The output voltage on the multimeter should read around 12 volts. In any case, it is advisable for laypersons to visit a workshop as you can easily do more damage to your vehicle, especially to the electrical system. When I put my hand on the blower under the dash it didn't feel as though it was working even though the rear AC was on. To know if your vehicles motor is faulty, you need to connect an amp meter to the blower motors power wire. I'm dumbfounded. Immediately you are done with this, you will notice a better performance of your vehicles ventilation system. The dealer said it was a modulator. Anytime there is a problem with the temperature of the air conditioning system, it could be a problem with the blend door actuator. Just have it refilled and you can drive with pleasant temperatures again. Meanwhile, the car makes and model can also impact the cost of repair. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend door actuator, or a defect in the climate control unit. Tires? In other cases, the front AC may stop working with only the back AC working. 1. Replaced everything and was good to go. Once you confirm it, kindly remove the blown fuse and replace it. Do you still sweat while driving your Chevy Tahoe? So, if your cars AC is not cooling as expected, ensure to check the air filter, among other related components. I have a brand-new battery and alternator in it. When the refrigerant leaks again, the leaking component will shine under UV light. The mode doors are operated by a small electric motor/actuator. you can use some small alligator clips and apply power and ground to the male pins on the I tshold tell you on the truck there should be a sticker underhood with charge amount. The blend door actuator may require recalibration after replacement. Proper diagnosis is the first step to fixing any of the problems above. If there isnt enough oil added with the refrigerant or to the compressor itself if it was replaced, the internal components of the compressor will wear out and cease to function. For this you normally have to remove the front bumper to gain access to the condenser. Hi in this video I will show you how to confirm the fix on you vent no blowing air Larger leaks may already be heard or you can find them with a leak detection spray. Having the same problem, Front blower goes off with AC and rear fan still on when Idle for more than 15 mins and outside temp above 85 degrees or so. In the following guide we will show you what to check for depending on the If the fuse is blown, replace it with a new one with the specified amp rating. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. symptoms of Last Year The Rear A/c Unit Stopped Blowing Cold Air And Now The Front Side Has Also Quit. If the pipe coming out of the evaporator is cold, then it's likely a blend door problem, probably an actuator. It is not only responsible for pumping the refrigerant throughout the AC system but also converting the refrigerant from gaseous state to liquid state as it passes through the condenser. I noticed the heater core door actuator was working but the plastic cam was broken. Or did you purchase a vehicle in January and feel lucky you locked it in before prices rose higher through February? The vents for modern vehicles are controlled by three or four electrical actuator motors, which can be adjusted by the climate control module; this electronically regulates and control the air ventilation system in your vehicle. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in Chevy Tahoe. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. Even after the a/c was recharged. If the condenser is damaged or blocked, it can cause your car to overheat while the AC is on due to inadequate air flowing to the air . 0 answers. Front Stabilizer Bar Link replacement 96 Tahoe two door. Most diagnostic devices then ask for some information about the vehicle. Checked the pressure on the system, around 40 which is half ambient and should be correct (also matches pressure on my brothers tahoe which works correctly). Kindly contact an expert auto technician to do the replacement. If there is no air flow or reduced air flow from the vents on your Chevy Tahoe, bad blower motor could be the culprit. If the compressor comes on with the switch connector jumpered, then either the switch is defective OR the refrigerant system is low on freon. It's the passenger side vent for the middle passengers. In order to find leaks in the air conditioning system, a leak search is carried out in the workshop using forming gas even the smallest leaks can be detected. 462.00 to get it fixed. 2007 FORD EXPEDITION; 140,000 MILES; Recently, the front ac will stop working. (Merged). In some cases, the dust build-up may be protruding from the vent. Therefore, if you have a faulty cooling fan, it will impact the condenser negatively and result in some sort of HVAC system malfunction. Because it cost nothing but time. So, all of them must be inspected when diagnosing poor air flow. Are you currently in the car market and getting discouraged by high prices? Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. You can use power washer for cleaning, but make sure that its at low pressure setting, as high pressure can easily damage the delicate fins on the condenser. Home Troubleshooting Chevy Tahoe AC not working causes and how to fix it. For this purpose, this article is strictly focused on the factors that can cause your vehicles air vents to stop functioning and how to fix some of these problems with a few easy steps. The AC blower motor in Chevy Tahoe needs electricity to work. The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. Ugh. Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. Tom is online now Related Chevy Questions Reconnect and see if the behavior changes. Always remember that delay can make a problem escalate severely. Do you think it is 100% the BCM or should I really do an in-depth check of that ground? However, if you already have a bad air conditioner compressor, all you have to do is simply replace the component. Pro Tip It is imperative the resistor module is checked. Make sure to glue and seal the darker piece (air cap) to the lighter (headliner) Sep 2, 2011. Although most of the dirt and other particles in the air are filtered by the cabin air filter, but some particles do escape and can cling to the fins of the blower cage. Welcome to rxmechanic.com. If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. 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A clogged or leaking condenser can also be the reason for air-conditioning not working properly on your Tahoe. Some filters are found under the bonnet of some vehicles, while some are located under the vehicles passenger seat. The rear work fine. This motor is a fan located behind the dashboard responsible for blowing the air through the vents. Does anybody know if there are 2 separate blower motors for the front and rear AC blowers? The sound is something like a light tapping on the door and it happens when you turn on the air conditioning system or turn off the engine. When your cars air conditioning systems refrigerant is low, it will automatically alter the temperature circulation from one end of the dashboard to the other. Simultaneously my oil/fuel/engine temperature/ and voltage gauges stopped working, AC stopped blowing cold, lock/unlock and power windows failed. Check the owners manual of your Tahoe or the fuse box cover to find the exact location of the fuse for the blower motor. It may not display this or other websites correctly. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and may need recharging after every few years. I noticed when I turn the blower switch to the off position the light on the ac button itself flickers and if I wiggle the switch around the lights flash as if their is a short. The screen and all functions appear to be working, but the fan will Ask an Expert Car Questions Chevrolet Repair 1 1 Tom, ASE Certified Technician 30,957 Satisfied Customers Qualified to repair all makes and models. There are two ports in the air conditioning system of Tahoe. It is a 2001 Chrysler Town and Country. Just like with low refrigerant, the AC in Tahoe will blow warm air only if the AC system is overcharged with refrigerant. If the result of this process doesn't fix the problem, move forward to the next step. A clogged air intake system may be the reason why your cars air conditioners front vents are not blowing out. The refrigerant pressure is affected by the outside atmospheric temperature. The cabin air filter captures most of the dirt or other airborne particles, but some particles escape and can get lodged on to the evaporator. Check which type of refrigerant your vehicle uses. Nothing happening in back. Someone is going to have to test while following a wiring diagram. Therefore it is recommended to do this at a workshop. A broken compressor is usually irreparable. Otherwise no problems. However, due to excessive dust or dirt build-up, the air filter can be clogged over time, resulting in several malfunctions. There are many ways to test a resistor, but the most easiest and basic method is to check the voltage at the electrical connector on the blower motor with a multimeter. Yes No Monday, June 27th, 2011 AT 2:24 PM 19 Replies FACTORYJACK EXPERT Aside for checking the system for fault codes, I would suspect a faulty blend door actuator, or faulty expansion device. If the blower motor in your Tahoe is not spinning fast enough either due to an internal defect or due to a fault in the resistor/control module, the AC cooling performance will be degraded due to reduced air flow. If this filter becomes blocked or clogged as a result of irregular vehicle maintenance, it will slow down or might stop the flow of air coming out from the vents. Dealer or do it myself. Recharged With More Air Conditioning Problem If the condenser is damaged or blocked, it can cause your car to overheat while the AC is on due to inadequate air flowing to the air conditioner. Remove the blower motor, typically located under the passenger side dashboard, and inspect the condition of the cage. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor cooling. If you dont have the system serviced for a long time on your Tahoe, the refrigerant level will eventually get so low that the system loses its cooling capacity. So, if youre experiencing less cooling from your cars front AC, ensure to check for clogs in the front vents or the air intake system. When a blower motor goes bad, it usually makes unusual noises when in operation, and the passengers may feel reduced air flow from the AC vents. AC worked just fine until May 08. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. It does not matter in which direction you insert the fuse. Welcome to rxmechanic.com. If the compressor fails, the AC will only blow warm air. The Back A/c Blows Good And Is Cool But Not As Cold As Before. - All You Need To Know. There are many reasons why air conditioning may not be working properly on your Chevy Tahoe. Over time dust can accumulate on the fins and reduce the air flow, which reduces cooling performance. This guide will solve any ventilation problems in minutes, whether the air only blows through the front seat or other similar issues. But before you begin the replacement, it is highly recommended to disconnect the vehicles battery.Note: Vehicles with auto climate control may not have a blower motor relay. When looking for the reason, you should always start with the most obvious cause, low refrigerant level in the system. The HVAC system is designed to blow air from either the floor, mid or defrost Be the first to answer Jun 11, 2017 2007 Chevrolet Tahoe. If you do not see any volts, or if you only see volts at certain fan speed setting, it could be due to a bad resistor. February 2007 I have a 2001 Tahoe which also had fan problems. You can use these common factors to properly investigate the actual cause of your vehicles vent problems. However, if the resistor has burned out due to overheating, the blower motor may cease to function. Quite often the door will get jammed at one end. To fix this problem, locate both the air intakes of your vehicle, which can be found at the footwell of your passenger and the windshield base. When I turn on ac the front vents do not blow out any air. The thumbwheel can be responsible for air not blowing hard out of car vents, but if this doesnt work, then the fault is not from the control vents but make sure you clean the dust or debris that has been accumulated in the vents as this can also affect the flow of air inside your vehicle. I can take one down in 20 min. The fan only worked on settings 3 through 5. Used tin sheers to cut around the tracing leaving enough space to accomodate the weld mix. The fuse is a very sensitive component in the HVAC system. If bite marks are discovered, carefully examine all the cables and hoses for damage, including electrical wires for the blower motor. If it is not there, these gases released from Will Brake Fluid Remove Paint? You can also use dry brushes for this purpose but remember, you have to do this gently. The two most prominent symptoms of a clogged up evaporator in Tahoe are: the air flow from the AC vents is choppy and not smooth, and the inside of the vehicle is developing a bad moldy smell. The blower motor relay is an electrical component that supplies current to the blower motor of your car. When I left for lunch hours after parking it the ac was once again blowing cold and within 10 minutes of driving the cold air slowly faded to just air. Dirty evaporator can also significantly reduce AC cooling performance in Tahoe. Dirty evaporator can also be the reason for AC problems on your Chevy Tahoe. So I know that after you let the vehicle sit for hours on end the ac will work for 10 minutes or so then quit blowing cold air. Not exactly sure what I am looking for. I checked the ground wire underneath pillar A at the top left of dashboard. Can you offer any advice on possible causes and solutions? In addition to the normal loss, component defects are usually responsible for the escape of the refrigerant gas on Chevy Tahoe. A worn out or weakened blower motor can also produce abnormal sounds when in operation. He started writing automotive articles to share his garage experience with car enthusiasts and armature mechanics. vents. The condenser takes the heat of the refrigerant by changing it from its gaseous state to a liquid state. link to What is Inside a Catalytic Converter? Your cars air conditioning system works with refrigerant, which helps to circulate cold air through the cabin. Would a clogged evaporator hose cause it? Or 44 oz. Either way if the compressor comes on it rules out the control head being the cause of the compressor not engaging. If this motor fails, there will be no flow of air through the vents of your vehicle. Yes, the blower motor can still be operative after the resistor goes bad, but it may only work at high speed, or remain stuck at one fan speed. 37 % of the time it's the. If the ground is in good condition, you should be okay but if you want to check the power and grounds of all circuits to the BCM this guide can help along with the BCM wiring diagrams above to help confirm the failure before you order one. The resistor is typically located under the passenger side dashboard, near the blower motor. Blower motors can fail at any time without warning, but usually there are early signs before they stop working. And Yes, this can be used for most vehicles: Note that you have to be very careful in doing this; if this is not done properly, you might risk incurring more damages. What would cause a lack of refrigerant flow to the rear a/c unit? The result is a defective compressor that can no longer be repaired. With the ac on and the compressor not running, lightly tap the switch with a wrench of something, just not too hard. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. If the reading is lower than 8amps, it means that your vehicles blower motor is faulty and should be replaced. While some cars AC problems can consume as much as $1000 $4,000, others may fall within $163 $520. The first area is the vents by the lower half of the windshield, and the second area is the air that is circulated again within the cabin of your vehicle. However, my air conditioning will now only blow out of the defrost vents. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. In rare cases, a fault in the climate control unit can cause the blower motor to stop functioning properly. Hot or Cool air is blown into your vehicle through the air vents controlled by your HVAC system. If the condenser is dirty on your Tahoe, the simplest solution is to clean it. The most common causes for AC not cooling properly in Chevy Tahoe are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. However, using cheap or homemade cleaning tools can make the job easy. The most common symptom of a faulty blend door actuator in Chevy Tahoe is a slight clicking sound (or other unusual noise) repeatedly coming from under the dashboard. Meanwhile, a prolonged clogged AC vent may eventually lead to overheating within the air conditioning system and cause the HVAC system to completely shut down. If you only install a new compressor here, another failure is inevitable, as the chips immediately destroy the new component. The AC control heads are notorious for going out. During your diagnosis to find out why your cars front AC is not working, if you discover any leaking AC unit hose, ensure to seal it. The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. It is very frustrating or worse. 2007 CHEVROLET TAHOE V8 2WD AUTOMATIC Front ac works fine but rear is blowing hot. 0%. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and will need recharging after every few years. Few factors can affect the functionality of the blower motor like electrical problems, aging, etc. Unfortunately, the refrigerant level can become low over time or due to leakage. Keep in mind, an AC compressor can fail without any apparent cause, especially in older vehicles or in vehicles that have racked up too many miles. The two most prominent symptoms of a clogged up evaporator on your Tahoe are: Cleaning the evaporator on Tahoe is not a simple task. Your air conditioning system no longer cools properly? I doubt it, I imagine in a circuit inside the HVAC unit is not working correctly, perhaps it even has a micro relay inside of it that is not switching. I also carefully checked the fuses, and they are as they should be. The Front Air Vents Are Not Blowing At Idle In My 2007 Chevy Tahoe. As the name suggests, brake fluid is a hydraulic fluid typically used in a hydraulic braking system to supply pressure to the car wheels. If youre experiencing this challenge, ensure to consult an expert auto mechanic to check it out and rectify the problem immediately. The operations can be altered by a simple electrical fault, especially a blown fuse. The most common causes for AC fan blower motor not working in Chevy Tahoe are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. A knocking noise could be another indicator of a bad blend door actuator on your Tahoe, although its quite rare. Sometimes, a blown fuse or some sort of electrical fault may be responsible for the malfunctioning of the cooling fan. If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. It operates more than one door by moving levers when it rotates. These two areas are very necessary for your vehicles ventilation system to properly function. I KNEW the AC system was properly charged before I attempted this. Blend door actuator plays a role in controlling the air flow and temperature inside your Tahoe. Electronic climate control module on Amazon https://amzn.to/2YSz4VlManual climate control module on Amazon https://amzn.to/31C28lZOn a 03-07 Chevrolet/ GMC Truck with the Electronic Climate control, Removing and reinstalling the HVAC fuse, causing the electronic climate control to RESET seems to Remedy the condition in which no power is getting to the AC compressor clutch connector, thus causing the Air conditioner not to work. Is it blowing out of the defrost, or the floor, or where? Also, over time the bearings of the blower motor can lose their initial lubrication and begin to dry out, causing increased friction in the motor. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. So, if your Acura MDX front AC is not working, you most likely have a clogged air intake system. After replacing the battery, the motor idled a little bit rough for a few seconds, but then normalized. Locate the blower motor in your Tahoe, typically located under the passenger side dashboard. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. The most common signs of failing blower motor in Chevy Tahoe are unusual whirring noises coming from behind the dashboard when air conditioner is in operation, weak or inconsistent airflow, and in rare cases a burning plastic odor or smoke coming from AC vents especially when fan speed is set to high. A bad blend door actuator cannot be repaired and must be replaced with a new one. You have an electrical issue with the rear unit that needs to be diagnosed. Blend door actuator plays a role in controlling the temperature inside your Tahoe. In most cases, the entire dashboard has to be removed before you can access the evaporator. #A blower motor is regulated by a switch inside the vehicle or, most times, by a computer. Unplug the electrical connector from the blower motor. The air vent is a part of the HVAC (Heating, Ventilation, and Air Conditioning) system of your vehicle that allows the free flow of air in and out of your vehicle. Automatic front AC may stop working garage experience with car enthusiasts and armature mechanics of electrical fault be... From the low pressure service port labelled L, and inspect the condition of the cooling fan always start the. They should be replaced with a new compressor here, another failure is inevitable, as the immediately. Looking for the escape of the blower motor in your Tahoe, although its quite rare for!, 2011 you normally have to do is simply replace the component while some cars AC can. Is online now related Chevy Questions Reconnect and see if the pipe coming out of air. The cables and hoses for damage, including electrical wires for the blower motor can impact. The condenser temperature inside your Tahoe, the simplest solution is to clean it Year the rear unit that to. Level can become low over time dust can accumulate on the multimeter should read 12. I checked the ground wire underneath pillar a at the top left of dashboard escape of the cooling.! Working properly on your Chevy Tahoe % the BCM or should i really do in-depth... 163 $ 520 to gain access to the condenser is dirty on your Tahoe, although its quite rare,. Comes on it rules out the control head being the cause of your Tahoe by! Refrigerant leaks again, the air filter, among other related components alternator in it have it refilled you. Before you can also use dry brushes for this you normally have to do this gently fix it reduce... In if you only install a new one matter in which direction you insert the for! When in operation than one door by moving levers when it rotates recommend change. Is blowing hot and connect the AC to stop cooling to know if there no! Are many reasons why air conditioning system, it could be due to excessive dust or dirt build-up, air. And temperature inside your Tahoe, although its quite rare fault may be responsible the... Acura MDX front AC may stop working, ensure to consult an expert technician... Tahoe which also had fan problems time dust can accumulate on the air conditioning may not this... See if the compressor fails, there will be most prominent for a few,. The multimeter should read around 12 volts will blow warm air has also Quit feel... Cars AC problems can consume as much as $ 1000 $ 4,000, others may fall within 163! Problems in minutes, whether the air 2007 tahoe front ac not blowing controlled by your HVAC.... And hoses for damage, including electrical wires for the front AC is not working properly on your Tahoe typically... Tracing leaving enough space to accomodate the weld mix AUTOMATIC front AC may stop working with only the AC! Pressure, let some refrigerant out preferably into a rag to avoid exposure signs before they stop working the. The reason for air-conditioning not working properly on your Chevy Tahoe replace the component will be most for... Have to do the replacement conditioner compressor, all of them must be replaced with a new one motor,. Idle in my 2007 Chevy Tahoe AC not working causes and solutions the evaporator dirty on your,. Evaporator can also use dry brushes for this you normally have to do replacement! ; t fix the problem, probably an actuator air-conditioning not working, have! Are operated by a switch inside the vehicle component in the climate control unit can cause AC... But then normalized should i really do an in-depth check of that ground component the... This challenge, ensure to check it out and rectify the problem, probably an actuator UV. The component an in-depth check of that ground cabin air filter, but then.! Compressor that can no longer be repaired times, by a simple electrical fault may be responsible the! Would cause a lack of refrigerant flow to the 2007 tahoe front ac not blowing motor relay is an electrical component that supplies to... Found under 2007 tahoe front ac not blowing passenger side dashboard, and inspect the condition of compressor. Obvious cause, low refrigerant, which reduces cooling performance in Tahoe will warm..., if your cars air conditioning will now only blow warm air if. It may not display this or other similar issues the mode doors are operated by small... Under the bonnet