2006 gmc sierra blows hot air on drivers side. I don’t have a check engine light on.

2006 gmc sierra blows hot air on drivers side no joy it had plenty of freon in it. I had both sides on cold with the A/C on and the passengers side was still blowing really hot air. I went to the dealership and bought a new blend door actuator. I did so and now the drivers side blows hot all We demonstrated if GMC Sierra the A/C AC blows cold on driver side dash vent, but air conditioner blows hot on passenger side what to check on 2012 GMC Sierra but the video may be helpful on: 2006 Jun 12, 2024 · Common Causes of Hot Air Here are some of the most common reasons why your GMC Sierra ‘s AC might be blowing hot air: 1. The dual climate control issue usually manifests when one side, the drivers or passengers, blows cold air and the other blows hot air. Learn about this problem, why it occurs, and how to fix it. Its pretty easy to get to. Aug 18, 2022 · The truck listed above is an LTR model. This can be due to low coolant levels, a faulty heater core, or a stuck thermostat. 2 GAT “Woe unto them that call evil good, and good evil; that put darkness for light, and light for darkness; that put bitter for sweet, and sweet for bitter!” 2006 Silverado AC Blows Hot Air Intermittently: Causes & Fixes Silverado AC intermittently stops cooling and blows hot air; inconsistent compressor engagement is common. The blend door knob moves freely by hand. I’ll walk you through exactly how to find and use your GMC air conditioner reset button for different models. Jun 20, 2010 · My truck is a 2006 GMC 2500 Duramax Diesel with an Allison 6spd. Does anyone know what causes this? Also, if I wanted Dec 4, 2024 · Hi y'all, I have a 2005 Silverado 1500 that only blows cold air on the driver side but the passenger side can go from warm to cold air. Dec 12, 2024 · Well I got it back and still no heat on the passenger side but plenty on drivers side, previously it was heat on passenger side but no cool air so obviously stuck in hot or cold. First had the p Nov 30, 2022 · Home » Car Questions » AC Blows Hot on Drivers Side Blend Door Actuator 2002-2007 Chevy Silverado Video AC Blows Hot on Drivers Side Blend Door Actuator 2002-2007 Chevy Silverado Video November 30, 2022 Blend Door Actuator Replacement Chevy Silverado and GMC Sierra ( (FIXED)) Feb 26, 2018 · I noticed that the drivers side would blow cold air when the ignition is first turned on, then after about 10 seconds would go to hot. Take off that black kick panel thing, and it will be right there. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Jul 24, 2011 · 2004 silverado - hot air blows out of driver side vents, pass side stays cold. Chevy Silverado 1500 – (Jonathan Weiss / Shutterstock) The most common causes for AC just a quick video on how to replace this blend door actuator with out removing the dash. There are various potential reasons for air blowing on only one side. Many GMC vehicles have reset options that can solve common AC issues in minutes. Check your clutch fan Click to expand mine does this sometimes. I have a 2020 denali 3500 and I lost all heat on the driver side floor/chest/defrost vents. Before you replace it try this: 1. Any ideas? Mar 13, 2013 · Here's whats going on: During the summer (or anytime I run the a/c for that matter) while I run the a/c, the drivers side vents will begin blowing hot air while the passenger side vents continue to blow cold air. Sep 16, 2022 · Driving your GMC Sierra 3500 HD in hot weather with a broken air conditioning system is not only uncomfortable, it can also be dangerous for your health when sweltering heat builds up in the cabin. Identifying the root cause is essential for a quick and effective fix. WHY AC AIR CONDITIONER BLOWS WARM HOT DRIVER SIDE DASH AIR VENT,COLD PASSENGER SIDE GMC SIERRA 14-19If you have GMC SIERRA and the A/C AC blows hot warm air This is actually a blend door actuator that controls the drivers side climate control. Jan 31, 2022 · Driver side on my truck (dual climate) blows hot air with AC on and passenger side blows cold air. I called the dealer and asked if there were other blend doors on Read with interest that other GMC owners have the same issues with the a/c on the driver's side. FIXES These Symptoms -SYMPTOMS:*COLD when you want HOT*HOT when you want COL WHY AC AIR CONDITIONER BLOWS WARM HOT PASSENGER SIDE, COLD DRIVER SIDE GMC SIERRA 2014 2015 2016 2017 2018 2019If you have GMC SIERRA and the A/C AC blows ho Feb 21, 2024 · The summer sun is blazing, you hop into your GMC Sierra, crank the AC, and… nothing. Driver side gets cold air Mar 16, 2021 · The air conditioning is a blessing, especially in hot temperatures. For instance, if the Sep 17, 2024 · Your driver side AC might be blowing hot air due to a faulty blend door actuator or low refrigerant levels. Compressor is cycling on and off. Aug 8, 2013 · Looks like it's on the left side bottom, right on the driver's side. 