Intermittent Buzzing from Passenger Rear Quarter Panel

[sapforuandme]

I have 2000 Yukon that has been having a loud intermittent buzzing from under the rear quarter panel interior cover. I was thinking it might be the fuel pump relay???

any thoughts?

 

[dave/angie]

Your fuel pump relay should be out front under the hood. It's probably something to do with the rear AC unit. It should be located on the passenger side in the rear. You should be able to remove some panel to see what it is....