Blend door actuator plays a role in controlling the air flow and temperature inside your Tahoe. Finding these mostly very small leaks is often not easy. All the actuators operated the doors perfectly ending the hot air escaping past the heater door into the air conditioner duct. A functioning ventilation system is needed in most modern vehicles for comfortability while driving. There can also be a refrigerant leak in the evaporator, in that case the evaporator will have to be replaced. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. So, if your Chrysler Town and Country AC is not blowing or the front AC fails to work, implementing the solutions above may be helpful. In rare cases, a fault in the climate control unit can cause the blower motor to stop functioning properly. However, the cost can be more depending on whether you have to replace faulty components like the compressor, sensor, condenser, or hose. Thank you so much. In any case, ensure to contact an expert auto technician to diagnose the AC problem before opting for a repair or replacement of any component. Follow this procedure after youve ruled out any problem with the blower motor fuse or relay. your help is truly apprietiated. If this is the case, ensure to replace the blown fuse and rectify the electrical faults. Locate the blower motor in your Tahoe, typically located under the passenger side dashboard. You can test the relay by swapping it with other relays in the fuse box with similar amp rating. Much thanks. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. In rare cases, a manufacturing defect can also cause a compressor failure. My Air Conditioner cools fine and then it will blow warm air for awhile. First of all, you must ensure that you prevent your cars AC compressor from going bad. 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. Climate control module is the brain of the air-conditioning system in your Chevy Tahoe, responsible for controlling all the components in the system. This problem can either be caused by a damaged blower motor or resistor, blocked air intake, damaged fuse, or a torn hose. The excess oil may pool in various places of the AC system and can coat the inner walls of the evaporator and condenser, diminishing their ability to absorb or dissipate heat, consequently reducing the overall cooling performance. For a better experience, please enable JavaScript in your browser before proceeding. Once you confirm it, kindly remove the blown fuse and replace it. In other cases, the front AC may stop working with only the back AC working. The most common reasons a Chevrolet Tahoe heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. A clogged air intake system may be the reason why your cars air conditioners front vents are not blowing out. If you discover dirt or dust build-up within the components, get a mixture of detergent and water solution and clean the vents with a foam paintbrush. 2007 Chevy Tahoe with My front AC is not blowing. It worked for two weeks - not great but it put out cold air, then a minute or two of warm air w/ the smell again. It will only cost a few bucks. Some of the common reasons why youre experiencing a situation offront AC not working but back ishave been exposed in this article. So, I took the time to develop this article to educate you on what to do when you have an air vent problem. Blower motors are maintenance-free and can easily last for over 10 years, but they can fail earlier due to overheating, moisture damage or manufacturing defect. Ugh. When you have a clogged air conditioner vent, the difference in temperature circulation will make a part of the car cold while the other becomes hot. Therefore, it is recommended to do this in a workshop. I Was Told It Was A Motor That Controlled These Duct Work In The https://www.2carpros.com/articles/how-to-check-a-car-fuse, https://www.2carpros.com/articles/how-to-check-wiring. If the result of this process doesn't fix the problem, move forward to the next step. 20077 tahoe drivers side front 7 rear door speakers not working the 1 " tweeter on the drivers side is working ..are the speakers bad or is it something to do with the stereo. joeydano Member Posts: 2 August 2011 Having the same problem, Front blower goes off with. If the condenser is dirty on your Tahoe, the simplest solution is to clean it. 0%. This can shock the system and damage it. Erratic dash cluster behavior, T/C, Brake light, ABS light, dash lights, door & windows do not work, Constant chime, radio goes off,gauges fail. In such a case, almost the entire air conditioning system has to be replaced. Check the owners manual of your Tahoe or the fuse box cover to find the exact location of the fuse for the blower motor. 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. A clogged or leaking condenser can also be the reason for air-conditioning not working properly on your Tahoe. To know if your vehicles motor is faulty, you need to connect an amp meter to the blower motors power wire. Osuagwu Solomon is a certified mechanic with over a decade of experience in the mechanic garage, and he has over five years of experience in the writing industry. 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. Even after the a/c was recharged. 2007-2014 Tahoe / Yukon / Escalade Models, General Tahoe/Yukon/Escalade Discussion Forum. Could this be the ac control switch on the dash? 