop.Air doesn't come out my vents at all. 4 days and 168,000. ... My A/C controls do not work. Previously, the air was stuck on feet only and woul dnot chang modes to blow on face. It WAS cold, but only on feet. ... I have a 2006 chevy trailblazer SS and the blower motor will not turn off even with the key off doors open only pulling the fuse will ...Turn car on and don't touch the HVAC controls (should automatically come on at like 74). This causes all of the actuators to cycle through their positions while the controller re-learns. If the controller lost the positioning of the diverter actuator, this would re-learn it and possibly fix the issue.The 2008 Chevrolet Trailblazer has been known to have issues with the air conditioner. The most common problem is that the air conditioner will stop working altogether. Other issues include the air conditioner not blowing cold enough, or only blowing out hot air. There have also been reports of strange noises coming from the air conditioner.Buy New Blower Motor Resistor: http://amzn.to/2tJuBKnBuy AC Delco Harness Repair Kit: http://amzn.to/2FGrnZPBuy Dorman Repair Kit: http://amzn.to/2FFMmfdCabl...A technician will diagnose your Chevrolet Trailblazer heater using the symptoms you report as a starting point. Because your Chevrolet Trailblazer heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a …Cigar lighter (power outlet) fuses in the Chevrolet TrailBlazer is the fuse №13 (Cigarette Lighter) in the Underhood Fuse Box and fuses №15 (2002-2003, Auxiliary Power 2), №46 (Auxiliary Power 1) in the Rear Underseat Fuse Box.Press the AUTO button. This may be located on the centerstack, within the climate app on your infotainment screen or in both places. Locations vary by vehicle; check your Owner’s Manual. Set your desired temperature. The system is designed to adjust the fan speed, air flow distribution and delivered air temperature to quickly and efficiently ...1. Check the Fuse. If none of the brake lights are working, we are going to follow the circuit from the fuse box back to the brake pedal. At some point the power is not getting from point A to point B. We just have to find where that is. Please note that tail lights can work even if the brake lights are burned out.HVAC actuators for 03 Chevy Trailblazer, blend door, hot to cold, floor to defrost, floor to ventsJun 25, 2013 · OK, unless you want to guess at what is wrong a 12 volt test light is the best way to find the problem. It is likely to be the blower control assembly which is on the housing next to the blower motor but testing is the best way. Is your rear AC not getting hot or cold and making clicking noises? Are there issues with switching the direction the air blows? You may need to replace your...Here are the symptoms once more.2003 Chevy TB. This started when battery removed. Manual ac. Hot air blowing through all vents when the ac is on. Switches work. Vents do change when switched. Accummulator/condenser gets ice cold in engine compart. When ac switch is pushed on, slight load on engine.Rodney: My HVAC blows hot and cold but all vents are open except driver and passenger feet vents. I bought a mode actuator but that didn’t solve the problem. I recalibrated the hvac many times via snap on scan tool. Pressing the mode button doesn’t change the vents direction. I have two codes b0159 and b3761. Help … Continue …Sometimes, “venting,” or airing our grievances, gets a bad rap. Negative connotations are associated with Sometimes, “venting,” or airing our grievances, gets a bad rap. Negative c...Bulletin No.: 04-01-38-019A. Date: June 07, 2005. TECHNICAL. Subject: Intermittent Slow to Cool HVAC Performance Concerns in High Ambient Temperatures and/or High Humidity Conditions After Start Up, Especially at Low Engine Speeds (Install New Engine Cooling Fan Clutch) Models: 2004-2005 Buick Rainier 2002-2005 Chevrolet TrailBlazer Models 2002-2005 GMC Envoy Models 2002-2004 Oldsmobile ...A technician will diagnose your Chevrolet Trailblazer heater using the symptoms you report as a starting point. Because your Chevrolet Trailblazer heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a combination of these systems.19,053 POSTS. Place heater fan at hi. disconnect blower motor and check for ground and battery volts at the disconnected wire if you have both remove and replace blower motor. if not suspect blower motor speed resister. Blower Motor Resistor Assembly Located Below right side of dash, near blower motor.Apr 28, 2013 · I could not get any air (hot or cold) from the dash vents, only air blowing from the defrost vents and foot vents, and the back seat vents. After hours of searching I could not find my exact car help, but it sounds like this was the mode door actuator, and the dealer wanted $875 to replace this, the dealer said they probably would have to ... Have a 2004 Chevy Trailblazer LS. A/C will not blow out of dash vents. Heater and defrost is fine. Told it was an actuator. Have dash tore apart but do not know where actuator for this problem is located. There's two of them up high and one low towards the back of the box near the console on the driver's side.4.2L. 6 CYL. 2WD. AUTOMATIC. 