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I've read some of the responses, and most state it is the expansion valve. Freon AC Refill: http://amzn.to/2HPlaLAHow to fix car blowing hot air when AC is on. the rear unit fan, dampers, and hot water coil works like they are supposed to. If there is anything you would like to add, please leave a comment below. The A/C system in your Yukon consists of a compressor that is belt-driven, an evaporator and freon. The AC blower motor is not working properly in the Yukon XL. 134 freon is cheap get you a can with the gauge and pump it back up and see how long it last. Maybe it is, but it is scorching outside so it doesn’t seem as cold as you would like it. 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, GMC Envoy: Air Conditioner Not Cold → Diagnosis, GMC Sierra: Air Conditioner Not Cold → Diagnosis, Chevy Impala: Brake Lights Stuck On → Diagnosis. When the Yukon is idling in drive the ac will not blow cold air. A common mistake people make is that they buy an AC based on their budget and not based on the requirement of the room. Refrigerant may slowly leak out of the system over days, weeks or even years. In the front, it only feels like air is coming out. What would be the cause of the rear AC. It may not be the easiest of tasks if you are not familiar with working with car air conditioners. Freon AC Refill: http://amzn.to/2HPlaLAHow to fix car blowing hot air when AC is on. The Yukon seems to idle around 500-700, which I feel is too low. when i turn the control knob to cold i get no cold air. Turned out that the blend door motor was dead. When get driving again the ac blows cold air fine, this is an intermitten problem. May 24, 2010. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC. Front A/C works fine and blows ice cold. I am having trouble with my ac in 2005 GMC Yukon. We recommend having a professional recharge your A/C if it does end up being a coolant issue. They found the A/C compressor line leaking. That heat eventually leaves the engine compartment and enters the cockpit through the air vents. 2003 yukon xl front a/c not blowing cold air.back working just fine. When I push the ac button, the motor does even drag a little like it used to when turing on the ac. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. The vehicle has dual climate controls. It still blows, just not cold. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Asked by Visitor in Monticello, FL on . I’m having an HVAC problem. DDaley: I have a 2004 GMC Yukon SLT with 5.3L V8. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC. A small AC in a huge room will always find hard to cool the room in peak summers. The refrigerant hose is the “high pressure side” hose and sees about 350 psi pressure when the A/C is running. Both lines at the rear evaporator are warm when I fully load the a/c on max, one is just a bit warmer than the other; unlike the front where the one line is so hot you can't touch it. 2004 gmc yukon front ac blowing warm air and rear a/c is cooling fine. Most of the time, when your Yukon’s air isn’t blowing cold enough, it is going to be a lack of refrigerant causing the problem. Undersized AC. Whenever my mom turns on the a/c, cold air only flows through the back seats. GMC Yukon AC Is Not Working? The front works very well and blows cold air in conjunction with front settings. Lack of Refrigerant– Your Yukon’s air conditioner will not work if the refrigerant has disappeared due to a leak. The AC blow cold for about10 minutes then blow hot. There are other issues that can cause this as well. AC not cold enough, Compressor doesn’t run, air conditioning not cold, Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon. 2000 Tahoe A/C - front not cold, rear kind of cold. added r 134 last week ,with low side pressure of 70 psi,high side at 275 psi.what could be the problem {: ) … Good luck! the front ac works fine but the rear does not. The rear A/C is blowing room temperature air or maybe a little warmer. Perhaps … The air just quit blowing out cold air. