Gmc acadia ac blowing hot air

We have a 2014 Acadia and previously owned a 2008 Acadia. Both have had the exact same problem with the AC. It begins with a hissing sound around 50,000 mi, stops blowing cool air and results in a leak in the evaporator coil. The repairs are approx $1400. I’m currently in a battle over repairs with GMC because this seems to be a …

Gmc acadia ac blowing hot air. May 7, 2012 · This was supposed to have been fixed last year in April 2011 and July 2011. Now its continuing as iI lost cold air today looks that this is a common issue on this forum. I found that this is a recall on 2010-20114/2011 Acadia's. EQUIPMENT:ELECTRICAL:AIR CONDITIONER-. Vehicle: 2010 GMC Acadia. Nature of Defect: EQUIPMENT:ELECTRICAL:AIR CONDITIONER.

L. ls973800. 1125 posts · Joined 2010. #2 · Jul 23, 2012. Service manual says behind the right rear quarter trim panel. Remove the cover and you should see the motor sticking out about mid way up. Looks like there are only 3 screws/bolts and one electrical connection. Should be pretty easy and straight forward to do.

30 posts · Joined 2018. #1 · Jul 26, 2018 (Edited by Moderator) The rear ac does not blow cold. Ac pressures within spec. The rear temp door/actuator operates properly. At 90 degrees outside, a thermometer in the front middle left air vent air blows at 51.6 degrees (within gm spec). The rear left air vent blows at 77.7 (out of gm spec).Needless to say we are not happy right now. Hi Killer11, I’m sorry to hear your Acadia’s AC is experiencing hissing noises and that the dealership was unsuccessful in fixing it. If you would like, you can send us a private message with you VIN, current mileage, full contact information and involved dealer.Read through this thread: Temperature Gauge drops and A/C stops blowing cold air. The help you seek may be in that discussion.AC blowing hot, GMC Acadia. Asked by Boomer403 Jul 06, 2018 at 11:15 AM about the 2010 GMC Acadia SLE-1 FWD. AC is blowing hot, already tried recharging. When car idles and AC turned on, RPM's have a slight surge every few seconds. Not sure if problem is. compressor itself or a relay/fuse.The driver side vents are blowing cool (not cold) and the passenger side is blowing HOT. 3. I took it in for an oil change (at GMC) and asked the guy to look at it. He said it was the cabin air filter causing the problem, and wanted $50 to replace it. I laughed inside for 2 reasons. One, I knew it wasn't the cabin air filter causing the problem.Jan 4, 2020 · I’ve replaced the blend door actuator under the drivers side, per this diagram. This worked and cold air successfully blew out on the drivers side, however, it caused the right side to now blow hot air. I figured this would be calibration, so I popped the HVAC b fuse for 2 mins. Ran battery for 2 mins to calibrate, then started the Chevy.

There are many possible causes for an AC not working in a 2017 GMC Acadia. These include: • Low refrigerant levels due to a leak. • A blocked expansion valve, causing the air conditioner to freeze up and stop functioning. • An electrical issue, such as a blown fuse or failed compressor clutch relay switch. • Blocked condenser fins ...The GMC Acadia air conditioner light blinking indicates that there is a problem with the system. The most likely cause of this issue is an electrical fault in one or more air conditioning system components, such as the compressor, condenser, evaporator, or blower motor. A faulty relay switch or other wiring problems may also cause it.Anybody figure it out. My 2014 GMC Acadia Just started do the same exact thing!! Temp gauge drops to straight down, Fan blowing full and loud, A/C still Blows but Not cold and the recirculation button …9 posts · Joined 2017. #1 · Jan 9, 2017. I had the battery replaced on a 2011 GMC Acadia today, after replacement the driver's side is blowing cold air, while the passenger side is blowing warm air. I have tried resetting or calibrating the actuators by removing the battery cables for 10 minutes, reconnecting, turning on the car (I heard two ...Why is my 2011 GMC Acadia blowing hot air on the drivers side and AC in the other areas of the car? It is all supposed to be AC 99 degrees today and I'm getting hit with heat! ... I have a 2010 GMC Acadia that is having Ac problems. The Ac blows cold on the passenger side and the rear, but hot on the driver's side.SOURCE: Hot air blows but cools down in 15-20 seconds. You likely have a restriction in the heater coolant hose circuit - perhaps a coolant control valve not fully opening, or a kinked hose. Insufficient coolant volume is flowing to keep the heater core hot. Try back flushing the heater core system with a garden hose to check flow.

