2007 tahoe front ac not blowing

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. Home Troubleshooting Chevy Tahoe AC blower motor not working causes and diagnosis. The refrigerant is designed to work in synergy with the compressor within the air conditioning system. In some cases, this malfunction can result in your Acura MDX rear AC blowing hot air. With this information, you already know how to unclog air vents in your car and fix other air vent issues. I layed it on a small sheet of embossed aluminum and used a perminate marker to trace the outside and drilled a 3/4 inch hole for the female gear spline hole opening then covered the gear hold with masking tape so the JB Weld would not get into the splines. The function of both expansion valve and orifice tube is the same, to restrict the flow and reduce pressure of the refrigerant before it enters the evaporator coil. After replacing the battery, the motor idled a little bit rough for a few seconds, but then normalized. If the condenser is dirty on your Tahoe, the simplest solution is to clean it. Instead of changing the cabin air filter in Tahoe, it is often recommended to first clean the filter. I KNEW the AC system was properly charged before I attempted this. I am frustrated and stuck. This might lead to a point where the air conditioner starts blowing hot air. Thank you so much. I replaced the blower resistor (about $30.00 from Chevrolet Parts). There are many reasons why your Chevy Tahoe AC is not cooling properly. 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. Immediately you are done with this, you will notice a better performance of your vehicles ventilation system. Unplug the electrical connector from the blower motor. The HVAC system is designed to blow air from either the floor, mid or defrost Once or twice I have noticed smoke blowing out of the vent for a few seconds. Note: Dirty cabin air filter mostly only leads to reduced cooling. The intake system helps to collect air from outside the vehicle and circulate it through the air conditioner system. However, if the blower motor cannot function, then no cool or hot air will be blown inside your vehicle when you turn on the air vents. Finding these mostly very small leaks is often not easy. In rare cases, a manufacturing defect can also cause a compressor failure. I have the same problem in a customer's 2000 T&C. A common symptom of a faulty blend door actuator in vehicles with dual zone climate control system is one side blowing hot air while the other side is blowing cold air. A leaking condenser can lead to a loss of refrigerant and reduced cooling performance of the system. You are using an out of date browser. Yes, a dirty air filter can alter your cars air conditioner from cooling properly. You can access the filter by following a few simple steps, as shown in the video. The sealant and labor costs will not affect your pocket so much. The dealer said it was a modulator. We are a team of ASE certified mechanics 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. If these intakes become blocked or clouded by debris or other substances, it will stop the flow of air through your vents. 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. 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. A worn out or weakened blower motor can also produce abnormal sounds when in operation. This challenge can be overwhelming when you cant figure out what could be wrong. 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. If the fuse is blown, replace it with a new one with the specified amp rating. Yes, that's it. Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling, heating and air flow. This is the case regardless of whether the system is set on "auto" or whether you manually select the vents (i.E. Over time, these dust particles can builds up on the fins and block the air flow through the evaporator, resulting in poor cooling. Larger leaks may already be heard or you can find them with a leak detection spray. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. Z. In any case, it is advisable for laypersons to visit a workshop. A knocking noise could be another indicator of a bad blend door actuator on your Tahoe, although its quite rare. You can use these common factors to properly investigate the actual cause of your vehicles vent problems. The operations can be altered by a simple electrical fault, especially a blown fuse. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. Sep 30, 2008 #3 T tspain Full Access Member Joined Apr 16, 2008 Some filters are found under the bonnet of some vehicles, while some are located under the vehicles passenger seat. I turned the ac switch off and proceeded to work with the windows down. If one side of your cars AC is not working, the car is most likely running on a low refrigerant level. We recently created this blog site to enable us to share our knowledge with other automotive mechanics and car owners. 2007 Chevrolet Tahoe A/C Heater Blend Door Actuator; 2007 Chevrolet Tahoe Hose (Upper . The blower motor relay is an electrical component that supplies current to the blower motor of your car. They replaced the compressor and no cold air still only warm air. 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. You should take your vehicle to the mechanics shop for this replacement because doing this can be very technical. Therefore it is recommended to do this at a workshop. If the motor does not spin after directly connecting to the battery, it confirms that the blower motor is dead and should be replaced with a new one. Few factors can affect the functionality of the blower motor like electrical problems, aging, etc. However, the cost can be more depending on whether you have to replace faulty components like the compressor, sensor, condenser, or hose. Pro Tip It is imperative the resistor module is checked. The following solutions will fix the problems outlined above. Climate control module is the brain of the air-conditioning system in your Chevy Tahoe, responsible for controlling all the components in the system. If only hot air comes out of the air vents in your Tahoe, then the problem probably lies somewhere else. If the resistor module develops a fault, it can cause the blower motor to stop working. The compressor is the heart of the air conditioning system in Chevy Tahoe. Just repaired a problem with my daughters 2001 T & C van that saved her $1300 dealers estimate. 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. All the actuators operated the doors perfectly ending the hot air escaping past the heater door into the air conditioner duct. That could be a plugged orifice tube or a problem with the temp blend door. 0 answers. Or 44 oz. Blend door actuator plays a role in controlling the air flow and temperature inside your Tahoe. Keep in mind that reduced air flow doesnt always indicate a problem with the blower motor, as it can also happen due to a clogged cabin air filter, dirty evaporator, or a bad mode door actuator. The air conditioner in my 2007 chevy tahoe LTZ is not working properly. Because it cost nothing but time. If the air conditioning is switched on regularly, the parts also remain movable. 462.00 to get it fixed. 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. This puts strain on the motor and further reduces the air flow and cooling performance, and may also cause unusual noises from behind the dashboard. I have a brand-new battery and alternator in it. Have gone back and forth with my mechanic and need to get it fixed Live in Az and my family is HOT sitting in the back. The driver's side blows hot air, but the passengers side blows cold air. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. Use the thumbwheel to start and stop the airflow. In other cases, the front AC may stop working with only the back AC working. 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. If the refrigerant level goes down again quickly, it means there is probably a leak. Illuminating the Rear Lock/Unlock Switch? If you are a DIYer, ensure to get a voltmeter to test for the blown fuse in order to replace it. Is it blowing out of the defrost, or the floor, or where? "2007 chevy tahoe ltz--rear air works ---front air does not work." Hi! That's what I was afraid of. However, if you cant do the job, you may have to contact a professional auto technician to do it. An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. I removed driver lower dash panel, sub panels and the 3 air/mixer actuators are visible and easy to get to. I also tested the compressor switch which was good. 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