Need help on noise from 2005 Yukon

[misplaceddesertrat]

Hello everyone, we have a 2005 Yukon that has developed an odd noise. We are now getting a humming type noise while the truck is moving. It does change pitch some at low speeds, eventually dieing out as the truck comes to a stop. It sort of reminds of having a card in the spokes of bike. Once we reach 35-40 MPH it is no longer noticeable, this could be due to other noise above that speed. I've listened out the window at 5-20 MPH and it sounds like it is coming from the rear of the truck.

Does anyone have any experience with this type of noise?

Any suggestions on where to start with diagnosis? Rear wheel bearings? Differential? Etc...

Thanks for help

 

[misplaceddesertrat]

Forgot to mention that it is a 1500 2wd with 5.3l with ~130k miles.

Hello everyone, we have a 2005 Yukon that has developed an odd noise. We are now getting a humming type noise while the truck is moving. It does change pitch some at low speeds, eventually dieing out as the truck comes to a stop. It sort of reminds of having a card in the spokes of bike. Once we reach 35-40 MPH it is no longer noticeable, this could be due to other noise above that speed. I've listened out the window at 5-20 MPH and it sounds like it is coming from the rear of the truck.

Does anyone have any experience with this type of noise?

Any suggestions on where to start with diagnosis? Rear wheel bearings? Differential? Etc...

Thanks for help

 

[NaomiSays]

Could be rear wheel bearing or pinion or carrier bearings, check the u joints while down there. Also could be simpler like ebrake cable rubbing.