Hot air balloon adventures offer a unique and breathtaking experience that many photography enthusiasts dream of capturing. The stunning vistas, vibrant colors, and sense of wonder...Sep 4, 2018 · 6 posts · Joined 2018. #1 · Sep 4, 2018. 2013 Acadia (78k miles) overheating. Here are the symptoms: 1) Engine Overheating/Turn off A/C message flashing. 2) Engine temp in traffic with A/C on runs close to 250. 3) Engine temp without A/C on runs around 240. 4) Turning the heater on brings the temp down to 220-230. 2011 Acadia Denali FWD: Driver side HVAC blowing hot air, coincidentally started right after a dead battery incident and jump starting the vehicle. As I read in different posts here, I replaced the actuator but as soon as I put the electrical connector on the new actuator, it rotated immediately to the hot side, regardless of temp setting.Mar 29, 2017 · Not drive or just shrivel up and die. The hissing is almost certainly a leak. The system has a low pressure switch that prevents the AC unit from turning on if the refrigerant pressure drops too low. On the Acadia it most often is an expensive repair. Need to find the leak, replace the offending parts the recharge the AC. 2012 GMC Acadia Rear A/C Blows Warm - FIXED!!! 2012 GMC Acadia Rear A/C Blows Warm - FIXED!!!According to About.com, if your air conditioner keeps blowing fuses or tripping circuit breakers, it is because the appliance is trying to draw more current than the fuse or breake...

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Jun 8, 2016 · HELP ME GET TO 1,000 SUBS!!!!!SUBSCRIBE HERE https://www.youtube.com/channel/UCmfLHxPyvu9lZVnHww11H4ABECOME A PATRON! LEAVE A DONATION :)https://www... 2014 GMC ACADIA. V6. 80,000 MILES. Driver side blows cold while the passenger side and rear blow hot. My blend door looks to be actuating normally. Another thing I noticed, the driver side does blow hot sometimes and then I recharge the A/C line then it's back to normal for a few days. Then it's repeats.The lower high side pressure may be from an undercharged system and the TXV is keeping the low side at 30 PSI. The old systems used a sight glass to charge the systems. Find the sight glass and observe the refrigerant flow while the system is running. If the sight glass is clear liquid the system is fully charged.I have a 2019 GMC Acadia SLT-1 V6. I have recently had my car at a dealership for another issue out of my control and was asked about the message I have seen pop up occasionally and go away. "Steering Assist Reduced Drive With Care". When that code does come on my fans run all the time and high and my AC doesnt work and …Open the hood of your Acadia. Check which type of refrigerant your vehicle uses. This information is typically located under the hood and/or in the owners manual. Start the engine. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Remove the cap from the low pressure service port labelled L, and connect the AC ...taver91 answered 4 years ago. I would have the system leak tested. Instead of pulling a vacuum to see if there is a leak try a different method. Have a shop put some …

