2016 hvac whistle

[bbond]

Vehicle : 2016 Crew Cab LTZ 1LZ

Miles : 7000

Problem :
While driving on the Highway, a whistling noise can be herd coming from the dash area . This happens between 65-75 mph . The sound can only be herd when the a/c is on . Sometimes it can be herd when pulling outside air , but it mostly occurs while on re-circulate .

The truck is currently at the dealership and has been for about a week . So far they have completely replaced the front windshield , and are now removing the entire dash for further inspection .


Has anyone experienced this , and or can possibly point me into a positive direction . Getting tired of the loaner vehicle and would really like my vehicle back .

[hairybumcrack]

My 14 does this as well.....3 recalls to date and it has less than 20K miles.

[bbond]

My 14 does this as well.....3 recalls to date and it has less than 20K miles.

thats crazy ...

 

truck is still in the shop . was told they have no idea whats causing the noise .

[DirtyMarcus]

My 14 does it when my wife closes the far right side vent. Since the vents dont close air tight the air still pushes through the tight space and whistles. It has to be a duct issue, either a vent is sticking or maybe the plastic in a duct has an imperfection that is causing the high velocity air to "whistle". Possibly a blend door getting stuck too.

[bbond]

My 14 does it when my wife closes the far right side vent. Since the vents dont close air tight the air still pushes through the tight space and whistles. It has to be a duct issue, either a vent is sticking or maybe the plastic in a duct has an imperfection that is causing the high velocity air to "whistle". Possibly a blend door getting stuck too.

all vents are wide opened .. my guess is the blend door . hopefully i should know something this week ... tired of my malibu rental

[pm26]

thats crazy ...

 

truck is still in the shop . was told they have no idea whats causing the noise .

Could it be crappy workmanship?

[bbond]

Could it be crappy workmanship?

quite possibly . will let yall know once i get an answer back ..

[Brews02ws6]

Mine does this without a/c on. Just noticed it during a 12 hour road trip.

[BigBadSierra]

I wonder if its the same thing as my mothers Impala had.

 

It whistled from they day she bought it in 2013 until the beginning of this year when a bar code label came flying out in chunks.

 

Now it sounds normal excepts spits out little chunks every now and then.

 

I think the part label was near a two connecting part and got folded into the air flow path.

 

So it whistled until it broke off.

[bbond]

update : truck is still in the shop . they have replaced all door seals and completely replaced the blower housing . the whistling noise has now changed pitch but is still present . supposedly they have a master mechanic for GM that will be coming in this week to check it out . really hoping they can fix the issue .. really don't want to go through the hassle of swapping vehicles .

 

the dealership told me if they could light a candle in it and let it burn to the ground they would ..

 

they did offer to pay 2x months of truck note .

[dfelicia]

Vehicle : 2016 Crew Cab LTZ 1LZ

 

Miles : 7000

 

Problem :

While driving on the Highway, a whistling noise can be herd coming from the dash area . This happens between 65-75 mph . The sound can only be herd when the a/c is on . Sometimes it can be herd when pulling outside air , but it mostly occurs while on re-circulate .

 

The truck is currently at the dealership and has been for about a week . So far they have completely replaced the front windshield , and are now removing the entire dash for further inspection .

 

 

Has anyone experienced this , and or can possibly point me into a positive direction . Getting tired of the loaner vehicle and would really like my vehicle back .

My new 2016 Yukon XL does the same thing. So did the 2013 Ford Raptor it replaced. I just turn up the radio. :-) I don't like the idea of them ripping apart the whole truck to find the cause (blend door is my guess).

[bbond]

truck was in shop for 34 days . dealership told me to come pickup the truck because they were out of ideas . i am now waiting for a field supervisor to contact me . hopefully should get an answer in the next couple of weeks .

[pm26]

truck was in shop for 34 days . dealership told me to come pickup the truck because they were out of ideas . i am now waiting for a field supervisor to contact me . hopefully should get an answer in the next couple of weeks .

And we can guess what that answer will be: "NORMAL"!!!!

[bbond]

And we can guess what that answer will be: "NORMAL"!!!!

lol if that's what he says.... he is getting the boot wherever we are on the road .

[bbond]

September 13th . truck went back into the shop. field service adviser acknowledges problem . truck still in shop now.