What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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George B

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Heard a new rattle from the passenger rear. Thought maybe since I switched from using the AC to heating it was a flap in the rear heater. Nope, every mode possible and still there. Decided to have the wife drive while I rode in the back. Coming from what sounds like the wheel well. No change in the sound with the cup holders pulled so I don’t think its inside. Decided to pull the liner down and have a look. Thought maybe a critter put a nut up there or something. Was inconclusive so I put it all back together. Will see if it goes away.
 

randeez

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George B

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Heard a new rattle from the passenger rear. Thought maybe since I switched from using the AC to heating it was a flap in the rear heater. Nope, every mode possible and still there. Decided to have the wife drive while I rode in the back. Coming from what sounds like the wheel well. No change in the sound with the cup holders pulled so I don’t think its inside. Decided to pull the liner down and have a look. Thought maybe a critter put a nut up there or something. Was inconclusive so I put it all back together. Will see if it goes away.
Nope. Still there. Of course I can't duplicate it parked. needs to be moving and sounds like it happens during body flex. Could it be a body mount?
 

Rocket Man

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Nope. Still there. Of course I can't duplicate it parked. needs to be moving and sounds like it happens during body flex. Could it be a body mount?
Unlikely a body mount. Maybe put it on jack stands under the rear axles, and have somebody bounce up and down on the rear bumper while you listen. Something obviously came loose.
 

Chert_Detective

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the trick is...go faster

this is the last slip i had before boost, right lane*. against my friends ecoboost with nothing but a tune lol :banghead:

Yeah my mph is there, on both the 1/8 and 1/4. I'm thinking with the new converter and some more trans tuning and it can get there.

You were also at like 300'DA that pass hahah.
 
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George B

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Unlikely a body mount. Maybe put it on jack stands under the rear axles, and have somebody bounce up and down on the rear bumper while you listen. Something obviously came loose.
Unfortunately it doesn't seem related to suspension movement like a bad bushing or sway bar link would. It is related more to bumps and or body sway. For instance, I cross a speed bump on an angle so it's a double bump/sway and I hear it for each wheel bump but I can't get it do it when I rock the truck from standing on the running board. It is a sound similar to if a ratchet strap tail was smacking the body.
 
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