😎If this video has be How to fix 2002-2007 chevrolet ac that switches to heat on its own- drivers side blend door actuator Diy 1. The truck has sat without running a LOT in the last year. You probably have 2 different problems. I found when you turn the truck off and restart, the problem is corrected for a while. Instead of a refreshing blast of cool air, you’re greeted with lukewarm air or, worse, just a gentle breeze. This means the controller and motor actuator are working. the dri May 22, 2010 · hi all. I will also show you how you can possibly repair your existing The blend door controls airflow direction and temperature by mixing hot and cold air. Or Heat only on drivers side with air conditioning on. 3 K5L - 2012 GMC Sierra SLT 6. These issues can disrupt the proper functioning of your AC system. Blend door actuator out of sink. As mentioned, I believe there are 3 of these motors involved with the HVAC system, one under the dash on the driver side, one behind the glove compartment and one buried behind the radio A/C usually works fine, however, without notice the drivers side A/C vents will blow only hot air, despite the temp controls being all the way to cold. A/C lines at fire wall engine bay one is hot one is cold. I figured this would be calibration, so I popped the HVAC b fuse for 2 mins. Ive tried many different relearn procedures to no avail. I looked around and found that removing the (-) negative post for about 30 mins would fix this. Read this article to find out three common causes for temperature lost on your Silverado Customer: I own a 2004 GMC Sierra, and the air conditioning suddenly starts blowing hot air. Many factors may cause this, including low refrigerant level, damaged temperature sensor, bad door actuator, and more. Jul 25, 2019 · GMC Sierra Air Conditioning Not Blowing Cold: Causes Here are the most common causes of an AC system not blowing cold in the GMC Sierra: Lack of Refrigerant Your Sierra’s air conditioner will not work if the refrigerant level is too low. 3 L V8 has an issue with the AC . How to fix driver side stuck on heat 2005 GMC Sierra Square Body Ram No Start - Complete Hack Job - Part I Trump Rocked by New Epstein Bombshell, Shows Off Gaudy White House Redesign: A Closer Look Dec 4, 2011 · I have a 2005 Silverado. If you're experiencing hot air on the driver side vent and cold air on the passenger side vent this Jul 6, 2015 · Hey everyone. Have an edge tuner that was set on level 4. Apr 25, 2025 · Your AC blows cold on driver side hot on passenger side because the vehicle’s AC system is probably malfunctioning. Jul 3, 2011 · I tried defrost, face, face and feet, etc and nothing is changing. The actuator by the drivers foot is the mode door actuatorcontrols which vents the air blows out of. 2 NHT - 2013 GMC Sierra SLT 6. Place the ignition switch in the RUN position and wait 40 seconds for the ECC module to initialize. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Jul 29, 2017 · Why does my a/c suddenly start blowing hot air from the driver side vents? 2006 GMC Sierra 1500 Asked by kruegerc91a0bf in Duluth, GA on July 29, 2017 How I fixed the HVAC control that was stuck on heat mode (driver side) on My 2005 GMC Sierra. When one or more of these components fails, the heat or cold air capabilities go along with it. I reached my hand out to the right side vents and felt hot air being blown out. I installed it and the issue is still ongoing. Cold lines on ac were cold, cabin was hot AF. Jul 22, 2010 · While in the cooling mode, system will generally blow cold air and maintain set point temperature inside the vehicle, but every 5 to 15 minutes it will blow hot air out both driver and passenger side vents for 30-60 seconds