Jump to content

AC whistle sound?

WhiteLTZ14

Recommended Posts

WhiteLTZ14 Enthusiast

WhiteLTZ14

Posted
Posted

Hey guys! Im having issues with my AC... when im driving 50+ mph and have the AC recirculating button on... i here a whistle sound and when i turn off the recirculating button off the sound goes away. Does anyone know what it might be? Or have any of you had that issue before?. It's CC 2WD LTZ silverado if that helps.

WhiteLTZ14 Enthusiast

WhiteLTZ14

Posted
  • Author
Posted

My 2011 Sierra has a motor noise that almost sounds like a chirpy whistle. Only does it when its in auto mode and kinda mid range speed.

I messed with all the buttons and I narrow it down to when the air is recirculating. Im wondering if the gates are not closing all the way? It only does it when im going at 50+ mph if i go below speed i wont hear the whistle noise. My silverado is 2014.

WhiteLTZ14 Enthusiast

WhiteLTZ14

Posted
  • Author
Posted

Took it to the dealer and tech said they couldnt replicate the sound. Took the tech for a test drive i heard the whistle along with another guy that works at the dealer he heard it too but the tech said he couldnt. He said he can take the dash apart and look in there and see if anything is wrong but he recommended not too. They said they will call GM and see if they have any issues with that or what they recommend to do.

pm26 Senior Enthusiast

pm26

Posted
Posted

There is a whole thread on recirculating door apparently not closing all the way and causing fumes and other road smells to enter the vehicle. It seems that "whistling" would be the sound of air outside moving past a partially closed recirculating door. Another great redesign by GM. They cannot leave what works alone.

WhiteLTZ14 Enthusiast

WhiteLTZ14

Posted
  • Author
Posted

There is a whole thread on recirculating door apparently not closing all the way and causing fumes and other road smells to enter the vehicle. It seems that "whistling" would be the sound of air outside moving past a partially closed recirculating door. Another great redesign by GM. They cannot leave what works alone.

I found the thread you are talking about and im going back to my dealership and see if they can close it all the way instead of 90%. Hopefully that will fix it.

8.1HD/ALLISON Senior Enthusiast

8.1HD/ALLISON

Posted
Posted

The recirculate door does not close all the way so that you always have a constant positive pressure of fresh outside air. Otherwise you would suffocate from lack of oxygen, in theory. I dont know that the trucks are that sealed, but thats why.

 

Sent from my LGL86C using Tapatalk

 

 

  • 2 years later...
Brian2015 Enthusiast

Brian2015

Posted
Posted

U sure you don't have a dash vent closed? Mine sounded like a jet engine, then I realized my kids closed off the passenger side vents.

EFLine Enthusiast

EFLine

Posted
Posted

I have the same issue and cant figure it out. Will have to check this and see. Truck is in the dealership now getting work done and have a 2016 suburban as a loaner and have the same issue.

 

do you have the link to the thread referenced above?

ricker6869 Enthusiast

ricker6869

Posted
Posted

U sure you don't have a dash vent closed? Mine sounded like a jet engine, then I realized my kids closed off the passenger side vents.

I had this exact issue...I thought my filter was clogged...turned out to be a almost fully closed vent on pass side. Never crossed my mind until I went looking to change the vent filter....lol. Very noticeable whistle sound.

  • 2 years later...
dcarbs Enthusiast

dcarbs

Posted
Posted

Did you guys ever figure this out? My 2019 is doing this exact thing....

