Shake or Vibration Issues

[frenchsquared]

Did you put the clamps in front of or behind the axel, and how far? I have my clamps 5" in front of the block and they didn't improve anything for me. Thanks!

 

 

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About 8" behind. I went back far enough to put pressure on the over load thus using part of its spring weight.

I figured up close to the u-bolts would do pretty much nothing.

 

I have seen a lot of factory leaf packs with these clamps. They are typically near the leaf hanger, no where near the u-bolts. Since we only have two leafs I thought it would be best to turn the over load into a leaf spring. No idea how it will effect towing yet.

 

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My truck shook before and after the leveling kit. It had no impact.

The 2 local dealers never said a word about the leveling kit.

Edited January 30, 2016 by frenchsquared

[southern_sierra]

I put the clamps 3 1/4 inches in front of the blocks as a starting point and it helped so much I'am afraid to move them. Wondering what it would do with clamps in front and behind the blocks would do.

Edited January 30, 2016 by southern_sierra

[southern_sierra]

I tried the clamps behind the blocks 8 inches made my ride worst than before any clamps. I put them back in front of the blocks 4 inches and the ride is much better for me.

[Swankster988]

I just tried the clamps with my truck. I put them 4" in front of the block. Its feels a little bit better but not much. The vibration starts for me around 61MPH. I had the vibration before the lift kit and after the lift kit. The new wheels/tires didn't help any, everything is exactly the same. Sucks!

[FormerFordGuy]

I finally fixed my vibrations today. I traded my 2014 Vibrator for a 2106 F150. I really do feel for all you guys dealing with this. I just couldn't take it anymore. My dealer wouldn't even try.

 

I guess I need to change my screen name now.

[steelcity]

I finally fixed my vibrations today. I traded my 2014 Vibrator for a 2106 F150. I really do feel for all you guys dealing with this. I just couldn't take it anymore. My dealer wouldn't even try.

 

I guess I need to change my screen name now.

You're a former ferd guy who is now a Chevy guy but now is a ferd guy again? And you traded for a truck that won't be available for another 100 years? 2106?

[FormerFordGuy]

You're a former ferd guy who is now a Chevy guy but now is a ferd guy again? And you traded for a truck that won't be available for another 100 years? 2106?

Thank god you caught my typo.

[steelcity]

Thank me, God and Louis Chevrolet! Or in your world, good Lord Mister Ford!

Edited January 31, 2016 by steelcity

[rshad]

You're a former ferd guy who is now a Chevy guy but now is a ferd guy again? And you traded for a truck that won't be available for another 100 years? 2106?

 

90 years. Lol

[jagabom (Esquire)]

We should have a contest and whoever gets the one 1,000,000th view wins a brand new Chevy Viberado.

Jim
2015

[51G'sPaperweight]

I wanted to believe the vibration was gone. I've driven truck a couple weeks and overall the vibration is better but its still there. An new rear end was installed to replace the defective rear end that was installed and new tires installed to replace defective tires that were installed. The vibration that's bothering me is in the steering wheel and has been there almost from day 1. The above fixes basically has put truck back to square 1.

I think that GM is looking in the wrong place for a solution. This thread is full of tires, drive shafts and rear end replacement and some times there are positive results but I think the problem is motor transmission related. In my case driving 80kph is just awful until I put it in M5. Why IMHO... the engine is laboring because of the high gear and then add AFM it becomes a vibrating mess. At freeway speeds 115kph+ all is well until the AFM kicks in. AFM starts the vibrations but, it doesn't go away when AFM shuts off, I have to change speeds for it to go away. This has probably got something to do with harmonics, resonance or something like that.

Another observation is the vibration is worse in wet weather. Maybe the motor is just running like a POS due to ignition stuff and shaking the truck. I've mentioned to the dealer that I don't think motor is running right but they plug it in and the diagnostics say otherwise. Basically the dealer has my truck in the working as designed category. I'm at a loss if I should just live with this and drive my automatic like a standard and pay big dollars to disable AFM.

Frustrating that a $63k truck works this way comments appreciated.

[Txjose]

When i get home i am going to take mine to the dealer.

 

I bought my 2014 silverado double cab about 9months ago used off a dealer lot. Thought i got a good deal on it and am content with the truck.

 

It didn't even make it home when i got it when i went to a tire shop... Got a level installed and 33s.

 

Well slowly but surely ive been noticing the vibration..... It geta pretty noticeable at about 75ish.

 

Here is the thing.... I bought it used.... It has just over 50K miles on it..... I got it from a dealership. With my level and tires is there anything that can be done?

