High pitch whistling noise when accelerating

cozby3591 · December 22, 2018

2019 Sierra Denali makes high pitched whistling noise when accelerating. It does this daily, but intermittently.

fish_guru · December 23, 2018

Lots of us have it.

Ziggo · January 28, 2019

Yep, have it here also on my 2019 Denali Ultimate...any updates to this issues from anyone??

cozby3591 · January 28, 2019

They have resolved the issue with part #84626475 Hose 3.120 Y

Its a vent hose on the gas tank that was to small. It collapses upon itself and whistled.

eppieguy · January 28, 2019

They ordered the parts for mine just based on the information I gave them over the phone, I'm scheduled to go in on the 7th. for repair.

Chevy19 · January 8, 2020

Any update one what they did to solve the problem?

Chevy19 · January 8, 2020

On 1/28/2019 at 10:25 AM, eppieguy said:

They ordered the parts for mine just based on the information I gave them over the phone, I'm scheduled to go in on the 7th. for repair.

Any update?

eppieguy · January 8, 2020

10 hours ago, Chevy19 said:

Any update?

Mine was fixed last year, never came back, was a hose of some sort, connected to the gas filler or gas tank, I don't remember.

Edited January 8, 2020 by eppieguy

Chevy19 · January 22, 2020

On 1/8/2020 at 7:29 AM, eppieguy said:

Mine was fixed last year, never came back, was a hose of some sort, connected to the gas filler or gas tank, I don't remember.

Did it happen when you accelerating between 30 - 50 mph? Mine is doing it too

Chevy19 · January 23, 2020

On 12/22/2018 at 3:20 PM, cozby3591 said:

2019 Sierra Denali makes high pitched whistling noise when accelerating. It does this daily, but intermittently.

Did you ever get it fixed? And if you did , what did the dealership do?

Edited January 23, 2020 by Chevy19

eppieguy · January 23, 2020

18 hours ago, Chevy19 said:

Did it happen when you accelerating between 30 - 50 mph? Mine is doing it too

It's been over a year now, I do not recall the speeds but I know it was a low speed when it would whistle at me.

Chevy19 · January 31, 2020

On 12/22/2018 at 3:20 PM, cozby3591 said:

2019 Sierra Denali makes high pitched whistling noise when accelerating. It does this daily, but intermittently.

Did you ever get it fixed?

Chevy19 · January 31, 2020

On 12/22/2018 at 3:20 PM, cozby3591 said:

2019 Sierra Denali makes high pitched whistling noise when accelerating. It does this daily, but intermittently.

Did you ever get this fixed? And if you did what did they do?

Chevy19 · February 6, 2020

can anyone help me out? i just got my truck back from dealership yesterday and they replaced a filler hose for whistle noise coming from passenger side as I accelerate it happens between 35 - 50 MPH,,, can anyone help with this noise '? it only happens if i'm opening up the the throttle to get in up 35- 50 MPH quickly and then goes away. Its very strange noise, it only happens when im pressing down on the throttle and opening it up to get up to speed. ANY HELP WOULD BE MUCH APPRECIATED. ( its a brand new truck, started happening about 500-600 miles, truck has 1100 miles now on it.)

ILSilverado · February 7, 2020

On 2/6/2020 at 7:06 AM, Chevy19 said:

can anyone help me out? i just got my truck back from dealership yesterday and they replaced a filler hose for whistle noise coming from passenger side as I accelerate it happens between 35 - 50 MPH,,, can anyone help with this noise '? it only happens if i'm opening up the the throttle to get in up 35- 50 MPH quickly and then goes away. Its very strange noise, it only happens when im pressing down on the throttle and opening it up to get up to speed. ANY HELP WOULD BE MUCH APPRECIATED. ( its a brand new truck, started happening about 500-600 miles, truck has 1100 miles now on it.)

Go to the dealer and ask them to go for a ride in it with you.