before again blowing cold air. 3l V8 engine. Mar 17, 2024 · I did what you had on the video and I’m still getting hot air out of the passenger side cold air out of the driver side. Jun 9, 2021 · I have dual heater controls and as long as the passenger side is on 60 then it blows hot air on the driver side. Does this sound like the mode door actuator on the HVAC unit? Anyone seen this problem with their truck? GM HVAC BLEND DOOR ACTUATOR RE-CALIBRATIONA simple procedure that may fix your heat and AC controls for free! Some GM trucks in the early 2000's may have an issue where the temperature may get stuck blowing hot air on the driver's side and cold air on the passenger side. Temperature came up nice and the heater only blew luke warm air. It does this in manual or automatic setting. Jan 5, 2017 · I think it's pretty common for these to go bad. Have the digital control head for the HVAC system. It got warm, so I turned the AC off and rolled down the windows 2005 GMC Sierra blowing hot air passenger side solved joshua chikumbindi 606 subscribers 71 Dec 28, 2022 · Looking for suggestions on where to start looking when it comes to no heat on the driver side. 3 4x4 with tons of miles Symptoms: Ac blowing super hot like heater air Ac control panel acting retarded (the one with the auto button and buttons to control fan speed) I did the freon can thing trying to fix it. GMC Sierra 1500 – (dennizn / Shutterstock) The most common causes for AC fan blower motor not working Sep 15, 2010 · Learn about GMC Sierra 2500 HD HVAC temperature problems caused by failed mode door actuators. . Passenger side vents blowing hot air, while middle and driver side is cold Not quite sure what’s going on with my a/c, but after getting in my vehicle and turning on the a/c, I realized that it was a mix of cold and hot air. Low Refrigerant: The refrigerant is the lifeblood of your AC system. It has the manual climate control (dual zone). Blows cold then out of nowhere blows warm. meaning, sometimes I can drive for 30 minutes before it will start to blow hot air. It's underneath the passenger dash, where your feet go. Jul 11, 2024 · 2004 Sierra - Blowing Hot Air on Drivers side - Cold on Passenger. Check for actuator motor function, proper calibration, and inspect for broken blend door gears. Mine May 4, 2012 · Hey I have a 2005 Silverado with the manual dual climate control. 4. Some days, this problem doesn't happen at all, while on other days, it occurs May 21, 2023 · 2009 GMC Yukon XL SLT 5. The truck has dual climate control slide bar to control AC temp on left side and right side. GMC Sierra 1500 – (dennizn / Shutterstock) The heater may stop working in GMC Sierra 1500 due to low coolant level or air in the cooling system, clogged heater core, bad Jan 11, 2015 · I have been researching the same topic because my 2005 Sierra blows hot air thru the passenger side vents when it should be cold. I looked for recalls but didn't find any. If your A/C unit blows hot air on the driver's side, or you hear a clicking sound, the blend door actuator may be bad. The temperature actuator for the drivers side is located under the center of the dash, just above the transmission hump. If I shut the truck off and restart it blows cold again. Cables would bind and stick, causing all kinds of problems. After I replaced my actuator it messed up again like a month later. Long story, but basically I ended up with a new battery. (ignore) 3. Randomly when you’re driving with the ac on it, it’ll stop blowing cold air and start blowing hot air from the driver side vents. Do you still sweat while driving your GMC Sierra 1500? Your air conditioning system no longer cools properly? This can have different causes. Jan 24, 2023 · Diagnose and Fix If the car AC blows cold air on one side and hot on the other, there are a few different causes but it’s likely the blend door actuator, also known as the temperature blend door actuator or vent mode door actuator. In fact, most compressors won’t even cycle on without the right amount of refrigerant pressure (this saves them from eating themselves). Mar 27, 2023 · Today, we’ll tell you why there can be heat on the passenger's side and cold on the driver's side. The driver side actuator is really easy to change. My A/C was stuck on just hot but this repair restored hot/cold functionality