Not drive or just shrivel up and die. The hissing is almost certainly a leak. The system has a low pressure switch that prevents the AC unit from turning on if the refrigerant pressure drops too low. On the Acadia it most often is an expensive repair. Need to find the leak, replace the offending parts the recharge the AC.Bought if for $13,500 with 3620mi on it. Can see my build here: 2019 GMC SLT1 V6 AWD Salvage rebuild!! So the problem was the dealership sold me the AC line that had the R134A port on it. I needed the AC line with the 1234yf port. When I installed the wrong line the first time there was one seal I reused.2007-2008 GMC Acadia 2007-2008 Saturn Outlook The following diagnosis might be helpful if the vehicle exhibits the symptom(s) ... My front passenger side HVAC started blowing warm air intermittently. But around two weeks back it started blowing warm air every time i switched it on.Needless to say we are not happy right now. Hi Killer11, I’m sorry to hear your Acadia’s AC is experiencing hissing noises and that the dealership was unsuccessful in fixing it. If you would like, you can send us a private message with you VIN, current mileage, full contact information and involved dealer.When I got my 2012 Acadia that Friday evening i noticed thr passenger front side vents blowing hot air. It's humid Arkansas summer at the time. Called Monday to report issue. They said it was just a coincidence that the blend door actuator was out. 7 yr. ride starting to have things go out.I have a 2012 GMC Acadia. Denali package. I have an issue with rear AC blowing warm air while front is cold. If I set heater on high temperature I get very hot air through them butt when I set it on A … read moreCar AC Blows Cold on One Side and Hot on the Other - Diagnose and Fix. Description. 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. Author. 1A Auto Team.Sep 16, 2022 · The most common causes for AC blowing hot air in GMC Acadia 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. Less common causes are clogged expansion valve or orifice tube ... When we perform an A/C repair on your 2014 GMC Acadia, we’ll also do an A/C evacuation and recharge. To do this, one of our technicians will remove the refrigerant in your A/C system (if there is even any left to remove). Then, they’ll use GMC’s specifications to evacuate the system. The A/C system is recharged with new refrigerant and ...When the air conditioner in your 2013 GMC Acadia starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon.May 29, 2020 · GM did make this is very easy to do. Just find the fuse for it underneath the instrument panel on the passenger's side, remove it, wait about a minute or so, then put the fuse back in. Then, turn on your car and the AC will be running. Let the AC run and don't touch anything for 5 min or so. The system will recalibrate the blend door motors.

There are many possible causes for an AC not working in a 2017 GMC Acadia. These include: • Low refrigerant levels due to a leak. • A blocked expansion valve, causing the air conditioner to freeze up and stop functioning. • An electrical issue, such as a blown fuse or failed compressor clutch relay switch. • Blocked condenser fins ...

Passenger side blowing heat when A/C on. We just purchased a 2011 GMC Acadia Denali used from our local BMW Dealership. Day two of owning our vehicle we decided to go on a road trip. When trying to use the air conditioner we noticed that the air conditioner works everywhere throughout the vehicle EXCEPT on the front …2011 GMC Acadia. Hot air blowing in front right passenger side when AC is on .Here are the codes we were given : B0423-04 and B0228-04.We are trying to get a clear understanding on what parts we need and the part numbers. ... 2012 gmc acadia denali the ac is blowing hot air, i checked.2010 gmc acadia. duel hvac system. will not blow hot in the front butFront turn signal change gmc acadia limited (2017-2017) Common issue air conditioning leak 2011 gmc acadia 3.6 . meinekeGmc acadia ad18 4e07. Check Details Gmc acadia air conditioning cinnaminson. Acadia gmc refrigerant add port low pressure conditioning …Then start it up and allow it to run and cycle. Do this 3 times. If the issue remains then you need to replace the actuator. The code B0413 is a feedback circuit code and confirms this. The B0412 does not show as a valid code for the vehicle. The actuator is not hard to replace, it resides above the fuel pedal on the drives side of the heater case.2008 GMC acadia HVAC is working blowing cold air. HVAC is blowing cold air but no heat. Well AC cold wasnt working - Answered by a verified Chevy Mechanic. ... No, and this us a 2023 Tahoe, first summer. 2 days ago temp outside was 99°, next time I drove it, ac in drivers side blowing hot air. ...My 2012 GMC Acadia just stopped blowing hot air in the front vents. Certified warranty just went out as well they are telling me! Any suggestions as to what to check? Save Share. ... 2007 GMC Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors.2016 gmc Acadia cavender with 3.6l ac not working, compressor is working and everything is normal but blowing hot air - Answered by a verified Auto Mechanic. ... HiIntermittent heat -I have a 2011 GMC Acadia I had the the AC serviced 8 months ago (new compressor Ect 650.00 worth of work) ...

