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Shake or Vibration Issues

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Rossy11 Enthusiast

Rossy11

Posted
Posted (edited)

THis was my first thought

I second the above

I only have 1300 kilometres or roughly 900 miles lol. That's what I was thinking also about the rotors but this is brand new, and it doesn't feel like the normal shuttering when you have warped rotors, just feels like a small annoying vibration in the floor/frame kinda deal. Edited by 09rcsb
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DALaws
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Silverado 6.2 Enthusiast

Silverado 6.2

Posted
Posted

I only have 1300 kilometres or roughly 900 miles lol. That's what I was thinking also about the rotors but this is brand new, and it doesn't feel like the normal shuttering when you have warped rotors, just feels like a small annoying vibration in the floor/frame kinda deal.

Pinion angle is bad while under breaking or ring gear tolerance maybe.

  • Like 2
Rossy11 Enthusiast

Rossy11

Posted
Posted (edited)

Pinion angle is bad while under breaking or ring gear tolerance maybe.

Yeah was thinking along these lines as well. The garage doesn't notice it.... it's so minimal I could live with it. But from my last truck to this I definitely notice it and it bothers me. Oh, what to do....I guess I'll go back to the shop and get them to check the angles and take it for another drive I guess, or wait until it gets worse...if it even does. I'll throw some weight in the back and see if it goes away, then I'll definitely know Edited by 09rcsb
Newly49 Enthusiast

Newly49

Posted
Posted (edited)

Thought this was weird and worth sharing. My truck is actually doing OK now that I got 2 new tires that replaced 2 w/ RFB issues. But yesterday I was towing an empty single jetski trailer that must have had a serious out of balance or warped/old tire. Anything above 60 mph brought on a heavy shake in my truck.

 

What was weird about it was that the shake was in the steering column/shifter. Bad. Nothing really noticeable in the seat or center console.

 

Not sure I understand how towing a trailer (w/factory hitch receiver) would bring on a shake more towards the front of the truck.

Edited by Newly49
2strokesmoke Enthusiast

2strokesmoke

Posted
Posted

Yeah was thinking along these lines as well. The garage doesn't notice it.... it's so minimal I could live with it. But from my last truck to this I definitely notice it and it bothers me. Oh, what to do....I guess I'll go back to the shop and get them to check the angles and take it for another drive I guess, or wait until it gets worse...if it even does. I'll throw some weight in the back and see if it goes away, then I'll definitely know

Find a gopro camera fasten it to the under body securely in place facing your trucks rearend. You will be surprised in what you will discover!

 

I bet there is some axle wraping happening. Brake issues are very possible, but I'm betting on something else as the culprit.

 

Keep us posted!

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted (edited)

So in this video by Yukon, they show at the end how to check the preload. Would be interesting for a few of us to test this out and see what the preload is truly set at. There was a recall for some of our trucks indicating that the pinion nut was loose. Wondering if this spans a lot more trucks than the original recall. Would be killer if this is truly what the issue was and would explain why replacing ring and pinions and axles etc fixed it because when putting everything back together the preload was set when it originally wasn't from the factory. Sad if gm missed something this simple which I doubt. Hoping it's the fix for some!

https://m.youtube.com/watch?v=5cSWh1id9mY

Edited by hotrodz37
AllTerrainX Enthusiast

AllTerrainX

Posted
Posted

So in this video by Yukon, they show at the end how to check the preload. Would be interesting for a few of us to test this out and see what the preload is truly set at. There was a recall for some of our trucks indicating that the pinion nut was loose. Wondering if this spans a lot more trucks than the original recall. Would be killer if this is truly what the issue was and would explain why replacing ring and pionions and axels etc fixed it because when putting everything back together the preload was set when it originally wasn't from the factory. Sad if gm missed something this simple which I doubt. Hoping it's the fix for some!

 

https://m.youtube.com/watch?v=5cSWh1id9mY

Thanks for the video!!! So preload is checked when there is nothing in the differential but the pinion gear and yoke?

  • Like 1
hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted

Thanks for the video!!! So preload is checked when there is nothing in the differential but the pinion gear and yoke?

 

I read another article that says the best way to check it is with the driveshaft not attached, the wheels and tires off and the brake rotors off. Guessing the extra rotating mass throws it off.

abominable z71 Enthusiast

abominable z71

Posted
Posted

Preload torque on the pinion nut is extremely light usually around 10-12 in-lbs. That's IN-LBS not ft-lbs. That being said too light of preload creates backlash problems and can usually be heard when decelerating.

Luke Fontenot Enthusiast

Luke Fontenot

Posted
Posted

Mine was fixed by correcting the rear axle backlash. Upon checking the original rear end they found the back lash to be all over the place. GM engineer approved a new rear axle. Prior to installing it the technician opened it up and found it was also all over the place on backlash measurements. He then replaced the ring and pinion in the new axle. Once installed the vibs were gone. It has been almost 2 years now and still no issues.

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