Question about 2000 Chevrolet Silverado 1500

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2000 Chevrolet Silverado 1500, air only blows out of defrost vents and not front air conditioning vents

Posted by Anonymous on

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009

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Anonymous

  • 90 Answers

SOURCE: heater control stuck blowinf hot air out vents

did you cheked if there is enough refrigrant ( freon ) in your tubes by measuring the pressure . if there is you may need to check your condensor its may be clogged and not letting enough air comes through to cool the refrigran

Posted on Jun 01, 2009

Anonymous

  • 432 Answers

SOURCE: All Air Conditioning blows our the defrost vents

Some thing you could look at would be this. The control is usually fed by a vacuum line or small hose thats is connected to your intake manifold.
With a cold engine,look for a skinny vacuum hose that runs from the intake toward the fire wall . It should be going inside the cab and connecting to the A/C vent control.Some times the hose becomes disconnected or splits or cracks due to heat under the hood.
Thats usually the trouble.
I hope this helps you.

Posted on Oct 06, 2009

austintdavis

  • 12 Answers

SOURCE: 1978 Chevrolet Corvette Air Condition Problem:

I had this same problem with my 78. If your have vacuum going to the control panel and the control panel is plugged in correctly to the vacuum hoses, it is either a hose problem or the actuator motor used to open that particular door is no good.
I would get some vacumm tubing and replace that first since it is cheapest. You will have to take apart the dash by removing the radio, the guage cluster and a few other parts. Make sure not to confuse the hoses as each vacuum motor must coincide with a numbered "port" on the control panel. This is a pretty big job, so don't start if you don't have a full day to jack with it. If you replace the hose and it still won't work and the control assembly is hooked up to the correct hoses, try changing the actuator motor. If you need to know which hose goes where on the operating assembly, let me know and I'll put it up. It is nice once it works correctly. I had to replace everything though, including the contrrol assembly.

Posted on Mar 30, 2010

Rick Lance

  • 12 Answers

SOURCE: air conditioning not blowing thru the vents

There is a black vacuum hose in back of the glove box toward the top connected to a gray hose about 1/8 thick.You need to check to see if there is vacumm there.If yes then you need to take the bolts off to be able to tip the dash back enough to see all the vacuum hoses.Make sure they are all connected.It was alot of bolts but its is the best way.I had a hose off going to one of the acuator doors.Glued it back on and works great

Posted on Jul 17, 2011

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2 Answers

02 SILVERADO. AIR ONLY BLOWS OUT DEFROST VENTS. REPLACED CONTROL PANEL. NO LUCK


I had a similar issue on an 05 silverado. Air would only blow out of defrost vents. But this worked for me:

1) Unplug HVAC fuse for 10-30 seconds
2) Start truck
3) A/C comes out defrost - wait about 10 to 15 secs
4) A/C then starts coming out the floor vents for about 5 seconds
5) A/C then starts coming out the dash vents.
6) While the A/C is coming out the dash vents, turn A/C OFF (otherwise it cycles back to defrost for good).
7) Turn truck OFF
8) Restart truck and it should work fine

(Found solution on another forum from user "ccurran")

May 15, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

When i turn my defrost on why does my air blow out the vents and not the defrost


It should blow out where the windshield is, and a little through the vents, maybe the vents inside the dash are stuck or broken

Nov 20, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

04 silverado a/c, htr. controls. Only blows through defrost vents


sounds like your door blend actuator which is under the dash and a pain in the **** to replace

Feb 20, 2010 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

On my sons 2000 chevy silverado 4.8 liter....the heater works fine....but when i switch control to defrost....only cold air blows out defrost vents....any help would be appreciated.


the heater & defroster baffles are controlled by electic motors that open and close the baffle (doors) to let the air to the heater and defroster vents. the motor must be bad

Jan 12, 2010 | 2001 Chevrolet Silverado

1 Answer

My Defrost doesn't work


Check to see if the duct hose to the defroster vents has come loose. If air is blowing out under the dash when you have the control set to defrost, then this is likely.

Dec 13, 2009 | 2003 Chevrolet Silverado 1500

1 Answer

Air blows out thru the vents but just no hot air, aslo i have to hit the dash for the air to come out thru the dash vents at times.


sounds like bad acuator motor, this is what moves the door in heater box to set hot or cold air, and other motors to set air to blow thru defrost, vent or floor. good luck.

Oct 10, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Upper air conditioning does not blow out just lower 97 chevy 1500


Hi,I will try to assist you if I can,You most likely have a directional vent door actuator motor not working,if I can help let me know,roniecon@gmail.com

Jul 19, 2009 | 1999 Chevrolet Silverado 1500

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