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

[George B]

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.

 

[Chert_Detective]

I am so close to 12s I can taste it. I need to go to the track and log and tune. Losing a lot on both shifts, and you can really feel it too, they used to be nice and crisp.

1.87 60'
4.83 0-60 (It's been 4.81)
8.54 1/8
13.30@103 (It's been 105)

 

[randeez]

I am so close to 12s I can taste it. I need to go to the track and log and tune. Losing a lot on both shifts, and you can really feel it too, they used to be nice and crisp.

1.87 60'
4.83 0-60 (It's been 4.81)
8.54 1/8
13.30@103 (It's been 105)

View attachment 258853 View attachment 258854 View attachment 258855

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

 

[George B]

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]

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]

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

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.

 

[massivespl]

went n got 15 sheets of wood to start the subwoofer enclosure this weekend

 

[randeez]

View attachment 258873 View attachment 258874
went n got 15 sheets of wood to start the subwoofer enclosure this weekend

you getting ready for hurricane season?

 

[Rocket Man]

View attachment 258873 View attachment 258874
went n got 15 sheets of wood to start the subwoofer enclosure this weekend

Quit layin around and get to work! Them ain’t unloading themselves.

 

[George B]

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.