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How to replace the auto climate control aspirator in a GMT800 Chevrolet Tahoe

Discussion in 'Tech How To' started by daddy, Aug 17, 2009.

  1. daddy

    daddy Administrator

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    The following are instructions on how to replace the aspirator that is a part of the auto climate control system on my 2001 Tahoe. The aspirator consists of a small fan and a temperature sensor that feed information back to the main controls to let them know what the air temp near the driver's side ceiling is.

    The reason I needed to replace this was that the fan within the sensor was beginning to fail and make random buzzing sounds that were enough to drive me crazy. Often a little compressed air can clean the blades off to reduce the buzzing but in this instance, the dirt was not the problem, the fan was simply going bad.


    The first step was to locate the aspirator's grill
    .
    [​IMG]


    The next step was to remove the grill by prying it off with a small flat-head screw driver. There are four clips that hold it in place.

    [​IMG]
    [​IMG]


    Once the grill has been removed the next step is to remove the driver's side sun visor and pull back the A-pillar cover.

    [​IMG]
    [​IMG]


    Once the visor and pillar cover are out of the way the headliner needs to be flexed down to allow access to the aspirator itself.

    [​IMG]


    The last step is to remove the old aspirator and replace it with the new. This is what the back of the part look slike and where the harness plugs in.

    [​IMG]


    Once the aspirator has been replaced, work in reverse to finish up!

    This takes all of about 10 minutes to complete.

    The part costs about $45. The part number is 25903301.
     
  2. Alljackedup408

    Alljackedup408 Shut Up Stupid

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    nice write up. i would kill if i had to listen to that noise they make lol
     
  3. Z71 Kris

    Z71 Kris Independence...

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    I think my truck has one, it has auto climate so it should, good write up!
     
  4. DofD

    DofD The devil's in the details and there are a lot of

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    Great writeup there Tobias! :thumbs: It would be pretty much the same process for the newer trucks as well. Getting into the headliner is the hard part.
     
  5. txab

    txab Don't get stuck on stupid!

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    Great write-up. Thanks!
     
  6. stuffer

    stuffer I'm NEW... What now?

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    This is a great post. But I have a problem with the rear aspirator on a 2003 Yukon. Is there a easy way to remove the one in the rear? The noise is very irritating. I have tried the lube, air etc. but still makes noise. I have to remove and replace the unit.

    Thanks for any help on this.
     
  7. daddy

    daddy Administrator

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    My guess is you'll just have to remove whatever it takes to be able to reach it from the top of the headliner.


    Sent from my GodPhone5.
     
  8. PenguinLTZ

    PenguinLTZ Administrator Staff Member

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    All those covers just pop off. You just need to be careful not to break the clips and alignment tabs. Reassemble in the same order you remove them. I have not done the aspirator, but have had the covers off doing speaker wiring, etc.
     
  9. rambin18

    rambin18 I'm NEW... What now?

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    Can I dismantle it until the part comes in? How bad does it affect the heat/air condition of the overall vehicle?

    Thanks
     

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