((((( i need help!!!))))))))

[bigg]

I have a 1999 z71 tahoe...inside the cad of the truck i keep hearing a noise kinda like a loud warning chime??? Coming from the rear of the cab...does anybody know what im talking about ??? Or have any suggestions?? Thanks in advance ..bigg

 

[T-Bagg]

Is it the same chime as when you have the door open or leave your lights on?

 

[bigg]

no..its not really a chime...just a low pitch whistle '' like hummm ''..????????? it only happends while driving....

 

[T-Bagg]

If you could get a sound recording that might help. "Hummm" could come in a lot of different tones.

 

[MetalStorm]

is it coming from a speaker?

 

[T-Bagg]

Bad seal? Window seal? Weather stripping? Got an air leak maybe.

 

[bigg]

i think it might b coming from the rear ac by the tail gate???

 

[blackcoffee]

Fuel pump whine?

 

[bowtiefreak]

small animal stuck in the truck?