Howling noise

[LMarshall]

Hi Guys,

Has there been a concensus reached as to the howling noise heard at speeds between 20 and 30? I have that nosie and it's much worse when cold. My dealer said it was the turbo but it's not that as I hear it when coasting down a hill.

I have a '04, 3500 Quad Cab , 8' bed with 21,000 miles.

Thanks for any help.

Larry

 

[Mundgyver]

Check your clutch on the Radiator FAN

 

[LMarshall]

I'll do that. I've been reading in past posts about changing the driveline bearing or carrier bearing. Thanks.