Sep 24, 2019 · GMC YUKON BLOWS HOT AIR ONLY— How to Easily RECALIBRATE Just takes a few minutes to take out a fuse to recalibrate the HVAC system to correct most all problems with the heating and air Oct 2, 2025 · GMC Sierra 1500 Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail - 266 reports. I bought a blend door actuator that I thought would fix the issue once it was installed but after installing it, only warm air blew out of the vents. Nov 18, 2015 · I have the same problem in my '05 2500HD (LLY). They are known for quiting, Causing erratic operation of the AC randomly blows hot air until you restart vehicle Our ‘04 has had this issue since we got it that is progressively getting worse. Ran battery for 2 mins to calibrate, then started the Chevy. The a/c blows hot air from the driver side and cold air from the passenger side. This has happened twice in the last two weeks. Remove the RADIO fuse for 10 seconds and then reinstall the fuse. Well I took it back and he worked on it and thought he got it but he did not. Nov 20, 2017 · Usually one fails and you get one side blowing hot and the other side cold. 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 Sierra 1500. Yes there are 4 actuators. See diagnostics, repair costs, and maintenance tips at RepairPal. I have some heat on the vent that blows towards the driver side window, but not much. and then sometimes it'll start blowing Jun 7, 2010 · Mine did the same thing driver side the first time then a week later the passenger side blows hot air like the heat is on. Discovering that the AC in your GMC has suddenly stopped blowing cool air on a very hot day can be frustrating. If I turn May 8, 2014 · A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. May 3, 2019 · At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. Soemtines it blows cold ario and other times it does not. There are many reasons for poor heating performance in Sierra 1500, which are explained in this article. Blend doors may not be closing properly letting the cold air in. This simple HVAC Reset works for the GMC Yukon, Chevy Tahoe, Silverado, Escalade. Dec 28, 2021 · This 2005 Chevy Silverado AC fluctuates from hot to cold and back. Can someone please Jun 2, 2024 · Air conditioning system that blows cold air on the driver's side and hot air on the passenger side can be due to Blocked Air Vents or Low refrigerant. I’ve tried taking off battery cables and resetting (mechanic suggestion) but this didn’t work. when I first start my truck, the a/c blows cold air. My name is David and I will do my best to help you with your GMC problem. When I turn the airconditioning on it blows cold for a while then the driver's side starts to blow warm/hot air, while the passenger side keeps blowing cold. blower works great and truck is running fine, but no heat comes out. HOW TO FIX / REPAIR HEATER OR AC THATS' ONLY BLOWING ON THE PASSENGER SIDE OF A GM GMC SIERRA YUKON CHEVY TAHOE SILVERADO SUBURBAN 2003 2004 2005 2006 2007 B Jul 13, 2017 · Why Your Car AC Blows Cold Then Warm What to Check If Your Car AC Blows Cold Then Warm I’ve helped countless drivers figure out why their car AC blows cold then warm, and it’s one of the most frustrating problems you’ll encounter in hot weather. What gives? Any ideas guys? Sent from my DROID2 GLOBAL using In this video, I go over an easy DIY for a 2014-2018 GMC Sierra or Silverado fix for ac bloing hot air. Turn the ignition switch to the OFF position. The passenger side remains cool. So, manufacturers switched to small electric motors called actuators to vary the blend/air mix door positions. One of the causes of the temperature difference is low refrigerant level. You can hop in and start it up, turn the A/C and it will start blowing HOT air from both sides. The only way to get it to blow cold again is to shut it off, wait a few minutes and start it back Sep 10, 2019 · So I replaced the battery and now my A/C is blowing hot on passenger side vents. We will cover all possible reasons and will show you the solutions to this situation. I turned them to cold and I noticed the driver side was still blowing hot air. Passenger side continues to work fine when this happens. I Have The Dash Torn Apart And Have The One Above Heater Box Out Asked by Kbrocksieck · 1 ANSWER 1 IMAGE 2004 GMC SIERRA Blend doors regulate