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. It is entirely possible for your Yukon’s heater to work just fine even when the air conditioner is not blowing cold at all. the air is blowing out of the ceiling vents but not cold. Faulty AC Remote GM has issued a technical service bulletin (TSB) #04-01-38-013 to address an air conditioning problem where the air conditioning isn’t cold or the compressor doesn’t run. 2000 GMC Yukon. However if you are low on freon with a truck that has front and rear ac then there will be a temp diff between the two. GMC Yukon Air Conditioning Not Blowing Cold Causes. It’s not hot or cold, just air. Ok, so now that … Continue reading "2004 GMC Yukon … The 1999 GMC Yukon came with a large, 5.7-liter V-8 engine that pushes out more than 255 horsepower. As it turns out, the AC system in Escalade, Silverado, Sierra, Yukon, Suburban, and Tahoe trucks stops working and ceases blowing cold air because of a defective bracket design affecting the A/C compressor and condenser line. Having your car’s air conditioning go out suddenly can ruin your day fast. Re: AC blowing air but not COLD air May 09 2014, 4:05am More than likely you have lost freon, you can unplug the pressure switch on the dryer and jump the connector to make sure the compressor does engage. Location of the compressor is very low in front of the engine. It can be tough to find why your Yukon’s heater is blowing cold. The air just quit blowing out cold air. We have the SUV listed above XL Denali. Another way to prevent getting this page in the future is to use Privacy Pass. My 2001 GMC Yukon is only blowing cold air in the back. All the controls are set to cold for the rear and the blower is operating fine. The AC will finction, it provides cold air, but it only comes out of the defroster, or on the front vent setting, it blows air out of the floor & defroster. It was cold out and the heat would not work in the front only. Conclusion: Heat Not Working GMC Yukon. We turn on the air conditioning and cold air blows in the rear and warm air blows in the front vents. But, using the info above about how and why a heater would fail can make it a lot easier. Is there some switch that is having a problem or is there a way that I can increase the idle? 9. My 2001 GMC Yukon is only blowing cold air in the back. It’s not hot or cold, just air. Sometimes it would do this and other times it would not, Shut the AC off for a few minutes and then turn it back on and BAM cold air … After using the defroster, my 2002 Yukon with computer climate control won't switch to the main vents. When the Yukon is idling in drive the ac will not blow cold air. The Yukon seems to idle around 500-700, which I feel is too low. 2002 Yukon rear A/C not blowing cold. The 2016 GMC Yukon has 8 problems reported for a/c not working properly. Checked the running pressure and it was to the low side of normal. 2003 yukon xl front a/c not blowing cold air.back working just fine. Yukon / 2000 / front ac blows hot air rear... Front ac blows hot air rear blows cold. The fan will adjust from off and low to high. also no condensation is draining from front unit - Answered by a verified GM Mechanic. When I push the ac button, the motor does even drag a little like it used to when turing on the ac. When get driving again the ac blows cold air fine, this is an intermitten problem. Wrong thermostat settings. It's blowing warm air through the front vents and blowing cold air in the rear. In the front, it only feels like air is coming out. The only thing that the air conditioning system has in common with the heater is that they both use the climate controls and the blower motor. RepairPal will help you figure out whether it's your AC Refrigerant Leak, Climate Control Electrical Issue, AC Compressor, or something else. The rear ac is blowing ice cold. Here are a few of the reasons why a car air conditioner may not be blowing cold air: Why is my car air conditioner not blowing cold air . I checked fuses under the dash and in the engine and they are all good. That’s why troubleshooting the air conditioner is totally different than troubleshooting the heater. Left to right works properly and all modes work properly. The low pressure side at the accumulator is reading 54 psig. We use cookies to give you the best possible experience on our website. Please enable Cookies and reload the page. I know this is a common problem but I … This is a 2002 Yukon. If your GMC Yukon isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. The refrigerant hose is the “high pressure side” hose and sees about 350 psi pressure when the A/C is running. when i turn the control knob to hot the air comes out of the floor outlet and is warm/hot. shut truck off for a while then blow cold for 10 minutes then hot. The 2016 GMC Yukon has 8 problems reported for a/c not working properly. Your IP: 145.239.197.118 ... You may not realize there's a refrigerant leak until the air conditioner stops blowing cold. 8. ... GMC 2500 with front and rear air. You may need to download version 2.0 now from the Chrome Web Store. Whenever my mom turns on the a/c, cold air only flows through the back seats. How to add freon to your 2004 GMC Yukon: hook up the can of refrigerant (likely r-134a) to the low pressure port. My 2001 Yukon