Question about 1999 GMC Suburban

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Front a/c wont blow air - 1999 GMC Suburban

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You need to check the blower on the firewall under the hood

Posted on Jul 17, 2009

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Front heater not blowing any heat


You will need to be more specific ... front heater wont turn on after using the on switch? Heater blows but only warm air ... heater blows cold air .... see what I mean.

Nov 26, 2013 | 2008 Hyundai Veracruz

1 Answer

Front AC Blowing cold air but rear not blowing cold air


Check for blown fuse, you may have separate blower motor for rear. You may have master switch to turn off and on for rear A/C.
If so, the air wont be blowing at all.

Oct 28, 2013 | 2003 Chevrolet Tahoe

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Air cinditioning wont stay on, it switches to heat and wont shut off


What do you mean when you say it wont shut off? is it blowing hot air or do you just feel a lite flow of hot air even if you have the settings to cold?

If this is the problem that you always feel hot air at low flow and the ac goes to hot air then i would say one of two things, first if you have the selector to cold and you feel hot air then there may be a problem with the blend door, this door move to allow hot or cold air, the door may be broken or just a bad motor that controls it. keep in mind if the ac system shuts down for any reason the air then will be warm, it will be about the same temp as outside and maybe a little hotter.

this problem almost sounds like the ac compressor shuts off and then you are getting the outside air which is hot, there are many reasons for the compressor to shut off, it could be the compressor clutch heating up and disengaging , this would be due to a bad compressor clutch.

another reason is the fans are not working, the best thing to do is when the system starts to blow warm check and see if the compressor is running, start engine and look at the front of compressor, with ac off the front of it will not move, and then with ac on the front will spin, check it out and let me know, if it blows warm air and ac is not working then it may be compressor problem but if you are getting warm air and the compressor is spinning then it may be a door problem.

This is hard to check with out testing the system, so i listed a few things to check and let me know the out come. also the ac blows cold for how long before it gets hot air blowing out of the vents, good day.

May 25, 2012 | 2000 Dodge Grand Caravan

1 Answer

My AC only works when the car is in motion. It blows warm air otherwise.


Sound like maybe your a/c condensor fan is not working, should come on with a/c on, the fan sit in front or back of radiator, condensor is bolted to the front of the radiator, if its not working at stops no air blows through condensor and pressure will get high and a/c wont blow cold, while driving air is running through condersor so a/c will work fine.

Jun 30, 2010 | 2003 Lexus RX 300

1 Answer

My 95 jeep grand cherokee wont blow air out of the front vent only on bottom vent and defrost


Most of the time the problem is that the upper hose that feeds the air to the vents has fallen off and is blowing air somewhere else.

Jun 09, 2009 | 2003 GMC Envoy

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