Found the source of my rattling

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OR VietVet

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But remember this. If you do that and she comes back all pissed, instead of seeing the good natured fun, she will NEVER EVER EVER go get something for you involving the vehicle. Talk to the hand man!
 
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spiritman

spiritman

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Now I think about it, my truck does vibrate a lot. I’ve had my rims rotated/balanced and I still fill it.

Can someone with an AWD Denali take a pic of the rear of the shaft? Maybe that’ll give me a clue on what this thing is.


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Now I think about it, my truck does vibrate a lot. I’ve had my rims rotated/balanced and I still fill it.

Can someone with an AWD Denali take a pic of the rear of the shaft? Maybe that’ll give me a clue on what this thing is.


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Which leads me to someone wheeling that thing hard and knocking the diff on a rock or curb or something and now the pinion shaft is out of whack.... there's your vibrations
 

OR VietVet

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Where do you feel the vibes at? In the steering wheel? In the floor board at your feet? In the seat of your pants? That will help as to where the source may be. Also, is it speed sensitive? Do you feel any vibes when braking?
 
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spiritman

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Where do you feel the vibes at? In the steering wheel? In the floor board at your feet? In the seat of your pants? That will help as to where the source may be. Also, is it speed sensitive? Do you feel any vibes when braking?
Mostly steering wheel, I don’t have any shaking while braking.

It shimmy’s a little around 45-65 mph. It shaky a little bit more at 70-80 mph. It’s not terrible, it’s it’s annoying.

Thanks everyone!


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OR VietVet

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If you feel the vibes in the steering wheel it is likely from tire wear caused by loose front end components and being out of alignment because of that or tire balance itself. I can assure you one thing though. Alignment will never cause a vibration unless the caster is WAY off. Doing an alignment will not fix a vibe unless it is the caster being way off. Tire wear that is already there will still cause vibes even if you align the vehicle. Get the front end, steering and suspension, inspected by a qualified tech and address as needed.

A bad tire can also cause vibes even if it shows no abnormal wear. It could have a slipped belt causing the vibes. If all tires look great and you swap front to rear and the vibe follows to the rear, feel in the seat of your pants, then you have narrowed it down. Or just go buy a brand new Tahoe or Yukon. That'll fix it for sure.
 

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