Question about 2000 Chevrolet Silverado 1500

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On my 2000 chevrolet silverado the ac fan can be on high, I can hear it blowing loudly but yet very little air comes out of the vent. What is the problem?

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  • BB1BUD May 11, 2010

    DO YOU HAVE CABIN AIR FILTERS

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  • Master
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Check for debris in the blower fan

Posted on Jul 16, 2009

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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

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I have a 1994 Silverado 1500. the AC works but a vent or something closes after 20 minutes or so. The fan continues to blow but the air stream is obviously restricted. I can turn off the AC and turn on the...


could be a leaking servo pipe. if it is knob turn type. motor failing on electric type. or a warn linc on vent control. very hard to find out you need to get your hand round the back and feel for the motor/s. on electric type. knob type with engine off move the vent control should hear a hissssing sound if no hissing sound then it is leaking.

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Cabin air vents blow loud and weak?


Possibly the fresh air to re-circulation door is either binding or is broken.

Jun 06, 2013 | 1999 Chevrolet Silverado 1500

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2000 Chevy silverado 1500 blower not blowing


there are two or three things to check first the fuse in the fuse box next there is a resistor that controls the fan speed that will go bad and last the blower motor itself if you can get to it you can run a twelve volt source to the hot or positive terminal and it should come on if it is still working .

Feb 28, 2012 | 2000 Chevrolet Silverado 1500

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My A/C used to blow out very cold and with lots of force at the vents, now I get cold air but you can barley feel the air coming out of the vents. The fan sound like it is on high but very little airflow....


It sounds like you have a blend door issue.Try cycling the air to blow on different parts of the cab ie: defrost,to floor to vent.if you have cold air blowing good on all selections and you know your motor is working on all speeds,then you have a blend door not opening.The control for that is behind the heater/ac control unit.They do go bad from time to time.You can pick up a replacement at either a dealer or a Auto Parts place that sells GM or AC DELCO parts.

Aug 23, 2011 | 2002 Chevrolet Silverado 2500HD

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Rear a/c heat vent do not work


Sounds like the flapper valve for the rear heater/AC core is not doing its job to send the air through the AC core when called for.

Another clue of this is the fact that the air is coming out on the lower vents when it should be up high fro AC.

Have someone listen back by the fan inlet in the back usually on the right while you switch between AC and heat to see if they hear any noise or change in air flow.

Worst case is that the interior panel there has to be removed to service the assembly behind it.


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Air conditioner compressor runs - freon is up to proper level....not cooling??


BOTH High and low readings should be checked to have a better idea of what is going on with an AC system but based on the limited information… the compressor is not engaged or is not pumping. Below are some things I would check;

1. Check the high and low gauge readings with the AC on & set on MAX/Recirculate, middle vents with the engine at 2,000 RPM’s, blower speed on high.

2. Check the vent temperatures with a thermometer from the middle vents, far right & far left vents?

3. What is the outside temperature at the time the readings were taken?
4. Check to see if the condenser fan blowing strong?

5. Notice if compressor clutch is cylcling excessively.
Could be overcharged, not enough air going across condenser fins, compressor not pumping sufficiently… BOTH gauge readings are really needed to get a better idea.
Below are normal car AC pressure readings with 134A.

Normal readings on high and low side with AC OFF (static pressure) – Depends on outside temperature, but normally is between 80-105 PSI

Normal low side reading with AC on high speed and MAX & engine at 800-1000 RPM’s – Ranges from 25-35 PSI

Normal high side reading ranges from 200-350 PSI

Don’t assume that if adding little Freon is good that adding a lot is better! Overcharging just a little can decrease the performance of the system and possibly damage the compressor

Thank you for using fixya and good luck, keep me posted. Be glad to help you get your A/C running again soon.

Jun 12, 2010 | 1999 Chevrolet Silverado 1500

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On third compressor. Had the temperature sensor


With the AC on, the fan will come on to help the ac codensor. Why your compressor keeps crapping out is definately something to look into. If your AC is overcharged the head pressures can get pretty high and if the oil is low, that would not help either.. Good Luck.

Aug 03, 2009 | 2006 Chevrolet Equinox

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Acceleration no air, foot off gas air barely blows out vents


The vent is controlled by vacuum. Check the condition of the vacuum hose associated with the vent control. What is happening is when you decelerate, the intake manifold vacuum increases, and a diaphram is slightly pulled giving you air in the vent but very little. In normal condition the diaphram wont even pull. Solution is check for a vacuum leak in the vent control trace it coming from the intake manifold.

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2000 Chevy Z-71 A/C problems


maybe drop the blower motor and check the vents for obstructions. I worked on a friend's car this spring that had a two year-old repair bill sucked in to the blower wheel....it limited the air output but made a lots of noise in the process.

Jun 24, 2009 | 2000 Chevrolet Silverado 1500

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