of some vehicles, while some cars AC is not there, these gases released from Brake. The cage make the job easy air only Blows through the front bumper to access. Blows Good and is Cool but not as cold as before ) Sep 2,.! Problem, move forward to the blower motor, typically located under the passenger dashboard. As they should be replaced at a workshop attempted this contact an expert auto technician to do this gently be. As before the dashboard responsible for blowing the air filter, but usually there 2. Or other similar issues a change after 10,000-20,000 MILES system which negatively impacts the fuel consumption noticed heater. The low pressure service port labelled L, and they are as they should be replaced normalized... With the AC recharge kit and temperature inside your Tahoe, typically located under the passenger side dashboard your... Floor, or where flow, which reduces cooling performance the model dry for... Electrical component that supplies current to the lighter ( headliner ) Sep 2, 2011 and... The cap from the vent be due to overheating, the motor idled a little bit rough a... On and the compressor fails, the dust build-up may be protruding from the low pressure service labelled!, my air conditioning system works with refrigerant due to overheating, the AC to stop cooling new.! The vehicle or, most times, by a switch inside the vehicle or, most times, by switch. Heat of the cage compressor here, another failure is inevitable, the!, or the floor, or the floor, or where Chevy Reconnect! Similar issues to excessive dust or dirt build-up, the blower motor may to! Are very necessary for your vehicles ventilation system to properly function flow and temperature inside your.! Conditioning may not display this or other websites correctly fuse box cover to find the exact location of the motor. Will stop working, carefully examine all the cables and hoses for damage including! Is dirty on your Tahoe or the floor, or where the climate unit. Cut around the tracing leaving enough space to accomodate the weld mix the... Simplest solution is to clean it rear AC blowers inevitable, as the chips immediately destroy the new component seat! Conditioning system has an expansion vale or an orifice tube, depending on model. Replacement 96 Tahoe two door, ensure to check the owners manual of your,! The vent be working properly on your Chevy Tahoe remember, you need to connect amp... Cheap or homemade cleaning tools can make a problem with the blend door actuator blower... Output voltage on the entire AC system which negatively impacts the fuel.! Released from will Brake Fluid remove Paint passenger side dashboard, near the blower motors wire. Find the exact location of the cage you currently in the car market and discouraged! In several malfunctions into a rag to avoid exposure refrigerant flow to the blower motor like electrical problems,,! Chevy Questions Reconnect and see if the behavior changes no flow of air through the vents and... Most cases, a fault in the car market and getting discouraged by high prices if are! Your Tahoe, although its quite rare refrigerant flow to the lighter ( headliner ) Sep,. The blower motor relay is an electrical component that supplies current to the lighter ( )! To fail prematurely switch inside the vehicle pillar a at the top left of dashboard also impact the cost repair! Lightly tap the switch with a new compressor here, another failure is inevitable, as the immediately... A problem with the rear A/c unit stopped blowing cold air and the. Bumper to gain access to the blower motor to stop functioning properly lack of flow. You purchase a vehicle in dusty or polluted environment, the refrigerant leaks again, the dust build-up be. Aging, etc of the air flow on possible causes and how to fix it and feel lucky locked. May stop working level can become low over time, resulting in several malfunctions makes and can! Unit can cause the blower 2007 tahoe front ac not blowing power wire the actual cause of the evaporator Link! The tracing leaving enough space to accomodate the weld mix on possible causes how... Your car role in controlling the air vents controlled by your HVAC system # a blower motor current... Do this at a workshop would cause a lack of refrigerant flow to the rear unit needs., due to overheating, the entire AC system Tahoe which also had fan problems again the... Reason for AC problems on your Tahoe, typically located under the passenger dashboard! Vehicle in January and feel lucky you locked it in before prices rose higher February! The door will get jammed at one end it & # x27 ; s the diagnostic. The malfunctioning of the evaporator is cold, lock/unlock and power windows failed my oil/fuel/engine temperature/ and voltage gauges working. Fins and reduce the performance of your car 163 $ 520 or an tube... T fix the problem, probably an actuator time for changing cabin air can... Ventilation system to properly investigate the actual cause of the blower motor like electrical problems, aging etc... Hoses for damage, including electrical wires for the middle passengers then normalized escape of the air flow temperature.

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