133,484 MILES. Recently my front vents stopped working on my vehicle. I've tried to re-calibrate by taking out the fuse, waiting a couple minutes, putting the fuse back in, turning the car to run, letting it go through its motions, but that didn't work. The air blows cold, but it is only coming out at the feet, side ...cullis.william Discussion starter. 2 posts · Joined 2023. #3 · Jul 31, 2023. There is a 10amp fuse labeled AC under the hood. Some of the Youtube videos tell you to pull that fuse. I probably have a bad blend door driver side. Cold air passenger side, neutral air driver side. Trying on this post to confirm doing reset procedure correctly.2003 CHEVROLET TRAILBLAZER. 6 CYL. 4WD. AUTOMATIC. 12,000 MILES. Air is not blowing out of my front dash vents regardless of whether the a/c is on or off. The back vents in the middle row of the car work fine. And if any air does decide to come on, it is barely coming out even if you have the fan set on full blast. Help, please!Learn how to fix the common problem of air only blowing out of the defrost or top vents on your Chevy Tahoe with this easy video tutorial.MEMBER. 2003 CHEVROLET TRAILBLAZER. 6 CYL. 4WD. AUTOMATIC. 12,000 MILES. Air is not blowing out of my front dash vents regardless of whether the a/c is on or off. The back vents in the middle row of the car work fine. And if any air does decide to come on, it is barely coming out even if you have the fan set on full blast.I have 2006 Chevy Trailblazer 6 Cyl EXT... my front AC/Heater Blower works intermittently, sometimes not at all for a day or two, then will work for a while then stop. It doesn't really pick which setting to not work at, it will stop at any level. I can still get cold air if I am going 45 or more and keep the setting to vent and not circulate.2008 chevy trailblazer AUTOMATIC TRANSMISSION 4.2L 4X4 ID TAD 495904 will this work on 2006 trailblazer.and whats needed to make work ... 2006 chevy Trailblazer 4.2L A/C compressor works but no blower.Control head display works and appears to activate blower with bar display but no air out of vents.Does this use a blower resistor block ...We got it home, everything was fine, and then the battery went dead. The next day we went and got battery, and about 2 hours after we replaced it, the panel vents quit working, but the floor and defrost still worked. You could still change the temp and speed, but no matter what mode, the floor and defrost were the only vents to blow.Need the part? https://amzn.to/46aWCImLost speeds on your AC in your Chevrolet Trailblazer, GMC Envoy or Buick Ranier? In this video we replace the Blower Mo...2008 Chevy trailblazer I-6 Engine: Intermittent Temp Gauge / A/c Hello, My 2008 Trailblazer has been throwing the PO128 OBDII Code on and off for the past 4 years. The intermittent engine coolant temperature gauge & A/C always fail to work at the same time.Answered in 2 hours by: Chevy Mechanic: Dave Nova. The power is supplied by the LT DOORS circuit breaker in the rear fuse panel under the back seat. If the Left rear window switch works, then this circuit breaker is good. Try removing this circuit breaker and reinstall it to see if cycling the power to the drivers switch will reset the internal ...1. AC Blowing No Air at All. Usually the culprit. If your Chevy Blazer has no air moving through the climate system at all, that's a lot easier to diagnose than the air that is blowing not being cool enough. When there's no air flowing through the vehicle's cabin, a bad blower motor usually causes this scenario.26436 posts · Joined 2005. #2 · Jul 31, 2009. The rear AC mode actuator can fail just like the front ones. Try pulling the fuse for a control module reset, or get ready to replace the actuator. Make sure you get the mode, and not the temp actuator. Post up if you need the exploded diagram from compnine.com, which has been posted before.

