Shake or Vibration Issues

pickmeup · March 21, 2016

Any I have seen steel is painted black and aluminum is unpainted . Yes you can check with magnet also.

KLRV6 · March 21, 2016

Are you hinting that you found the fix? lol

LOL.. Maybe quite possibly yes. I know of one thing that absolutely reduces the resonance in the cabin of these trucks. To the point that below highway speeds, it's just the rubbery tire noise, a little wind and the occasional interior rattle that previously was covered up by the resonance.

My truck is at the dealer right now (with none of these "fixes" in place) I am waiting to see how it goes with them first. It's the expensive parts I am not willing to cover the cost of. They are currently looking at the ring gear as the source of the vibrations. It was sold to me with 1.25qts of dif fluid, so sad things have been going on in there for 9500 miles. I am unable to do too much more until they have the $$$ parts out of the way.

Leadslinger · March 21, 2016

Does anyone mind sharing what normal pico readings should be? Or can anyone share what their readings that resulted in a buy back? Thanks

Edited March 21, 2016 by Leadslinger

paxtonman · March 21, 2016

I've got a novel idea, Howz about all you jagoffs that traded your GM product for a Jap or Mopar truck go troll somewhere else. There must be multiple web sites where you can beat your chest and spout your rhetoric about how bad the GM trucks are and how good the Jap and or Mopar and of Ford trucks are. Quit trolling! I had two 2015's and now a 2016 and they all were, and still are, fantastic!

I've had 2 15's both vibrated, driven 2 more, one of them vibrated, I think the 1-3 % is a fantasy. And I don't work for a car company.

GMCSierra4x4 · March 21, 2016

Shimming motor mounts, replacing my transmission and replacing a tire with a high Road Force number seems to have resolved most of my vibration issues. I still need to get it on the highway for some extended testing though.

Edited March 21, 2016 by GMCSierra4x4

C6Bill · March 22, 2016

I'm new to this forum...on many others though.

Got this in response to a question I asked my dealer and it came from the Product Mgr for the Silverado/Sierra @ GM:

Since we launched this current generation of PU in 14MY we have had a mix of AL or cast iron front control arms. It is based on the total mass of the truck and has varied as to which models have received AL based on the need to control mass to keep trucks in specific test weight groups. The 16MY started this same way, but is changing very soon (in the next month or so) to 100% stamped steel control arms. The mass will be between the AL and cast iron versions. Please note a key driver for this change is an improvement in reducing the truck’s sensitivity to vibration inputs from wheels/tires.

FYI.... have a 2016 Sierra All Terrain 6.2L - with steel control arms, have had no vibrations pre/post level. Truck was lowered in the rear to level with shackles and removing the blocks.

And if that is in fact the root cause wouldn't the steel control arms be a direct replacement for the aluminum version? If so that would be GREAT news, I really hope it does resolve this issue for all of you. Except the guy in TENN, i hope his keeps vibrating

That's a joke

hotrodz37 · March 22, 2016

I have non aluminum control arms and my steering wheel is as smooth as can be, but the seat and console vibes are definitely there. Hopefully this could be a fix for those of you experiencing the steering wheel vibes.

Sent from my iPhone using Tapatalk

Edited March 22, 2016 by hotrodz37

Jesse Davidson · March 22, 2016

I have steel control arms and my steering wheel is as smooth as can be, but the seat and console vibes are definitely there. Hopefully this could be a fix for those of you experiencing the steering wheel vibes.

Sent from my iPhone using Tapatalk

thats very unfortunate... I have both, so it sounds like it isn't the fix to fix all.

Mcarlo24 · March 22, 2016

And if that is in fact the root cause wouldn't the steel control arms be a direct replacement for the aluminum version? If so that would be GREAT news, I really hope it does resolve this issue for all of you. Except the guy in TENN, i hope his keeps vibrating

That's a joke

Now That was funny... Almost spat out some coffee...

Aussieshed · March 22, 2016

Well the response I got from the dealer yesterday when I had my truck in was the standard. Tech felt the vibration when I took him on a test drive, but they couldn't find anything. No data to go on. Rang the GM mechanic line and they were told there's no known problem, which is just a joke since so many on here have issue numbers (or whatever they're called) with GM. Anyway I told him, GM does know about it and is ignoring it and that you just have to search the web to find hundreds of references to the issue. Also told him about the AutoGuide article coming out. So driving it home last night, it actually felt worse, so I'll be contacting them again.

zero_tolerance · March 22, 2016

Hey guys.

I have a 2015 Regular cab 2wd V8 with 12k miles, i too, had the dreaded vibrations, they were so bad that i couldn't put anything on my center console (bottles would rattle all around, and my cellphone or anything else would even jump out of the console).

My dealer aligned the truck, balanced it, with no success.

Anyways, i recently installed a set of Fox 2.0 shocks to level the truck, and guess what? vibration is gone, completely GONE. i think at this point it might have had something to do with the pinion angle or driveshaft.

Not saying everyone to go out and change shocks, but it's what fixed it for me.

Jesse Davidson · March 22, 2016

Just a random thought, has anyone done a truck up like the Rocky Ridge custom ones? upgraded rear shocks and struts, upgraded coil over shock fronts, the Rocky Ridge Cross Members etc?

http://www.rockyridgetrucks.com/#!gmc-alpine/zx5cq something like this for example

EDIT: before I get yelled at to go read back, I am specifically referring to the previously mentioned upgrades, I know numerous people have done lift/ leveling kits, oversized tires etc. but I can't recall if anyone has done the other upgrades and had any resolution... other than the one guy earlier today who upgraded to FOX shocks and says it is fixed.

Edited March 22, 2016 by Jesse D

GMCSierra4x4 · March 22, 2016

I am beginning to wonder if this is a transmission and engine driveline issue. My transmission was replaced under PI1450 (snap, pop, clunk on launch) and the motor mounts were shimmed for the vibration at idle. My vibration appears to be gone at lower speeds. I have a business trip later this week and I will get to test it at highway speeds between 60-75 mph. I am keeping my fingers crossed.

Edited March 22, 2016 by GMCSierra4x4

Jesse Davidson · March 23, 2016

I am beginning to wonder if this is a transmission and engine driveline issue. My transmission was replaced under PI1450 (snap, pop, clunk on launch) and the motor mounts were shimmed for the vibration at idle. My vibration appears to be gone at lower speeds. I have a business trip later this week and I will get to test it at highway speeds between 60-75 mph. I am keeping my fingers crossed.

don't forget to go up to 80mph... the worst for many people is 76mph

GMCSierra4x4 · March 23, 2016

76 mph would be 13.8 Hz 1st order tire, 41.4 Hz 3rd order tire, 47.2 1st order prop shaft, and 31.5 Hz 1st order 6th gear carrier bearing. I will check for the vibration and if present take some picoscope readings. Thanks.

Edited March 23, 2016 by GMCSierra4x4