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.3k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,739
    Total Members
    8,960
    Most Online
    chfkief
    Newest Member
    chfkief
    Joined

  • Who's Online   2 Members, 0 Anonymous, 1,538 Guests (See full list)

  • Latest Articles

  • Posts

    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      Fred was in the fertilized egg business. He had several hundred young pullets, and ten roosters to fertilize the eggs He kept records, and any rooster not performing went into the soup pot and was replaced. This took a lot of time, so he bought some tiny bells and attached them to his roosters. Each bell had a different tone, so he could tell from a distance, which rooster was performing. Now, he could sit on the porch and fill out an efficiency report by just listening to the bells. Fred's favourite rooster, old Butch, was a very fine specimen, but this morning he noticed old Butch's bell hadn't rung at all! When he went to investigate, he saw the other roosters were busy chasing pullets, bells-a-ringing, but the pullets, hearing the roosters coming, would run for cover. To Fred's amazement, old Butch had his bell in his beak, so it couldn't ring. He'd sneak up on a pullet, do his job and walk on to the next one. Fred was so proud of old Butch, he entered him in the City Show and he became an overnight sensation among the judges. The result was the judges not only awarded old Butch the "No Bell Piece Prize," but they also awarded him the "Pulletsurprise" as well. Clearly old Butch was a politician in the making. Who else but a politician could figure out how to win two of the most coveted awards on our planet by being the best at sneaking up on the unsuspecting populace and screwing them when they weren't paying attention. Vote carefully in the next election, you can't always hear the bells.
    • chfkief
      FS: Black Bear Performance AutoCal Tuning System

      By chfkief · Posted

      Do you still have?
    • 3CarSeatDad
      High Country Suburban build confirmation

      By 3CarSeatDad · Posted

      Can someone confirm if the GM order workbench terminal is able to validate a custom build sequence:   1) Initialize the Allocation Base: Open a new vehicle build queue, select the 2026 Chevrolet Suburban 4WD, and pick the High Country (3LZ Preferred Equipment Group).   2) Select the Diesel Powertrain: Go directly to the engine configuration screen and choose RPO code LZ0 (3.0L Duramax Turbo-Diesel). Ensure it maps to the MHS 10-speed automatic transmission.   3) Deploy the Seating Swap: Navigate to the Interior Options screen and enter RPO code ATT to replace the standard captain's chairs with the power-release 60/40 bench seat. Because you are not trying to force a separate luxury or air-suspension bundle, the standard, premium D07 Fixed Floor Console remains active. The system will accept this change immediately without triggering a warning message.   3)Apply Heavy-Duty Hauling Capability: Input RPO code NHT (Max Trailering Package). The commercial terminal will automatically bundle the required trailering hardware and software modules to support the diesel engine's maximum towing capacity.   5) Layer the Premium Tech and Glass: Separately add code C3U (Panoramic Power Sunroof) and code UKL (Super Cruise) to the order screen.   6) Run the Final Validation: Click the "Validate Order" button at the bottom of the interface.
    • revmanii
      Looking at ordering a '26 WT because I want a std cab, std bed

      By revmanii · Posted

      Spent the last hour or 2 googling and reading up on the spacer thing. I don't like the loss of thread contact on the slip on spacers, but it appears you can get "extended" lug nuts that reach into the hole of the wheel to get back the lost threads. Looks like the only true hubcentric slip on spacers are at least .375". I'd want as little as I could get away with and don't want to cause other clearance issues going any thicker. Bora seems to offer what appears to be a well made .375" spacer and extended lug nuts. I searched here and did find a couple threads recommending Bora. But not cheap. By the time I buy spacers and lugs, new TPMS sensors, then pay a tire shop to install the new sensors, I suspect I'm going to be in over $400. Thinking about running out and getting some washers to put behind the wheel to see if .375" is enough to clear calipers, turn lock to lock without rubbing, and to see if the wheels/tires look strange pushed out a little. This would just be to check fitment.
    • Core-Lokt
      Road Master Active Suspension

      By Core-Lokt · Posted

      Roadmaster makes some quality parts; I have their sway bar. I considered the RAS, but I ended up bagging. I didn't know what kind of ride I'd get with RAS, and the bags have interior jounce bumpers, so I can run 0 pounds pressure. I figured I'd have the best of normal suspension ride with assist on-demand. But it seems you got pretty much the same in one item.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...