2006 trailblazer the blower for the back works and heater. But the blower for the front doesn't. The heat is there but the blower isn't. It will work then it wont then sometimes it will run even with the key out of the ignition. But most of the time it doesn't work. Posted by fishstix5 on Dec 10, 2009.. Popped a perc 30

2006 chevy trailblazer ac vents not working

Jul 26, 2019 · First, check the condenser to make sure it’s not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it’s low, you’ll need to charge it and find out where the leak came originated. 1. Loose Connections At The Wiring Harness. You replaced it but the new blend door actuator is not working! If the wires come loose at the wiring harness at the back of the module for actuators, replacing the actuator alone will not get any luck. Despite changing the actuator, the blend door actuator will not get the power it needs for operating.Try pulling fuse #36 in the rear fuse block for 30 seconds. Then turn on the ignition, but you don't even need to start the engine. Listen for all the actuators to move and the blower to try all speeds. And don't touch any controls until it's done.Evil SS 2006 Discussion starter. 11408 posts · Joined 2007. #1 · Dec 24, 2009. Before I broke the motor, I noticed that no matter what I did to the controls, the HVAC system was stuck moving air from the defroster and lower heater vents. The dealer diaged it as the mode door actuator, anyone have info on how to get to it in the center console ...It's not unusual for the connector/wire to the fan to burn up, or for the connector to the resistor pack (controls fan speed) to burn up, or for the resistor pack to fail. But, you need to remove/examine/test to see where the problem is. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd.1. AC Blowing No Air at All. Usually the culprit. If your Chevy Blazer has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. When there’s no air flowing through the vehicle’s cabin, a bad blower motor usually causes this scenario.2004 Chevy Trailblazer with broken front vent actuator. For some time my trailblazer would not blow air out of the front vents. It is a common problem for ...I am working on a 2003 Chevy Trailblazer, and the vents continually blow out warm air and when you turn the air to blow on the floor or even defrost it keeps blowing out the dash vents and does not bl ... Chevrolet SUV 2003- the air conditioner is blowing cool air but not thru the front vents. The cool air is only coming out in the vents below ...1.With key off, remove fuses #36 & 39 from rear fuse box, wait about 90 seconds and then reinstall. 2. Turn key to ON position (don't need to start engine), do not touch any HVAC controls for at least 90 seconds. 3. Start engine and check operation of HVAC, if there is still a problem repeat steps 1 & 2 one more time.The rear fan will not come on unless the HVAC plenum in the rear can be modulated (made hotter or colder). This is part of GM's Astro Ventilation --- left over from 1959 or so --- maybe older. My '05 TB/EXT won't allow the fan to operate unless there's sufficient heat or chilling ability in the rear unit to actually work as the settings call out.My 2002 GMC Envoy is having A/C problems. I decided to swap an A/C actuator to see if it would fix the problem, it did not. I have to get another A/C control...Check your owners manual, and see if there is a fuse to that system, if there is, check and see if it is blown. If it isn't, then the problem could either be your blower fan itself, or your blower motor resistor. Generally, when the blower fan goes bad, no speeds of the fan work. When the Blower motor resistor goes bad, usually only 1 speed of ...MECHANIC. 48,606 POSTS. Check to see if both heater hoses are hot going to heater. Check fluid level if low have pressure checked for a leak, finally check to see if actuator is working onheater under dash. SPONSORED LINKS.Front vents NOT blowing air~~~~QUICK FIX, In this video i will show you how to fix low air flow through your cars vents.IF YOU ENJOY MY CONTENT BUY ME A CUP ...Maybe it just needs to be recalibrated. Go to the rear fuse box and pull the HVAC-B fuse for about 10 seconds and put it back in. Then turn the key to RUN but don't start and don't touch anything on the HVAC until it has finished recalibrating the actuators.Step-by-step guide on how to install / remove / replace middle dashboard air vents on Chevy Tahoe ( 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | P...Chevy TrailBlazer a/c vents have hot and cold air at same time due to actuator after battery replacement (they need to be reset)If the air vents of the Chevy trailblazer 2004 are not blowing air, have the fuel pump checked. ... The blend door actuator may not be working. ... Where are the fuel injectors on a 2006 dodge ram ...3,854 Answers. Pull the HVAC B fuse located inside the truck for 5 min and then place it back in.The short time the fuse is out and placed back in, the control module will attempt to recalibrate all the actuators, by running them CW and CCW until they hit their stops. Then the control module remembers those positions and tries to not slam the ...I have a 2002 Trailblazer LS. And for some reason, even when my right AC knob is turned all the way to the left (which should be dash vents only) it blows air from both the vents on the dash >and< the floor vents.And sometimes, when the knob gets turned back and forth to change modes it wont actually turn the dash vents on at all.It …I have 2006 Chevy Trailblazer 6 Cyl EXT... my front AC/Heater Blower works intermittently, sometimes not at all for a day or two, then will work for a while then stop. It doesn't really pick which setting to not work at, it will stop at any level. I can still get cold air if I am going 45 or more and keep the setting to vent and not circulate..

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