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Shake or Vibration Issues

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southern_sierra Enthusiast

southern_sierra

Posted
Posted (edited)

The frame and mounts don't cause the vibrations but with stiffer mounts and less frame flex vibrations are felt more easily from what ever the cause is. They are always trying to improve things with new materials and thats a good thing but I believe rubber mounts are the best for absorbing vibrations. Just my thoughts since there is no common fix. Everything is being thrown at these trucks some things work and some don't. I got lucky after tightening the axle u-bolts and loosening my cab mounts and re tightening them my vib has not been back, but could come back at anytime who knows. I also have installed clamps on the leaf springs.

 

This is a good read about all the changes made to the 14 and up.

http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2013/May/Silverado-May-5/0505-silverado-chassis.html(Posted by Gofas)

Edited by southern_sierra
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Vibe15 Enthusiast

Vibe15

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Posted

Update

1/22 service manager called. Did pico test. Believes it's the tires. Sending out to RFB. Will send results to GM. Probably replacing 1-4 tires depending on what they say. Will call me Monday. So far owned it 19 days, minus driving to both dealers I put 250 miles on it and a total of 5 1/2 days in the shop. If by chance RFB fixes it I'm doing everything in my power to get there best extended warranty for free. Believe that would be fair. Update on Monday

steelcity Enthusiast

steelcity

Posted
Posted

The frame and mounts don't cause the vibrations but with stiffer mounts and less frame flex vibrations are felt more easily from what ever the cause is. They are always trying to improve things with new materials and thats a good thing but I believe rubber mounts are the best for absorbing vibrations. Just my thoughts since there is no common fix. Everything is being thrown at these trucks some things work and some don't. I got lucky after tightening the axle u-bolts and loosening my cab mounts and re tightening them my vib has not been back, but could come back at anytime who knows. I also have installed clamps on the leaf springs.

 

This is a good read about all the changes made to the 14 and up.

http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2013/May/Silverado-May-5/0505-silverado-chassis.html(Posted by Gofas)

How tight should those axle u-bolts be? Is there a ft/lb setting?

southern_sierra Enthusiast

southern_sierra

Posted
Posted

I think the torque is 78ft/lbs. I tightened mine down in a cross pattern until each one started to give alittle, thats as tight as you can get them before you wring one off.

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

I thought 78 ft/lbs was for the leaf spring U-bolts. I thought I read that on another thread and that is what I tightened mine down to.

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted

I thought 78 ft/lbs was for the leaf spring U-bolts. I thought I read that on another thread and that is what I tightened mine down to.

 

78 ft/lbs is for the leaf spring u-bolts. Body mounts are 122 ft/lbs.

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

 

78 ft/lbs is for the leaf spring u-bolts. Body mounts are 122 ft/lbs.

So what is the torque on the axle U-bolts?

steelcity Enthusiast

steelcity

Posted
Posted

So what is the torque on the axle U-bolts?

I think we are talking about the same thing

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted

So what is the torque on the axle U-bolt

 

78 ft/lbs. Both names for the same thing I suppose - we are talking about the same u-bolts using diff names.

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted (edited)

Well this just popped up on my Facebook feed: http://www.weitzlux.com/firm-news/firm-news-2016/safety-concerns-on-gm-vehicle-vibrations/

 

 

Sent from my iPhone using Tapatalk

odd that they dont list the pick-ups in this. I think they may really be referring to the pressurization issue in the SUV's more than the vibration we have

Edited by Jesse D
pm26 Senior Enthusiast

pm26

Posted
Posted

GM went through considerable effort to update and make these trucks strong and smooth for 2014 and beyond. Here's link to Chevrolet site http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2013/May/Silverado-May-5/0505-silverado-chassis.html.

I was reading the first section about frame/axles/shocks and improved leafs.

I squashed my suspension right away. And feel the road pretty good now. still loves the way it drives:)

And part of that"considerable effort" included buying and installing substandard quality tires and various assemblies. :rolleyes:

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unknown78 Enthusiast

unknown78

Posted
Posted (edited)

I am going to call the dealer this week to take mine in for the seat movement service bulletin, the exhaust valve squeak, vibration at 55+ at WOT, and a passenger door rattle. Will they give you something to drive while yours is being repaired? Or is it dealer by dealer? Haven't taken a vehicle to a stealer in a few years. I am going to try a new on this time...the only 2 times I have taken a vehicle in the last 10 years the have screwed something up. So hesitant to drop my truck off. lol

Edited by v2500guy
Wrench589 Enthusiast

Wrench589

Posted
Posted

I just had a thought that I figured I would share. I don't know a lot about the electronic steering in these vehicles but I recall some discussion about it and "smooth road shake". From what I recall, the electronic steering does have some kind of logic to try to dampen or cancel any smooth road shake.

 

What I don't recall anybody reporting from their dealer is any measurements from the Hunter Road force balancer on the lateral measurement it can take. I'm wondering if for some reason there is excessive or significant lateral forces that are causing the electronic steering to get too "involved".

 

Anyone have any comments from their dealer about the lateral measurements on the Hunter?

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