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Noise After Cabin Air Filter Replacement

Hey_Fam
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Hey_Fam Enthusiast

Hey_Fam

Posted
Posted

So I replaced my cabin air filter yesterday. The filter was moderately dirty. After replacing this i get a humming sound when the HVAC blower is on high. At lower speeds there is no sound. After doing some research it seems this is common and something must have fell down when removing the old filter.

 

Does anyone have insight on how to get the debris out of there?

 

thank you!

bgweed Enthusiast

bgweed

Posted
Posted

I have read elsewhere that if it's all the way down near the blower, you have to take apart a good amount of dash to get to it. If you have a vacuum with a long hose, you could try to slip that down the air duct to suck out any leaves or other items.

 

For others who have not yet changed their filter, I took a plastic cutting board sheet and trimmed it to 9" wide, then used that to catch items that would have otherwise fallen down the air duct as I took out the filter.

 

2pyc0mf.jpg

 

2q2pezp.jpg

  • Like 3
Sean Neilan Enthusiast

Sean Neilan

Posted
Posted

So I replaced my cabin air filter yesterday. The filter was moderately dirty. After replacing this i get a humming sound when the HVAC blower is on high. At lower speeds there is no sound. After doing some research it seems this is common and something must have fell down when removing the old filter.

 

Does anyone have insight on how to get the debris out of there?

 

thank you!

Exact same thing happened to me about 2 months ago. Wasn't able to retrieve the debris myself. Still have the whirring noise when the fan is on high. Very annoying.

15_silverado Enthusiast

15_silverado

Posted
Posted

I have read elsewhere that if it's all the way down near the blower, you have to take apart a good amount of dash to get to it. If you have a vacuum with a long hose, you could try to slip that down the air duct to suck out any leaves or other items.

 

For others who have not yet changed their filter, I took a plastic cutting board sheet and trimmed it to 9" wide, then used that to catch items that would have otherwise fallen down the air duct as I took out the filter.

 

2pyc0mf.jpg

 

2q2pezp.jpg

 

Excellent tip, thank you.

I will do this when that time comes.

Hey_Fam Enthusiast

Hey_Fam

Posted
  • Author
Posted

just wanted to update this thread. It was difficult, but i able to get the debris out. There were two leaves down in there. With some persuasion i fit half my hand in there and used my fingers to grab the leaves.

  • Like 1
T-Town-Z Enthusiast

T-Town-Z

Posted
Posted

The same thing happened me the first time I changed out the filter. Kind of a dumb design that there is no clearance to slide out the old filter without scraping off the debris on top, to fall into the blower motor !

  • 1 month later...
Hey_Fam Enthusiast

Hey_Fam

Posted
  • Author
Posted

very easy to do. just use the idea from above so you don't get anything in the fan housing.

sdeeter19555 Senior Enthusiast

sdeeter19555

Posted
Posted

I've had luck using tubing attached to a shop vac to suck up debris from the heater box...large stuff will get sucked against the end and you pull those out like a magnet, small stuff like needles will pass through a 1/2 pieces of tubing. I had to do this with a Subaru that had been parked under a pine tree its entire life.

 

Sent from my SAMSUNG-SM-G900A using Tapatalk

  • 10 months later...
Arcterrax New Member

Arcterrax

Posted
Posted

Lmao you guys are all great. This was drivong me nuts. Actually I was driving with nuts in my 2014 Silverado after changing the cab filter but I removed the blower motor grabbed my nuts out and now I am back in business.

20180227_160643.jpg

  • Like 1
  • Haha 1
a_salazar08 Enthusiast

a_salazar08

Posted
Posted

Same thing happened to me a few months ago. I took it to a dealership and they fixed it in about 10min to remove the debris.

 

The technician said that it's a good idea to put some paper underneath the filter as you remove the dirty one because some debris may fall down as you pull it out and it gets pushed in as you put the new one in.

 

  • 10 months later...
DDAmerica New Member

DDAmerica

Posted
Posted

Yep, I know the woes. I found a 1.5” piece of styrofoam in the fan. Fixed it right up after I pulled out that piece of debris.

  • 1 month later...
  • 6 months later...
Kerry H New Member

Kerry H

Posted
Posted

Duct taped a 3/4” plastic tubing to shop vac hose to assist in removing whatever debris that was causing the roar. It worked!

2016 GMC Denali 1500.

  • Like 1

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