Found the source of my rattling

[spiritman]

I’ve been dealing with a rattling noise coming from under my Yukon for months. It only makes noise when I drive from 10-20mph. I suspected it was coming from the rear of my truck. I took both wheels off. Everything looked in order. Nothing was loose, brakes and rotors were good. I stopped by Advanced Auto Parts. They said it sounded like something was hitting the drive shaft and to check around there. Lo and behold, this is what I found making the noise.

My u joints didn’t have any play so what should I do with this “ring?”


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[PG01]

I would cut it off

If it was a weight for the driveshaft to balance it, it aint doing shit now.

if you feel vibrations go get the driveshaft balanced

 

[OR VietVet]

Exactly. That doesn't balance anything if it doesn't spin with the shaft. If you remove the shaft you may be able to just slip it right off. Pics when you do that please.

 

[PG01]

Actually, now that i looked at it again... thats on the rear, not the driveshaft...almost looks like a collar around the pinion shaft seal...????

you drive over a curb or something, in reverse???

 

[spiritman]

I got the truck last September so it’s been like these since I got it. I thought it was a loose e brake or something.

Yes, it’s on the rear. I don’t know what purpose it serves but it makes my truck sound raggedy as hell!


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[OR VietVet]

It is a protective sleeve for the edges of the front of the pinion gear housing for the protection of the pinion seal. Let me caution you. It will take a grinder disc to cut off without pulling the shaft and removing the yoke. The yoke removal is no big deal but if reinstalled wrong with too little tension or too much tension, you will damage the pinion bearing. If you take it off it would be best just to cut off with the grinder. You could also tap at 4 equal spots around that ring and bend the sleeve down tight so it does not move and rattle. Use a smaller ball peen hammer.

 

[avalonandl]

Muffler bearings..... LOL

 

[PG01]

Muffler bearings..... LOL

Hate it when those go out.... special order from dealer....

 

[OR VietVet]

Naw! Just send the wife or girlfriend out to the dealers till she can come back with them. Just tell her all she has to ask at the parts counter is if they have muffler bearings and she wants some if they do. That should keep her busy for at least half the day. BUT! Be prepared for an ass kickin' when she gets back home. She will be STEAMIN' MAD!

 

[PG01]

Naw! Just send the wife or girlfriend out to the dealers till she can come back with them. Just tell her all she has to ask at the parts counter is if they have muffler bearings and she wants some if they do. That should keep her busy for at least half the day. BUT! Be prepared for an ass kickin' when she gets back home. She will be STEAMIN' MAD!

And stop by walmart for blinker fluid....

 

[OR VietVet]

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!

 

[spiritman]

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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[OR VietVet]

That ring has nothing to do with balance and will not cause a vibration.

 

[PG01]

That ring has nothing to do with balance and will not cause a vibration.

X2

 

[PG01]

Looks same 2wd,4wd,awd because its the rear end...or rear differential to be technical... and here you go... from my 4wd tahoe

 

[PG01]

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]

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?

 

[spiritman]

That ring has nothing to do with balance and will not cause a vibration.

Good, I’m down with replacing some suspension stuff on this rig with 143,5xx mikes...


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[spiritman]

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]

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.