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Brent B Tanner Posted on Nov 07, 2018
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My AC in my 2002 Chevy Tahoe quit blowing cold. I have checked the freon pressures and they are good. I have jumped the compressor and it kicks on but the air doesn't get cold

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Jacob Parker

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  • Posted on Nov 09, 2018
Jacob Parker
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Hold the valve tell its empty try seeing if its cold freon comming out if not drain it all the way an put new in it

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  • Posted on Nov 09, 2018
Justin Berthiaume
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Check the big line in the engine compartment to see if itā€™s getting cold if it is one of the heater actuators could be stuck in the heat position

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  • Chevrolet Master 29,494 Answers
  • Posted on Nov 07, 2018
john h
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Add freon ---you check pressure when a/c running not in off position

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  • Posted on Nov 07, 2018
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Check your temp control knob on the interior, might not be engaging properly.

  • Ray Valdez
    Ray Valdez Nov 07, 2018

    Check your temp control knob on the interior, might not be engaging properly.

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  • Posted on Nov 07, 2018
Deborah A Jones
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Check that radiator thingy. Sorry, can't remember the name of it. Oh yeah. The thermostat.

5 Related Answers

Anonymous

  • 420 Answers
  • Posted on Apr 19, 2009

SOURCE: ac not blowing cold air.

Sounds like the compressor has failed.

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Anonymous

  • 1 Answer
  • Posted on Jun 11, 2009

SOURCE: Ac compressor won't kick on

Just had the same issue and posted. Just found the solution is the control module in the dash. Went to the junk yard since new is expensive on these units. Plugged new unit in, was able to charge a/c now blows cold as ice.

Anonymous

  • 2 Answers
  • Posted on Sep 22, 2009

SOURCE: Car AC stopped blowing cold, compressor turns on, Freon at 45

check the thermo control amp, it is a sensor that keeps the evaporator from freezing. I had that problem on my 2000, it's a common nissan problem, google nissan ac problems.

Anonymous

  • 3 Answers
  • Posted on Dec 05, 2009

SOURCE: raer a/c works but front blows hot air on my 99 tahoe

My 04 tahoe had to have the a/c door actuator replaced as well, same problem. 100.00 part from dealer if you want to do it yourself.

magoly auto

  • 303 Answers
  • Posted on Jun 05, 2011

SOURCE: AC will blow cold air for a few minutes then start

you have moisture in the system this causes your expancion valve to freeze up an stop working, thats why it works for sort time and when it de-freezes stars working again. you need to do a EVAC & RECHARGE with a good AC service equipment, specially attention to pull vacumm por at least 20minutes so you get all moisture out of the system.
Good luck

Testimonial: "Thank you Magoly, its working Thank you very much."

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Related Questions:

0helpful
1answer

I have a 95 chevy cheyenne. My ac pump doesn't

Have you checked to see if the system has enough freon ?
If the system is low or empty the low pressure switch will prevent power from going to the compressor clutch.
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2002 Chevy Express 1500. A/C Full of freon, fan blows hot air and not cold at all. What can it be?

check all fuses first. does ac compressor come on? if not, unplug pressure switch in low pressure line near where you add freon and short across pigtail. comes on now and cools? replace switch. if not plug back in. apply manual voltage to ac compressor. comes on and cools? if not compressor or clutch is bad. if it does, check ac relay. that's about all you can do with limited tools in the driveway. if no progress has been made, time to take it to the pros.
5helpful
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I have a 2000 Chevy Tahoe Z71 old body 5.7L engine it was parked for one week and the a/c compressor clutch does no kick on the a/c light comes on when the switch is on i tried to jump the low pressure...

check for power at compressor to eliminate it,if you have power at plug the compressor is bad,then you need to make sure the system if full of freon,it won't kick it will low freon
0helpful
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I have a 02 chev tahoe,with dual a/c.no cold air is blowing.compressor is cycling on/off at a fast pace.i see 2 ports on thin a/c line,but i think these are high pressure line ports?im tring to find low...

freon level is low . One of those 2 ports u see will be the one u want. It will be the smaller of the 2 as the refill hose will only lock onto the correct fitting.
2helpful
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96 Tahoe no Cold Air

YOU NEED 28 PSI ON LOW SIDE AND ABOUT 190 ON HIGH SIDE.YOUR REFRIGERANT IS LOW THAT WHY COMPRESSOR CYCLING ON AND OFF.
0helpful
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My 2002 Sentra's AC just blows warm air. The

You most likely just to to have the freon recharged.
0helpful
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My ac doesnt work in my 2001 tahoe. i bought freon for it. the compressor is not kicking on when i turn the ac on, but the gage shows in the red when i hook it up to try and put freon in it. i shot a...

the a/c system needs a minimum pressure before the system will run. the system must have a leak so just buying freon may last a day or a few months depending on the size of the leak. also leaking freon into the air is ozone depleating, it should be recovered properly.

the system needs to be recoved of all freon. vacuum to -30psi held checked for leaks. (uv dye or nitrogen and soapy water). leaks fixed. vacuum to evacuate moisture and air. refilled with proper amount of freon (too much or too little make the air not as cold).
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Trailblazer A/C clutch blows hot !

If it is cycling then its low on freon .. Try to put in one can and this will take care of your problem.. The cycling is due to being low .. The clutch is operated by a pressure switch .. when the clutch kicks in it pressures up but not enough freon will kick it back off and starts over again ... Thanks Jerry
3helpful
1answer

Ac compressor won't kick on

Just had the same issue and posted. Just found the solution is the control module in the dash. Went to the junk yard since new is expensive on these units. Plugged new unit in, was able to charge a/c now blows cold as ice.
1helpful
3answers

A/C blowing hot air. Compressor activates and system has pressure.

Could be the expansion valve. That's what allows the temperature to actually drop in the system - the contents of the AC system are under pressure, and are at a certain temperature. When the freon goes through the expansion valve, the pressure drops suddenly and dramatically, which "flash chills" the freon, allowing the air to blow cold. If it fails, you may get lukewarm air from the AC despite everything else working. Also though, check to see whether the AC evaporator fan (underhood) is working - on some cars, if it doesn't turn on, the compressor won't be run enough to cool the air.
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