Question about 1998 GMC Safari

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MY AC WORKS ONLY IN UP PANEL BUT WONT BLOW IN VENTS OR IN HI JUST LOW WHAT CAN BE WRONG WITH IT?

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Check the switch for the fan it could be the reason why only the high works. You may check on the wiring from the switch and on the fan. It could also be a defective fan

Posted on Jun 04, 2009

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Posted on Jan 02, 2017

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I have a 98 Buick Lesabre Limited. It blows Cool air, but not Cold.And also, I can't seem to make it blow out of the Center Dash Vents.


Cornelius, vent problem could be a pinched or loose vacuum line on controller,faulty AC vacuum motor, faulty AC programmer,etc. needs to be checked out by a good Tech, diagnosed and estimate on repair.
As far as vehicle only blowing cool air, issue could be blend door issue, plugged AC condenser core dirt/debris, low AC refrigerant, plugged AC lines internal, failing compressor, etc., again should be checked out, diagnosed and estimate for repair by a good Tech.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
1998 Buick Lesabre No Air From Dash Vents
http://repairpal.com/ac-vent-problem-346
Car AC Not Blowing Cold Enough Car Repair Information From MasterTechMark
My Car Is Not Cold What Could be Wrong Elite Auto Repair

Jul 15, 2016 | Buick Cars & Trucks

1 Answer

What is the problem? How do I fix it? Resistor Pack? Fan Control? Entire AC system?


your problem could be in your control switch panel itself. pull out the control panel and check the connections with a Probe Light Tester. The following video is for a Volvo but is used here only to give you an understanding of how to remove your A/C Control unit to check for poor circuitry. https://www.youtube.com/watch?v=SmCKFx1B4cA

Dec 17, 2015 | AC Cars & Trucks

2 Answers

My AC is blowing hot and it has Freon. What most likely to be the problem?


Your compressor is not coming on. Test this by turning the car on and setting the AC to mac cold and out the top vents only. After 5 to ten minutes feel the low pressure AC line. Its normally the one witg the blue cap and has condensation on it. If it doesnt have condensation or doesnt feel cold, then the compressor may not be coming on. Also when there is an AC switch that axtivates the compressor when you turn the air on, this could be whats bad. If you know that the compressor is not comming on at this point, check your fuses for the compressor. Of you cant determine the problem at this point you may have to have it services.

Jun 24, 2014 | 2003 Nissan Pathfinder

1 Answer

Ac wont blow cool


check the actuator door on the heater and make sure it is opening an closing the door on the heater to transfer from heat to ac. It is a small motor attached to the heater and allows the ac to be directed to the vents.

Apr 24, 2014 | 2000 Chevrolet Silverado

1 Answer

Air not blowing out dash vents


There is a cabin air filter behind the glove box. Check that first.

Mar 01, 2014 | 2010 Jeep Liberty

1 Answer

Air vent heater


Check the vacuum can on the ac box. It may just be a broken vacuum line or the can can be bad. There is a baffle in there that has to move from AC to heat. Sound likes there no vac getting to the baffle vacuum can. Could also be the switch in the dash board controller. Depends on what type of car it is.

Nov 08, 2013 | 2006 Nissan Armada

1 Answer

Ac compressor wont engage on its own


there is a low pressure shut off switch to prevent compressor damage charge the system before testing anything else

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2 Answers

Why my ac in my cadillac deville 1996 blows hot air?


If your low on freon then the A/C wont come on? for a 1996 you will need to get it serviced if you havent its normal to loose 10% freon a year,

May 06, 2011 | 1996 Cadillac DeVille

1 Answer

95 caddy AC switch wont engage??


If you have a low freon warning you will need to unhook the battery to reset the system before the compressor will run.

Jun 07, 2009 | 1995 Cadillac DeVille

1 Answer

2000 Vitara AC


hi there,my 2004 vitara blows fumes into vent whenever i drive behind other vehicle
whats the problem.

Oct 07, 2008 | 2003 Suzuki Vitara

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