Question about 2002 Chevrolet Astro

2 Answers

2000 Astro van - vent door that controls flow of A/C to blow out of dashboard vents does not function. A/C and heat work. All other pneumatic actuators seem to work. Repalced the specific vent door actuator and still does not work, I am guessing that the vacum to close the actuator is not strong enough, a leak, or the vent flwo switch is failing?

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  • mattingly741 Jul 27, 2008

    I don't have vacuum at the dash control and none of the actuators are operating. I don't know where to start a diagnosis without a diagram or description of the vacuum system.

  • mrwam Aug 31, 2008

    I have a 2000 Chevrolet Astro van. The blower motor works, but when the AC is engaged, the cold air does not come out of the AC Vents. It only comes out of the windshield defog vents and the heater vents. Everything else seems to work right.

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2 Answers

I had the exact same problem on my 200 Astro.

I took it to the local dealer who replaced the hose for a total of $98.00

Posted on Sep 21, 2008

The problem is a 1/8 diameter hose that runs from the front of the engine over the top and connects at the rear of engine on the drivers side. It is a vacuum hose #GM15967970 It cost about $6.22 at your GM dealer. Hope this helps Bill. My E-Mail is Uflyups@aol.com
This was posted on a problem with a 2002 astro, I do believe it is the same fix. A simple vacuum hose, It is difficult to route through the engine

Posted on Sep 01, 2008

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Cold& warm/air would not blow out in any vents. Put in new direction switch, air blow in all vents except the defrost vent. Swtich on defrost and it blows in dash vents in your face and nothing coming out...


The switch that controls the air flow is either operated /controlled using either wire, pneumatics, or electrically driven/controlled. Make sure that all of the connections at the damper are intact and working properly. Pneumatically driven is usually the most common on todays vehicles, so make sure you don't have a vacuum leak on any of the damper hoses.
I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

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1 Answer

I have 2000 astro van and I'm not getting heat, I changed thermo stat and flushed heater core. Still no heat, whats the next step?


Feel your heater hoses. If both are hot, the core is circulating. If only one is hot-poor or no circulation of the core.
If the heater core is circulating, the temperature blend door may not be working to let blower air pass across the heater core, and into the vents. If vacuum operated, watch the vacuum valves as you move heater controls-you may spot the problem. Check that the vacuum line from the engine to the control switch is working and still connected. If not operated by vacuum, the controls may have cables to the heater case or may be electrically operated. You'll just have to scope it out. Good luck.

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1 Answer

REPLACED BLOWER MOTOR CONTROL MODULE...Now blower is working but not very much air flowing out of vents! Fan speed is working...it heat and cools. but still not adequate air flow from the vents ..2000...


check your blower hoses to see if one or more have come loose or got redirected or the selector switch isn't functioning properly (is it blowing better on defrost as opposed to floor vents, or forward vents, etc.)
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1 Answer

It seems that the A/C fan is blowing with less force/power on the driver side of the interior (both front and back). Is this possible and what could be causing this problem? Thanks.


Under the dash is a heat/a/c box, which has pneumatic doors that open and close allowing either heat or cold a/c air to flow to the vents of the vehicle.
If a door is not opening all the way this can happen, could be a sticking door or vacumn control module.
If the doors seem ok I would then check the duct work that carries the air to the vents on the drivers side its possible it is half off on the backside of the vent or the heat/a/c box.

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1 Answer

2000 chevy astro cargo van. the heat registers on the gage but little comes out and only out defrost. thermostat????


If it is blowing hot air out of the defroster and not out of the heater vents then the door that directs the heat from the defroster isn't working properly it is blocking the heat from going to the heater vents. Also check the cold air door. It sounds like it isn't closing all the way to shut off the cold air and not letting the hot air pass.

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2 Answers

No heat blows air ac works


2 possibilities. 1 - the heater system isnt getting adequate hot water flow from the engine and not heating the air for your heater to function. This can be due to a defective heater control water valve, a plugged heater core, a disconnected or plugged heater hose.
2 - the system is in fact getting heat, but your heat is bypassed/lost due to dashboard vent and blend door errors breakage common with that era of jeep. have the valve/cor/heater hose flow checked. If that doesnt show issues, have the vent control system checked for blend door or dash door breakage. beware, its alot of labor to change the dash solenoids when they brake, ALOT of labopr (6 hours or more!) so if you are committed to fixing it because a solenoid and/or sensor broke in there, I highly recommend you chaneg ALL solenoids wuith new rather than risk another breaking in a month and the 6 hours of labor must be repeated.

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1 Answer

2000 chevy astro van blower


Yes it could but also check under the hood because it is a very common problem for a vaccumm line to come unhooked causing this problem. Hope this helps, Allen, swiftautorepairs.com

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3 Answers

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2 Answers

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There is a flap in your heater box that is controled by your vent switch by your heater controls. listen for a vacuum leak. that is common and hopfully the problem. there is vacuum lines that control the vent door that redirects the air to your vents.

Has your dash been messed with recently? if so i would check there first. you should hear a hissing if thats the problem.

Otherwise these also are common for that door flap to break and not switch NE more. thats the only 2 things that i can think of off th wtop of my head to be the problem. this would require the whole dash to come apart if its this problem

Michael
ASE certified

Feb 22, 2009 | 1999 Chevrolet Astro

2 Answers

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i suspect the vents are controlled by vacuum and are not opening due to a vacuum leak.

Robert

Sep 01, 2008 | 2000 Chevrolet Astro

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