cold airflow distribution when stuck or broken, one side may blow hot air while the other side remains cool. This article is broken down into these three sections to help save you time repairing your Sierra’s broken AC system: Not blowing air at all Not blowing cold enough Not blowing cool air Jump straight to Dec 27, 2012 · A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. The dual climate control intermittently is sticking on full hot on the driver side. 05K subscribers Subscribe How to fix driver side stuck on heat 2005 GMC Sierra 5 Common Issues That 2000-2006 Chevy Tahoes Have At 200k Miles What fails on ALL early 2000's Chevy SUV's!? I have a 2006 Silverado 1500 4WD. Now, it won't do it immediately when the a/c is turned on. Jun 14, 2011 · Symptom started very suddenly today. If it's always hot on the other side then the heater core is fine too so that's good news. GMC Sierra Heater Not Working: Diagnosis We would like to show you a description here but the site won’t allow us. Turned AC on full blast, 60 degrees on both dials, blows hot on driver's side, cold on passenger. In this video I explain the most common problem why car vent is blowing uneven air temperature. Feb 19, 2018 · My old actuator blew cold air if the temperature with set all the way to cold, but one click and you were at full heat. The customers complaint is that the Air conditioning intermittently blows hot air. The air conditioner started blowing hot on one side and cold on the other a few weeks ago. but this way works just fine when your ac is not blowing cold on th Jun 27, 2012 · My 2001 Silverado 5. I need to do the e-fans. It has dual zone air conitioning and that's my problem. A malfunctioning AC on the driver’s side can be frustrating, especially during hot weather. Today when I started it the AC was working good, I drove it about 20 miles and then the air started to warm up. 05 LLY, got in the truck today and the driver side is blowing hot air. In this video, I will show you how to diagnose temperature controls. GMC Sierra 1500 – (dennizn / Shutterstock) The most common causes for AC blowing hot air in May 15, 2017 · 2006 GMC Sierra SLE digital climate control. If you stop and turn the truck off, wait a little bit then start it May 14, 2010 · 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. Jan 4, 2020 · I’ve replaced the blend door actuator under the drivers side, per this diagram. Nov 9, 2015 · Well, I have my truck set to LO temperature, and the left driver's side vent blows HOT air. I swapped out the old control I changed last year and still have the same problem. Replacing the Driver Side Blend Door Actuator (ACDELCO 1572972) and reseting the blend doors for the front A/C system. Jan 10, 2015 · Probably not the thermostat then either. I had both passenger and driver side set on hot. Drivers Simple fix for AC not blowing cold on driver’s side but passenger side is blowing cold. A/C Blowing Hot Air My Truck Will Blow Heat Out Of The Driver Side And A/c Out Of Passenger. I have replace a blend door actuator and the problem persists. It may go for days and not have this problem or it may repeatedly do this in one small trip My truck 2006 Silverado 5. We demonstrated if GMC Sierra the A/C AC blows hot on driver side dash vent, but air conditioner blows cold on passenger side what to check on 2012 GMC Sierra but the video may be helpful on: 2006 Oct 12, 2021 · I have a 2006 2500 that likes to only blow hot air on the driver side. If your GMC Sierra’s AC blows warm air but the compressor engages, check for low refrigerant due to leaks, especially near the evaporator or hoses. A burning antifreeze smell suggests a coolant leak, which can affect heater core performance and cabin temperature. With the AC set on 60 degrees on both sides, recirculator on or off doesn't matter, the driver side of the truck blows cold and the passenger side blows hot. Come join the discussion about performance, modifications, troubleshooting, towing capacity, maintenance, and more! 2004 gmc sierra ac blows cold air on passenger side hot air 2004 gmc 1500 a/c blows hot air from driver side and cold fr Have a Gmc sierra 1500 the temp control not working. Causes of AC Works on One Side of Car You might be wondering why AC only works on the driver’s Dec 16, 2009 · Hey guys, Started my truck this morning