V4 to V8 Squeak/Chirp

[unknown78]

I have been hearing this chirp/squeak when the radio is off and quiet in the cabin. I have finally found out when it does it but not sure what it is. Everytime going from V4 to V8 I hear a chirp/squeak (doesn't do it V8 to V4). You can hear it Inside and outside if the window is down.

Squeak.mp3

Squeak.mp3

Squeak.mp3

Squeak.mp3

[jimlem]

That's the 4-5 to 2-3 kick-down gerbil. Just oil his little running wheel and it will go away.

[rziler]

It's the flapper valve in the exhaust. Mine is getting replaced under warranty this week.

[BigBlueLB756]

Everything (and more) you'd want to know about this problem:

 

http://www.silveradosierra.com/ecotec3-5-3l-v8/v4-to-v8-squeak-t293481.html

[RonK99]

Fixed my 2015 Sierra flapper SQUEAK with Fluid Film!

After the 2nd application no more SQUEAK!

Doesn't burn off on highway either as i drive 120kms return to work on the highway...no SQUEAK

 

https://www.canadiantire.ca/en/pdp/fluid-film-rust-corrosion-prevention-0381567p.html

 

Edited September 9, 2020 by RonK99

[Ryan Patterson]

On 9/9/2020 at 4:04 AM, RonK99 said:

Fixed my 2015 Sierra flapper SQUEAK with Fluid Film!

After the 2nd application no more SQUEAK!

Doesn't burn off on highway either as i drive 120kms return to work on the highway...no SQUEAK

 

https://www.canadiantire.ca/en/pdp/fluid-film-rust-corrosion-prevention-0381567p.html

 

Where do you spray it? I’m finding this myself! Chirp chirp... just picked one up and it does it all the time