 

I don't have my stock tires anymore

 

 

 

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[C20Carbon]

I originally posted back around the 17th of Dec. Thought I should update. The dealership I bought my truck from has now had it over 3 weeks. They've run the pico tests and "determined" it's the tires. They had a GMC expert (yeah right) come in and review all the data and he ordered another set of tires in that "would fix the problem, guaranteed". I'm not holding my breath. I've called twice to get the brand of tire only to be BS'ed. It's supposed to be ready Monday. I don't know what route I'll take if this isn' fied this time. BTW, 5th time in, 3rd time for over a week.

[Snoringbear]

I've had my 2015 LTZ 6.2 CC 4x4 since May 2015, have about 13k miles on it. I've been driving Chevy's and GMC's since 1975. I have to say this is the smoothest and tightest truck I've ever owned. But, when driving on roads with traction grooves scribed in the surface I do get some road feel vibration in the cab. I also feel the tar stripes between concrete sections, surface cracks and such which in the past I have always considered normal. However, when on good road surface, especially asphalt, this truck is "smooth as a gravy sandwich" to quote Crocodile Dundee. But, the comments on this forum Has me wondering and confused frankly, what the level of expectation is? In other words, do others consider what I'm experiencing as normal and acceptable as a problem? Would be interested in feedback from other posters.

[raisincane]

In April of 2015 I traded my 2013 Silverado Z71 crew cab in on a GMC Sierra All Terrain Crew Cab with a standard bed. On my way home from the dealership there was a VERY noticeable vibration from 45-55 miles per hour, and also a vibration at higher speeds(65+). I asked the dealership about the issue and they said the truck may just have flat spots on the tires from sitting on the lot. Told me to drive it a while and see if the problem corrects itself. I didn't argue, however, I could tell and knew that it was in the drivetrain and not in the tires. Upon bringing my truck back for it's first service I brought the vibration issue back up to the dealership and the still blamed the tires. Again, I didn't argue, allowing them to balance, or in my case unbalance all my tires. Apparently, their machine was out of calibration. I was on my way out of town upon completion of service and did not notice they were that far out of balance until I was quite a ways from the dealership. My trip from the dealership was only about two hours to my destination so I continued on and would just take it to a dealership in the area where I was headed. So, after driving for two hours on unbalanced tires and feeling what that feels like there was no question in my mind that my original vibration concern was definitely NOT in the tires. The other dealership re-balanced my tires and didn't address my original vibration concerns. I didn't say anything figuring I'd just get the run around from them too. Anyway, the vibration in the drivetrain was still evident. I talked to my father who has a 2014 Sierra Crew Cab 2WD short box. He said he has the same issue and definitely agreed with me that it is in the drivetrain. About a month and a half ago my dad, a very close family friend, and myself had to run and errand in my truck. The vibration at 50mph was very noticeable that day so, I asked the family friend(retired mechanic and GM mechanic for many, many years). He immediately said it was definitely in the drivetrain and said it felt like a torque issue. Meaning that the drivetrain was creating maximum torque for the gear it was in(overdrive and V4) creating the vibration. He recommended to me shimming the transmission to change the angle of the drive shaft. He said he has had the same vibration issues while building many cars throughout his years and said the shimming was the first place to start. So, I started digging into the issue further and landed here. I read many of the comments here to try and confirm or find a solution. Doesn't seem to be one though. I have yet to try shimming, but am seriously considering trying it after my latest visit to the dealership. While at the dealership for another issue on Thursday I asked the service manager if GM has found a fix for the drivetrain issue and he stated there was nothing that could be done to fix the issue.(FINALLY, A DEALERSHIP ADMITTING THAT THE VIBRATION IS IN THE DRIVETRAIN). He said to me that the issue was with the truck going into V4 creating the vibration. I'm still not satisfied with that answer because I stated to him my 2013 Z71 Crew Cab would go into V4 mode and I didn't experience any vibration issue with that truck. He really didn't have a good answer for that going onto blame the gov't standards set for the issue.

Well, I'm hesitant to modifying my truck by shimming it due to possibly voiding my warranty. However, I may just do it anyway and remove the shims prior to taking it in with any future major warranty issues. I love the truck other than the annoying vibration and don't see myself getting rid of it because of that, but as a long time GM truck owner I am disappointed GM would release vehicles with this type of issue being they've been the smoothest riding vehicles on the road for many years.

I will let everyone know if the shimming does the trick when I'm able to get to it.