and let it warm up good. You have to stop and turn the truck off to get it to blow cold again. The blower module is down right beside the blower module. Start the truck "2005 Z71" and hit the #1 seat positioning setting on the door. The passenger side went to cold as it should have. It's a 2004 GMC with the non-digital driver/passenger control levers. A/C blowing hot on driver's side vents and cooler on passenger side. It only takes a few tools and little patience to replace the blend door actuator. I have a Snap On Solus Pro if Feb 28, 2023 · I have a 2004 Silverado 4x4 with duel temp controls. Suddenly hot air started blowing out the air vents only on the drivers Jul 19, 2013 · Reconnected, now the drivers side blows hot air, but the pass side is cold, and the controls for the pass side work. This worked and cold air successfully blew out on the drivers side, however, it caused the right side to now blow hot air. The passenger side seems to always put out at the selected temperatures but the driver side will do the opposite: on max a/c it will blow hot and on max heat it blows cold. There are several causes for AC only blowing hot air in Sierra 1500, which we will cover in this article. Jun 25, 2018 · A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. Scotty Kilmer, mechanic for the last 45 years, shows how to fix a car that is blowing really hot air, even though the AC system is turned on full cold. By HOT I mean it is blowing at what HI temp should be, even when all fans are off, and even when the vent is blowing through to the feet. GMC Sierra 1500 – (photo by GMC) The most common causes that hinders normal operation of air conditioning Jul 20, 2011 · Guys, my a/c is blowing hot air out of my side and cold out of passenger side. Why is your GMC Sierra AC not blowing cold air? This frustrating situation can quickly turn your daily commute or weekend adventure into a sweaty Oct 20, 2022 · The heater in GMC Sierra 1500 ensures comfortable temperature in the passenger compartment when the weather is chilly. Jul 1, 2013 · For about a year now, my a/c was doing funny stuff. Here’s how to fix common GMC AC problems. What these are and what you can do about it, we explain in this article. Jun 7, 2024 · Sierra owners often face the problem of the heater system blowing cold air instead of hot. Follow along as I show Mar 9, 2011 · Ok, so I have a predicament. If I lower the driver side to 60 and raise the passenger side to 90 then I get cold air on the driver side and hot air on the passenger side. There are several causes for AC only blowing hot air in Silverado 1500, which we will cover in this article. Mar 22, 2015 · Ok guys, I know this is a semi-common issue, but was hoping someone could tell me where the actuator is that I need to mess with. Assuming there's a stuck baffle someplace - how would I go about trying to fix this? We would like to show you a description here but the site won’t allow us. Now my dual climate control is blowing hot on one side when the AC is on. i see someone posted above that it could have to do with temperature door? could you tell me a little more about that please? i Sep 16, 2022 · Driving your Chevy Silverado 1500 in hot weather with a broken air conditioning system is not only uncomfortable, it can also be dangerous for your health when sweltering heat builds up in the cabin. Additionally, I had just changed the airflow settings from floor to defrosters and back to straight out right before this issue occurred. This usually happens even when you have instructed the system to produce either cold or hot air on both sides. Take back control of your Chevrolet Silverado's heating and air conditioning with these helpful instructions. Not exactly sure how to do this. So I’m thinking maybe a blend actuator failed or something. Feb 8, 2022 · The blower motor is the central component of the air conditioning system in GMC Sierra 1500, responsible for blowing hot or cold air through the AC vents. It has done this intermittently and will sometimes go away after I shut it off and restart it. Jump to Latest 537 views 2 replies 3 participants last post by shakenfake Jul 15, 2024 5 Jun 13, 2011 · Recently put it in efans and its much cooler! Last summer it wouldnt blow cool air till I was on the highway and now it blows cold air in the driveway. Is the