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I have the exact same symptoms as other owners. AC not cooling at full power and hot air blowing in parts of yhe vehicle. Mos owners have hole in air lines caused by some sort of rubbing, or evaporation coil/core issues costing anywhere between $1,500-2,500 to fix.Jun 18, 2020 ... Comments54 ; Find a blown fuse in 3.7 seconds. Baldwin's Bowtie Garage · 666K views ; 2013 Buick Enclave, Rear Blower Works Sometimes. Sparky's ...Imagine floating gently above the world, with breathtaking views stretching out as far as the eye can see. A hot air balloon ride for two offers an experience like no other, combin...Anybody figure it out. My 2014 GMC Acadia Just started do the same exact thing!! Temp gauge drops to straight down, Fan blowing full and loud, A/C still Blows but Not cold and the recirculation button …2013 gmc acadia rear a/c blower motor 2008 hvac blowing front acadia gmc Acadia gmc ac line recharge. Air side hot acadia ac blows gmc driver vents. The rear heating & cooling is not working on my 2014 gmc acadia slt awdPassenger and rear a/c blowing hot Had alternator replaced on 2012 gmc acadia; now the ac blows hot …Decide on the temperature that’s right for you. Most people choose something similar to their home thermostat setting, such as 72°F. Set the climate system to that temperature. Press the AUTO button. This may be found on the center stack, within the climate app on your infotainment screen or in both places.Buy Gmc Acadia Condenser Assembly - Air Conditioning (A/C). 2.5L, 3.6L. 3.6 liter. Acadia. Acadia; 2 Bad, Blowing, Collision - OEM Gmc Part # 84129805 (22999490 ... or get damaged in a collision. If the air conditioning in your GMC Acadia is blowing warm, let our trained technicians inspect and diagnose the fault. What This Fits; Product Types;Decide on the temperature that’s right for you. Most people choose something similar to their home thermostat setting, such as 72°F. Set the climate system to that temperature. Press the AUTO button. This may be found on the center stack, within the climate app on your infotainment screen or in both places.87 today and no cold air - just hot air blowing into the car. The AC was working last weekend but now mine is doing the same thing ... Purch May 2012<br />2007 GMC Acadia FWD SLT2, Deep Blue, Titanium Leather, 2Row Bench, DVD, HUD. -- Ord Feb 07, Delivered Apr 07, Traded May 12<br />2008 White Mustang- V6 Pony Package, ...In this Car Repair video I add Air Conditioning Refrigerant to the Air Conditioning system on a GMC Acadia. This is a pretty easy DIY repair for an AC syste... ….