Rear AC blows warm air. 1 Answer. I am having trouble with my ac in 2005 GMC Yukon. In fact, most won’t even cycle on without the right amount of refrigerant pressure. These are a few of the most common issues that could cause your Yukon to not blow cold enough. my front ac works fine, its the rear climate control that does not work the fan doesnt blow cold or hot air im assuming its a fuse but i am unsure of which one to get any help would be greatly appreciated • My 2000 Silverado RCLB was getting cold initially then dwindling down to just ambient air temps. The problem of your aircon being not cooling are commonly caused by these 10 aircon problems which we will discuss in detail today! Cloudflare Ray ID: 61e9c8b9ee941f35 Jump to Latest Follow Status Not open for further replies. It has its own belt, which does not drive anything else but just the AC compressor. Generally, large V-8 engines give off a lot of heat. Not sure what the problem is but the AC in the front of the car blows air but it isn't cold but the rear controlled AC is perfectly fine. Performance & security by Cloudflare, Please complete the security check to access. 1. I had a mechanic replaced all new AC parts on my 2002 GMC Yukon. 2015 Yukon XL Denali Air Conditioner Repair – I recently had a GMC Dealer repair my A/C, it was blowing not cold air. AC not cold enough – GM products AC not cold enough, Compressor doesn’t run, air conditioning not cold, Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon GM has issued a technical service bulletin (TSB) #04-01-38-013 to address an air conditioning problem where the air conditioning isn’t cold or the compressor doesn’t run. The TSB published by the manufacturer states that the blower motor stops working or continues to run in low temperatures. One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. When in AC mode occasionally it will start blasting out hot air and the only way to fix is to shut off engine for a little while and it resolves. It still blows, just not cold. Also, the serpentine belt going to the water pump going bad can it not turn as fast as it needs to. Average repair cost is $1,170 at 59,800 miles. The AC blower motor is not working properly in the Yukon XL. 1 Answer. Is there some switch that is having a problem or is there a way that I can increase the idle? If there is a problem with your compressor or evaporator, adding freon will not restore cooling. This AC problem is attributed to improper insulation of the motor and motor connection, causing the motor to freeze and preventing the motor from operating. ... i have a 2005 yukon denali and the ac is not blowing cold. added r 134 last week ,with low side pressure of 70 psi,high side at 275 psi.what could be the problem Posted by … Aircon being not cold enough is a very common aircon problem faced in Singapore. But, if my understanding of AC systems is correct, I am going to have to discharge the system, replace the tube, draw the system down and then re-charge. As it turns out, the AC system in Escalade, Silverado, Sierra, Yukon, Suburban, and Tahoe trucks stops working and ceases blowing cold air because of a defective bracket design affecting the A/C compressor and condenser line. Here’s symptoms of a bad water pump from Autoblog. The AC compressor is not driven by the fan belt. • New compressor, condenser, accumulator, orfic tube and expansion valve. The size of the AC should be according to the size of the room. If you still get cold air out of the rear vents but the front only blows hot air you may have a bad temp door actuator in the dash, it may be stuck on hot and not able to move to cold air. If you put too much coolant into the system, you can really do some damage. This AC problem is attributed to improper insulation of the motor and motor connection, causing the motor to freeze and preventing the motor from operating. I have a 99 Yukon Denali and my front vents are not blowing cold for some reason. You don’t need to tolerate a stuffy, uncomfortable car, and you don’t need to rely on the shop to fix the problem either. Average repair cost is $1,170 at 59,800 miles. It is actually as low as the crank shaft of the engine (this is how it is in my '04 Tahoe, which I … The most common causes of broken air conditioning are leaks or compressor issues. We hope this article will greatly assist you in your aircon troubleshooting. The TSB published by the manufacturer states that the blower motor stops working or continues to run in low temperatures. ... My truck started blowing “not cold” air after I changed a faulty blower resistor (which fixed my fan speed issues).

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