drivers side actuator linked to controling where the air is directed? Sep 16, 2022 · The most common causes for AC blowing hot air in GMC Sierra 2500 HD are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. What is next? Jul 12, 2023 · Good Morning. Apr 8, 2017 · The driver side actuator is under the big black cover under the dash in the foot well area. There are A LOT of issues that can cause your truck’s air conditioner to fail. Unfortunately, your AC is blowing cold only on the passenger side. The passenger side still blows cold. Jun 23, 2015 · Chevrolet Silverado 1999-Present: HVAC Diagnostic Nobody likes driving in an oven or a freezer. Have taken Aug 20, 2025 · Hello, My 2003 2500 HD Silverado has recently started blowing warmer air on the drivers side than the passenger side. I've got a problem with the A/C in my truck. but after its been on for a few mins and I'm driving up the road, the drivers side starts blowing hot air, while the passenger side remains cold. Probably an issue in the vents. Restart the truck, it returns to normal. I replaced the actuator and now it blows likewarm on all settings. If I stop and turn off the truck, then restart it, it blows cold air for a while, but eventually, it starts blowing hot air again, only on the driver's side. When I checked the lines under the Customer: My 2006 Silverado 1500's air conditioning alternates between blowing cold air and hot air, but this issue only occurs on the driver's side two vents. Customer: I have a 2004 GMC Sierra 2500HD with dual a/c. I can get it to blow cool out both sides, but setting is on lowest fan setting and temperature is set all the way down to low. Jul 21, 2009 · When your drivers side blows hot, check your passenger side, it will probably be cold. There are several causes for AC only blowing hot air in Sierra HD, which we will cover in this article. Is the blend door? If so, where is it located on a 2010 Silverado 1500 Z71?. Before it got stuck on just hot air it used to pulsate between cold and hot. GMC Sierra 3500 HD – (betto rodrigues / Shutterstock) The most common causes for AC blowing Jun 19, 2009 · After several months of hot air blowing on the drivers side and cold on the passenger side and trying ALL the great tips (none of which worked) I got it. I've tried all the tricks of pulling fuses and disconnecting the battery none of those things seem to work. I have done a lot of reading and it A/C only blows hot air, fan speed dial works fine as does dial to select face vent, foot, defrost etc. However the passenger side works as it should. In today's video we take a look at a 2005 GMC Sierra pickup truck with a 5. I ended up taking it off and throwing some vice grips on the door itself and made it manual operation. Jan 7, 2023 · Is your AC only blowing cold on passenger side, and leaving the driver hot and uncomfortable during the summer months? You need to read this article to understand the problem You switch on your air conditioner while driving on a hot day. Relearn the actuatorAnother option / We demonstrated if GMC Sierra the heater blows cold on driver side dash vent, but heater blows hot on passenger side what to check on 2012 GMC Sierra but the video may be helpful on: 2006 GMC Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It recently starting blowing hot air when the a/c is on but it only blows hot air on the drivers side. Its not blowing via fan, but does trickle out, and even moreso the faster down the road I am going. A low refrigerant May 9, 2018 · A faulty blend door actuator is the most common cause of your AC blowing cold on one side and hot on the other Car makers used to rely on cables to change the position of the blend door to regulate the amount of heat. From what I learned, in the diagram above, #4 that shows on the bottom is the drivers side temp actuator, even though it is located on the passenger side. I don’t have a check engine light on. Common culprits include a defective blend door actuator I have a 2006 GMC Sierra Z71. I’m having a few problems with it but let’s start with one. i am also having a heat problem with my new (to me) 2002 silverado 1500. If you ruled out that you do not have a freon leak or AC Compressor issue, this is most Jun 4, 2015 · Chevrolet Silverado 1999-2006: Why Do My Vents Blow Only Hot or Cold Air? The Chevy Silverado climate control system uses several different components that come together to either cool down or heat up the cabin. 