Typically relays are located in the engine compartment or under the steering wheel on the left-hand side. If the condenser is dirty on your Tahoe, the simplest solution is to clean it. You can also use dry brushes for this purpose but remember, you have to do this gently. It does not matter in which direction you insert the fuse. 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. A clogged air intake system may be the reason why your cars air conditioners front vents are not blowing out. In rare cases, a fault in the climate control unit can cause the blower motor to stop functioning properly. If only hot air comes out of the air vents in your Tahoe, then the problem probably lies somewhere else. 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. Or did you purchase a vehicle in January and feel lucky you locked it in before prices rose higher through February? Climate control module is the brain of the air-conditioning system in your Chevy Tahoe, responsible for controlling all the components in the system. These parts are 1 year warrany parts. Climate control module is the brain of the air-conditioning system in your Chevy Tahoe, also responsible for turning on and controlling the speed of the blower motor. 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. yes you can apply 12 volts dc power to the male pins on the blower motor after removing the connector and observing polarity of the wires so you know which pin is the ground (negative which is the black wire, positive the red) and which one is the positive. Remember cruising downtown on a hot and sunny or driving on a snowy day, then suddenly your dashboard air vents are not working. It's the passenger side vent for the middle passengers. - All You Need To Know. Air conditioner front automatic auxiliary control (CJ2), air conditioner front manual auxiliary control (CJ3), rear auxiliary air conditioner (C69). Therefore it is recommended to do this at a workshop. 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. No not a problem. Over time dust can accumulate on the fins and reduce the air flow, which reduces cooling performance. Tires? Too much oil: If there is excessive amount of oil added with the refrigerant, it can cause compressor performance issues which reduces cooling efficiency, and can also cause premature compressor failure. The system is filled with forming gas (nitrogen with a little hydrogen) in the workshop. Insufficient amount of refrigerant is still the main cause of a non-functioning AC system. vents. Note: Dirty cabin air filter mostly only leads to reduced cooling. It is very frustrating or worse. This door can be used to block or allow the flow of air inside your vehicle. However, if you have a situation offront AC not working but back is,that must be a tricky challenge demanding critical analysis. With the ac on and the compressor not running, lightly tap the switch with a wrench of something, just not too hard. One of the common reasons a compressor may go bad is due to lack of constant usage. 2007-2014 Tahoe / Yukon / Escalade Models, General Tahoe/Yukon/Escalade Discussion Forum. However, if you have a blown fuse, ensure to check it out with a working voltmeter. This hinders the condensers ability to release heat as less air passes through the mesh, which results in poor cooling in the cabin. Pro Tip It is imperative the resistor module is checked. In some cases, the dust build-up may be protruding from the vent. To begin troubleshooting, you must first connect the diagnostic tool to your Tahoe. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. It would be best to contact an expert auto technician to diagnose and fix this problem as soon as possible. Well, that picture pretty much clears up how it works. 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. A professional mechanic can swiftly diagnose the issue for you. Just have it refilled and you can drive with pleasant temperatures again. A worn out or weakened blower motor can also produce abnormal sounds when in operation. The dealer said it was a modulator. Though you will not damage your vehicle if you decide to drive with a bad ventilation system, however, you need to be aware of the probable factors that could have caused this problem, so you know if your car just needs a quick fix or not instead of unnecessarily inconveniencing yourself and also your passengers. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. If he is not in the garage fixing challenging mechanical problems, he is writing automotive repair guides, buyers guides, and car and tools comparisons. Then carefully remove the debris or substance blocking these intakes. My Air Conditioner cools fine and then it will blow warm air for awhile. 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). 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. Does take a long time, if you attempt, make sure to have atleast 3-7 hours aside.well depending on your tools and know-how. 2005 CHEVROLET TAHOE. Once the leak has been found, this must be closed again by replacing the respective component. Did you ever figure out what was wrong with your van? I turned the ac switch off and proceeded to work with the windows down. I can take one down in 20 min. However, you can close or control the direction of the airflow. After replacing the battery, the motor idled a little bit rough for a few seconds, but then normalized. You must log in or register to reply here. When looking for the reason, you should always start with the most obvious cause, low refrigerant level in the system. 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. The pollen filter, also known as the cabin filter or microfilter, is a central component of the ventilation system in your Chevy Tahoe. In other cases, the front AC may stop working with only the back AC working. 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. I have already checked freon and it is fine. No air, no sounds NOTHING. Ac Randomly Starts/engages (after Being Off When Vehicle Was Turned Off Previously) When Starting The Vehicle. We are an automotive mechanic blog that helps mechanics and car users to find the most recent and accurate technical and repair information for their cars. Just because of the timing, I assume the dead battery and this AC problem are somehow connected. If the volts reading is normal, it indicates a fault in the blower motor. You can also try preparing a cleaning solution at home by mixing water and vinegar to aid you with this cleaning process. 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. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. The intake system helps to collect air from outside the vehicle and circulate it through the air conditioner system. When this component is faulty or clogged, it will be difficult to collect air. If youre experiencing this challenge, ensure to consult an expert auto mechanic to check it out and rectify the problem immediately. We are a team of ASE certified mechanics
your help is truly apprietiated. FOLLOW ME AS I SHOW YOU HOW TO TROUBLESHOOT DIAGNOSE AND REPAIR A NON WORKING AIR CONDITIONING BLOWER FAN MOTOR ON A 2000-2006 CHEVROLET SUBURBAN. When I Left To Run Errands Today The Ac Was Working Fine. Used 4 minute JB Weld with extra hardner and filled the cavity and held both halves together then added the weld all around. - All You Need To Know. 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. Check all the relevant fuses and relays related to the air-conditioning system in your Tahoe. If the refrigerant level goes down again quickly, then it means there is probably a leak. If this is the case, ensure to replace the blown fuse and rectify the electrical faults. There are many reasons why the AC blower motor may not be working in your Chevy Tahoe. 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. A damaged belt can also lead to this issue. You are using an out of date browser. 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. - All You Need To Know, How to Jump AC Compressor Clutch Correctly. First of all, you should find out where the blower motor relay is located in your particular model of Tahoe. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. Also, the vents may be clogged up with dust or dirt over time, and this can be the reason for the problem. The fuse is a very sensitive component in the HVAC system. You see, that was not so difficult. A maximum of the metal pipes can be rinsed here. This is because the air conditioner system is largely electronic. 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