GM did make this is very easy to do. Just find the fuse for it underneath the instrument panel on the passenger's side, remove it, wait about a minute or so, then put …On our 14' Acadia at 44,000 miles last year, the AC started blowing hot air. Cabin filter had all ready been changed. Freon was at 1.2 lbs, they checked the rear evaporator and okay. Recharged the AC with dye and come back in 2 weeks for a check. After 2 weeks, no leaks and still nice cold air. I went back again after to weeks and said all was ...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.Our GMC Acadia Denali's aircondtioner stop blowing cold air. We found out that GMC has had a problem with that since 2017. We have to disconnect our battery and then reconnect it to reboot the computer. Then our airconditioner will blow cold air. We have to do this every few days. The dealer said it would cost around $500.00 to fix it.2008 GMC acadia HVAC is working blowing cold air. HVAC is blowing cold air but no heat. Well AC cold wasnt working - Answered by a verified Chevy Mechanic. ... No, and this us a 2023 Tahoe, first summer. 2 days ago temp outside was 99°, next time I drove it, ac in drivers side blowing hot air. ...Is your car only blowing cold on one side of the car? If so it may be a faulty blend door actuator. This simple fix only requires the removal of 3 T15 torx h...2012 gmc acadia denali the ac is blowing hot air, i checked. 2012 gmc acadia denali the ac is blowing hot air, i checked the charger and it seems to be good, but i did notice the compressor doesnt seem to kick on. ...9 posts · Joined 2017. #1 · Jan 9, 2017. I had the battery replaced on a 2011 GMC Acadia today, after replacement the driver's side is blowing cold air, while the passenger side is blowing warm air. I have tried resetting or calibrating the actuators by removing the battery cables for 10 minutes, reconnecting, turning on the car (I heard two ...Feb 4, 2021 ... Rutilo Rueda•35K views · 13:20. Go to channel · AC Blows Hot on Driver Side Air Vents 10 GMC Acadia (HD). Leekautorepair•392K views · 8:31. Go&... Gmc acadia ac blowing hot air, If your GMC Acadia’s AC isn’t working properly, you may need to reset the system. To do this, first turn off the AC by pressing the A/C button on the dash. Next, disconnect the battery for about 30 seconds. Once you reconnect the battery, press and hold the A/C button for about 5 seconds. This should reset the system and hopefully get …, 2nd Gen Acadia AC hot on driver side. So, this seems to be a common issue for Acadias. A/C blows at outside air temp on driver side while passenger side blows at control setting temp. My understanding is this is usually due to the driver side blend door actuator not working. I can find info and videos for 1st gen Acadias on how to replace this ..., Mar 28, 2016 · rpdrake Discussion starter. 5 posts · Joined 2015. #1 · Mar 28, 2016. My 2012 GMC Acadia just stopped blowing hot air in the front vents. Certified warranty just went out as well they are telling me! , Hot air blowing out of the top vents in the back, but ice cold out of the front vents in the dash. After it ran for another 5-10 minutes or so it was cold in the back too. I am not sure, but maybe the top vents aren't insulated well from the roof and the heat from the sun just bakes the vents?, 2007-2008 GMC Acadia 2007-2008 Saturn Outlook The following diagnosis might be helpful if the vehicle exhibits the symptom(s) ... My front passenger side HVAC started blowing warm air intermittently. But around two weeks back it started blowing warm air every time i switched it on., Why my acadia its blowing hot air when a/c is on. 1 Answer. eric. Contributor 1 Answer. Posted on Jun 09, 2014. Several reasons why ac not blowing cold. Most …, 6 posts · Joined 2018. #1 · Sep 4, 2018. 2013 Acadia (78k miles) overheating. Here are the symptoms: 1) Engine Overheating/Turn off A/C message flashing. 2) Engine temp in traffic with A/C on runs close to 250. 3) Engine temp without A/C on runs around 240. 4) Turning the heater on brings the temp down to 220-230., Rear AC blows warm air. I purchase my Acadia a couple of weeks ago and while traveling with some friends I used the rear ac and the air that it was blowing was like outside temperature. It was about 80 degrees outside and my ac temperature settings were at 65. You could really feel the difference between the front and rear., #1 · Jun 30, 2021. I have A 2016 Acadia that blows hot air when the ac is on. After driving for 15 mins the temperature gauge drops down and the AC starts to blow can anyone help me with This problem. 2016 GMC Acadia. Like. Sort by Oldest first. speleos. 23754 posts · Joined 2007. #2 · Jun 30, 2021., If you’re like most car owners, you rely on your vehicle’s air conditioning system to keep you cool and comfortable during hot summer days. However, when your car AC starts blowing..., The lower high side pressure may be from an undercharged system and the TXV is keeping the low side at 30 PSI. The old systems used a sight glass to charge the systems. Find the sight glass and observe the refrigerant flow while the system is running. If the sight glass is clear liquid the system is fully charged., Jun 12, 2021 ... ... AC for 3 zones, in this case, the driver side was blowing hot air at all times and the passenger side is getting air conditioning it was ..., The driver side vents are blowing cool (not cold) and the passenger side is blowing HOT. 3. I took it in for an oil change (at GMC) and asked the guy to look at it. He said it was the cabin air filter causing the problem, and wanted $50 to replace it. I laughed inside for 2 reasons. One, I knew it wasn't the cabin air filter causing the problem., Let’s be honest— in hot, humid weather, it doesn’t take long to feel like you’re trapped in a sauna, and you’ll do almost anything to get some relief. The first time you install a ..., The most common causes for GMC Acadia AC not blowing hard enough are clogged cabin air filter, dirty evaporator coil, and frozen evaporator coil due to low refrigerant. Less common causes are dirty or sluggish blower motor and faulty mode door actuator. 