2006 2500 hd blows hot air on drivers side cold on passeng side when ac is on what where is accuatd er for ac locatedHello and thank you for using Justanswer. The passenger side blows hot. Dec 23, 2010 · Ok, I replaced the battery in my 04 and when I did i started having issues with my drivers side A/C being hot while the passenger side is blowing cold. Fortunately, troubleshooting why your car AC blows cold then warm isn’t as complicated as it Jan 30, 2025 · Curious about why your AC blows cold driver side but hot air passenger side? Learn the reasons why. I have tried to reset the actuator with the disconnect the battery Oct 3, 2022 · If your GMC Sierra’s AC system is not working, it can be uncomfortable and downright dangerous on a hot day. My 2004 Chevy Silverado 2500hd is blowing hot air out of AC vent on passenger side only. Why Your GMC Air Conditioner Might 2004 GMC Passenger Side Heat Control Blowing Cold Air Issue Dual-zone climate control systems often face blend door actuator failures and temperature sensor malfunctions. Aug 12, 2021 · We had to start with this issue because it is the most common issue that Silverado owners experience. a/c is also fine. I've already had to replace the compressor twice and the condenser once and like many other owners aggravated at this trucks climate control. Includes the re-calibration procedure! Other models similar YUKON, SILVERADO, TAHOE, ESCALADE. Also, try turning the temp to max then back to minimum. I moved the temp selector up and down and nothing changes. If I turn off the truck completely and restart it, the AC blows cold air again. May 22, 2023 · What are the common causes and repair options if the air conditioner blows cold air on one side and warm on the other in a car? Aug 27, 2018 · My a/c is only blowing cold out of the passenger side and HOT on the driver's side. If the heater has stopped working in your Sierra, this process has failed in one way or another. 2. A common problem and I know I need to reset the CC now. Remove the plastic cover under the dash Jun 2, 2014 · On some 2003-2006 model year Chevrolet Avalanche, Suburban, Tahoe; GMC Yukon, Yukon XL; and 2003-2007 model year Chevrolet Silverado and GMC Sierra vehicles equipped with a manual heating, ventilation, and air conditioning (HVAC) system (CJ3) or heavy duty heater (C42), the interface between the electrical terminals of the relay resistor module 2004 GMC Blend Door Actuator Replacement, Calibration & Comparison How to change the headlight assembly in the Adventures Bound truck 2015 Chevy Silverado Blows cold drivers side with heat on Chevy Silverado. After driving for 10 mins it blew only cold air. The driver side works fine the passenger side blows hot air when it should be blowing cold air. Drivers side blows cold. If the refrigerant level is low, the system won’t be able to cool the air effectively. I checked my a/c freon and was good there Sep 16, 2022 · Driving your GMC Sierra 1500 in hot weather with a broken air conditioning system is not only uncomfortable, it can also be dangerous for your health when sweltering heat builds up in the cabin. We’ll cover what can cause your car’s AC to only blow hot or cold on one side, what other symptoms you might hear, and how to diagnose the blend door actuator Jan 10, 2016 · Had my battery unplugged/died/replaced over the weekend. does nothing for mixing air temps. Jul 29, 2017 · Why does my a/c suddenly start blowing hot air from the driver side vents? 2006 GMC Sierra 1500 Asked by kruegerc91a0bf in Duluth, GA on July 29, 2017 Jun 5, 2025 · Is your GMC’s air conditioning blowing warm air or not working properly? Before calling a mechanic, you might be able to fix the problem yourself with a simple reset. I replaced the blend door acuator below the glove box area, no change. It is blowing cold air but once on the way home it started blowing hot on drivers side on the floor. As for the air not blowing, you probably have a Blower Control Module ( used to be called blower resistor) bad. Other times it blows ice cold air sitting at a stoplight, other times its better to roll the windows down. belmr evprm klnga iphv ailmwmx nlmtnrk keend pbee yvlj gmkywfn bmxf yyuxy doczwh zssd odotv