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. The Back A/c Blows Good And Is Cool But Not As Cold As Before. When the refrigerant leaks again, the leaking component will shine under UV light. A low refrigerant level in your Tahoe does not necessarily mean there is a leak. Unplug the electrical connector from the blower motor. However, the high-pressure refrigerant pulls these chips back with it during operation and the next damage is inevitable. So, if the blower resistor in your vehicles ventilation system is bad, it can be why the car heater is not blowing air and affects the flow of cool air inside your vehicle. Do you have the same problem? However, due to excessive dust or dirt build-up, the air filter can be clogged over time, resulting in several malfunctions. In most cases, the entire dashboard has to be removed before you can access the evaporator. 1. It Blows Out Warm Air. Aside for checking the system for fault codes, I would suspect a faulty blend door actuator, or faulty expansion device. The function of the blower motor resistor is to control the speed of the blower motor. This might lead to a point where the air conditioner starts blowing hot air. No not a problem. 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. A damaged belt can also lead to this issue. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. The most common symptom of faulty blend door actuator on Chevy Tahoe is a slight clicking sound repeatedly coming from under the dashboard. I just paid a diagnostic for the AC. Simultaneously my oil/fuel/engine temperature/ and voltage gauges stopped working, AC stopped blowing cold, lock/unlock and power windows failed. 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. When I got home I opened the hood and noticed the compressor was not engaged even though the switch was on and on Max / Hi. Do Not Sell or Share My Personal Information. The catalytic converter is a critical component of your car's exhaust system that helps minimize the amount of toxic gas released into the atmosphere. If you work on other areas like cleaning the vents, topping off the refrigerants, etc., and you have a blown fuse, the AC will not work. I removed the actuator that was anchored by 2 screws and then the broken plastic cam. Start by inspecting the condition of the cabin air filter on your Tahoe. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). Are you currently in the car market and getting discouraged by high prices? I tshold tell you on the truck there should be a sticker underhood with charge amount. I assume one of the ducts has come loose feeding one of the ceiling vents. Therefore it is recommended to do this at a workshop. A cars air conditioning system is susceptible to malfunction over time like other components. If this is the case, the only option is to replace the broken part. Additionally, a damaged wire in the circuit, including the wire from the fuse box, can also cause the blower motor to stop working. 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. So, you will most likely experience a situation where the front AC blows cold, the rear AC blows hot, and vice versa. Relays are electromagnetic switches that are used to switch electrical loads on and off. Dirty evaporator can also significantly reduce AC cooling performance in Tahoe. 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. Some of the signs that let you know that your cars AC vent is clogged include the following; inconsistent temperature circulation, dust build-up within vents, overheating, etc. I also carefully checked the fuses, and they are as they should be. Home Troubleshooting Chevy Tahoe AC not cooling causes and diagnosis. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling, heating and air flow. 1. Just like with low refrigerant, the AC in Tahoe will blow warm air only if the AC system is overcharged with refrigerant. If this is the case, you can start with the fuses at the underhood fuseblock. 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. Therefore, if you have a faulty cooling fan, it will impact the condenser negatively and result in some sort of HVAC system malfunction. Just have it refilled and you can drive with pleasant temperatures again. This enables the air conditioner to produce cold air. The air conditioning is a blessing, especially in hot temperatures. You can also use dry brushes for this purpose but remember, you have to do this gently. link to Will Brake Fluid Remove Paint? However, lets consider one aspect of the problem, which is the common reason why a cars front AC fails to work. When you increase or decrease the AC fan speed in your Tahoe, the climate control unit signals the resistor module to increase or decrease the flow of electric current to the blower motor. This guide will solve any ventilation problems in minutes, whether the air only blows through the front seat or other similar issues. Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your Tahoe. That's an impressive piece of work :shades: . #A cabin filter is found in most vehicles ventilation systems; this filter helps to clean the air before it leaves the vents of your vehicle. Resolving this issue can fix the problem of the car heater and ac not working in your vehicle. Since Chevy Tahoe is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located in the air conditioning system. Therefore, the filter performance will not increase significantly even after cleaning. Front was not blowing air only the rear. If the pipe coming out of the evaporator is cold, then it's likely a blend door problem, probably an actuator. 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 Tahoe. #The air conditioning system consists of air control vents with a control door inside your vehicle on the dashboard. 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