1. Clogged cabin air filter. Dirty AC filter is the leading cause of weak AC airflow …, The blower motor is the central component of the air conditioning system in GMC Acadia, responsible for blowing hot or cold air through the AC vents. 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 Acadia. GMC Acadia – (Art Konovalov / Shutterstock), 2015 Denali Acadia A/C blows hot air. Most of the time the interior A/C light flashed 3 times then went off. Checked the low pressure port at it read around 35 PSI …, Jul 25, 2018 ... Get The AC Pro recharge kit here. https://amzn.to/43PaM0t In this video I add Air Conditioning Refrigerant to the Air Conditioning system on ..., Passenger side blowing heat when A/C on. We just purchased a 2011 GMC Acadia Denali used from our local BMW Dealership. Day two of owning our vehicle we decided to go on a road trip. When trying to use the air conditioner we noticed that the air conditioner works everywhere throughout the vehicle EXCEPT on the front passenger …, We have a 2014 Acadia and previously owned a 2008 Acadia. Both have had the exact same problem with the AC. It begins with a hissing sound around 50,000 mi, stops blowing cool air and results in a leak in the evaporator coil. The repairs are approx $1400. I’m currently in a battle over repairs with GMC because this seems to be a …, The blower motor is the central component of the air conditioning system in GMC Acadia, responsible for blowing hot or cold air through the AC vents. 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 Acadia. GMC Acadia – (Art Konovalov / Shutterstock), Cold air only on passenger side. Okay, a little background on my 2011 Acadia; we purchased the Acadia new with six miles on it. We have had no issues at all until about three weeks ago, when the passenger side started blowing cool air when the heater was turned on. Last weekend the drivers side and rear heaters quit working while …, Gmc Acadia Ac Blowing Hot Air. 01 Jan 2024 by Fatima Fritsch IV. 2007 2018 gmc acadia ac evaporator blower housing rear side factory r-8 Acadia gmc refrigerant add port low pressure air freon 5l conditioning fill system 2007-2012 gmc acadia ac heater climate control 25932036 53920., B0228 is the same description as above, but points to the recirc door actuator. 15920864 is the temp door actuator, from GM it retails for 69.72. 15920864 is the inlet door actuator, it retails for 108.96. Temp door actuator should be about an hour of labor, air inlet actuator will probably be about 3 hours labor., Is your car only blowing cold on one side of the car? If so it may be a faulty blend door actuator. This simple fix only requires the removal of 3 T15 torx h..., 23754 posts · Joined 2007. #2 · May 18, 2020 (Edited) It's an "either, or" situation. You'll have to charge the system and make sure the compressor functions properly. Then, check for leaks. You'll find a lot of information on the forum about possible causes of an A/C malfunction and where the most common of them occur., I have the exact same symptoms as other owners. AC not cooling at full power and hot air blowing in parts of yhe vehicle. Mos owners have hole in air lines caused by some sort of rubbing, or evaporation coil/core issues costing anywhere between $1,500-2,500 to fix., Then start it up and allow it to run and cycle. Do this 3 times. If the issue remains then you need to replace the actuator. The code B0413 is a feedback circuit code and confirms this. The B0412 does not show as a valid code for the vehicle. The actuator is not hard to replace, it resides above the fuel pedal on the drives side of the heater case., Feb 4, 2021 ... Rutilo Rueda•35K views · 13:20. Go to channel · AC Blows Hot on Driver Side Air Vents 10 GMC Acadia (HD). Leekautorepair•392K views · 8:31. Go&..., The driver side vents are blowing cool (not cold) and the passenger side is blowing HOT. 3. I took it in for an oil change (at GMC) and asked the guy to look at it. He said it was the cabin air filter causing the problem, and wanted $50 to replace it. I laughed inside for 2 reasons. One, I knew it wasn't the cabin air filter causing the problem., GMC Acadia. The most common reasons a GMC Acadia 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. Climate Control Electrical Issue., Set your desired temperature. The system is designed to adjust the fan speed, air flow distribution and delivered air temperature to quickly and efficiently reach and keep the interior of your vehicle at the temperature you set. The A/C button will light up. NOTE: This doesn’t necessarily mean the air conditioning is on — it just means it ..., Passenger side blowing heat when A/C on. We just purchased a 2011 GMC Acadia Denali used from our local BMW Dealership. Day two of owning our vehicle we decided to go on a road trip. When trying to use the air conditioner we noticed that the air conditioner works everywhere throughout the vehicle EXCEPT on the front …