Mine had that buzz noise for a while, but form some reason it stopped. However, I now hear ir in my wife's tahoe. Definfinitely will look at her's this weekend. Thanks for the heads up.

 

This is my new favorite post. I have taken most of my dash apart trying to find this noise.

 

Nice catch! How did you finally figure it out? They should have a service bulletin. .place zip tie here...lol

 

I figured it out from someone else in a another forum... And there is a TSB.... But if you ask GM about it, they have no idea at my "know all" dealership...

So I performed the actions as per the TSB and what do you know...

Last time I was into the dealer I showed them.... "Oh ya... that TSB... We didn't understand what you meant"

I don't know how more specific I could be when I said, "will you do the TSB that requires you to zip tie the wire looms away from the dipstick tube?"

 

Yeah, that seems pretty specific! lol Customer service just isn't what it used to be. I'm a production trainer for my company...some of the people that come through the door make me wonder about our future.....

 

Thank you so much!! I've been living with this rattle for the past 3 years or so. It drives me absolutely nuts and I could never seem to find the source.

 

Garcia946 posted this a while back.

Here`s some info on it....

From G.M......IMPORTANT BULLETINS AND PIs FOR TRANSMISSION TECHNICIANS:

Its on the 2007"-2011" Full Size Trucks, with the 6L80e Transmission....(# PI0522) Tick or Rattle Noise from Front of Dash, Transmission Filler Tube Cracked or Broken (Inspect Filler Tube, Replace Tube as Necessary)

Had this done on my 2011 but was already performed on my 2013 before I purchased it.

 

^^^

I have a 4.8 with a 4 spd.... :lol:

Amazing how that glitch of a noise is in both drive line configurations...

 

Yeah, that seems pretty specific! lol Customer service just isn't what it used to be. I'm a production trainer for my company...some of the people that come through the door make me wonder about our future.....

If you think you're worried, try working in healthcare! I just sat through a 2 hour class on using a new blood glucose meter that our hospital adopted. The teacher asked at some point what types of foods could elevate blood sugar and the nurse sitting next to me yells out. "Salt!" .... You coulda heard a pin drop for about the next ten seconds before the teacher finally recovered with, "Uhhmmmm.... No." I can promise you, if that's ever my nurse, I'm hobbling for the exit pronto.

 

Is it OK for me to laugh? Yikes.

 

I did the wire loom fix and it helped a lot but I still had considerable vibrations going on. As I was trouble shooting my air bag sensors I removed the plastic shield that covers the space under the engine. It sounds 100% better. No noise.

I really don't want to keep the cover off so I may either shave it down because I think it is vibrating against the frame or mount it back up with rubber washers.