Shake or Vibration Issues

[Pinnacle]

Test drove an f150 today. Felt weird stepping onto a ford lot lol. Looks wise I think the gmc's/Chevys win. Interiors in the gm vehicles are nice but I was pretty impressed with the lariat and would say that takes the cake. Push button start is nice. The seats to me are far more comfortable in the ford. I drove a crew cab with the 5.0 and 3.55 rear end and the throttle tip in is 10x better than the Chevy and that thing flat out goes. The tailgate locks when you lock the truck which is also nice and the field of view is much less obstructed in the Ford. I never thought I would say this after being a die hard gm fan all of my life (28 years old now - all of my family drove gm vehicles and I have had 3) but the ford to me is a better vehicle. If I can get past the looks and the alum body there might be one in my driveway soon. I would love it if gm could figure this out but after this being my second vibrator for my sanity I might need to just get out of it and move on with my life.

 

 

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Whats wrong with the Aluminum body? thats one of the best things about it, GM will eventually go that way as well. And that truck does look good.

[hotrodz37]

Whats wrong with the Aluminum body? thats one of the best things about it, GM will eventually go that way as well. And that truck does look good.

Increased insurance and repair costs. If you get a door ding you can't massage it out like a "fix a dent" type person would etc. I do agree with you though that all major manufacturers will eventually move to alum bodies, I just don't know if I want to be an early adopter or not.

 

 

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[Pinnacle]

Increased insurance and repair costs. If you get a door ding you can't massage it out like a "fix a dent" type person would etc. I do agree with you though that all major manufacturers will eventually move to alum bodies, I just don't know if I want to be an early adopter or not.

 

 

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Its not that much more, I have seen dents fixed on them fast and at the same cost as steel.

[southern_sierra]

my tailgate locks... the 2016's do that now.

 

me too. and my friend's 15 Denali CC 6.2 as well. also my other friend's 15 LTZ CC 6.2 short bed with max trailer.. they all do it.. i'm convinced every last one.. and if your's doesn't? come on by, i'll take you on the hwy and point it out to you.. (only kidding if you don't notice it enjoy, you're the lucky one lol)

 

Glad to hear that please keep reporting back after each week or whenever you come back from an extended hwy drive..

 

I started a thread called "how to handle this" regarding my "shimmy" vibration whatever at 75mph or so...

 

I will say retightening the U bolts, the truck is nowhere near as bouncy as it was with the ranchos.. they were loose.. cab mount bolts were already tight as anything so doubt that helped... maybe next trick will be attaching another clamp 5" inches in front of the U bolts on the spring, read somewhere in here guys did it and it quelled much of the vibration/shimmy.

I installed the u-bolt clamps today on the leaf springs. I have them at 5 1/2 inches in front of the axle itself not the blocks. Since my vibs are gone just wanted to see if I could tell any difference with them installed since I already had them. The first thing I notice was the ride, it rides much better now. The town I live in the street are patched everywhere. Going over expansion joints in town 15 to 20 mph before would jar the hell out of the dash now its about half what it was. Took it out on the hwy on a 4 lane where its rough and in that area I always ride in the left lane because its so rough, so got in the right lane and it rode so good that it was no problem. It really surprised the hell out of me I don't know if it changes the spring rate or what. All I know is all the jarring I had before is gone. I was planning on changing out my front shocks with the Bilstein 6112 but not now. Best 16 dollars I ever spent.

Edited January 19, 2016 by southern_sierra

[2015GMCSIERRA]

I made the service manager angry and he threw a copy of the internal GM TSB for this issue at me. I will attach it when I return home from Omaha. The gist of the document says that "some" of your customers may feel a slight vibration from temporary flat spits on Goodyear times because the compound was made to decrease wear of tire at higher speeds. The document states that it will go away as tires warm up. Brand new truck and dealership says it is GMs problem. I will post actual document on Thursday.

[tnchevy]

Post if you like but it has been mentioned before, actually dozens of times already.

[hotrodz37]

Ever since I tightened my rear axle u-bolts which where not very tight to begin with and loosened all the cab mount bolts and re-tighten them, my Vibration is gone that I had between 75 and 85. I have put about 700 miles on the truck since. When I tightened the u-bolts I did so until they felt like they were starting to twist or feel resistance, that way you know their tight. Just thought I would share this maybe it would help yours.

 

Southern Sierra,

When you tightened your body mounts down, did you do them in any particular pattern? I redid mine yesterday and the ubolts as well and didnt seem to help at all.

 

I have a set of spring clamps I bought a while ago I might try installing.

 

My vibration seems to be a rotating part that always has the same frequency, sometimes gets more or less pronounced with no rhyme or reason.

[Snoringbear]

"Increased insurance and repair costs. If you get a door ding you can't massage it out like a "fix a dent" type person would etc. I do agree with you though that all major manufacturers will eventually move to alum bodies, I just don't know if I want to be an early adopter or not."

 

I'm waiting for a good ole big ole Texas hail storm this spring. Then, being you can't swing a dead chicken around here without hitting a dozen pickups, we will have an opportunity for a valid side by side comparison.

[tonygxp]

 

Southern Sierra,

When you tightened your body mounts down, did you do them in any particular pattern? I redid mine yesterday and the ubolts as well and didnt seem to help at all.

 

I have a set of spring clamps I bought a while ago I might try installing.

 

My vibration seems to be a rotating part that always has the same frequency, sometimes gets more or less pronounced with no rhyme or reason.

yep..... like has been stated hundreds of times in this thread and elsewhere they all exhibit this just let someone who has it take it for a ride they'll point it out and after that your world will never be the same lol

 

I installed the u-bolt clamps today on the leaf springs. I have them at 5 1/2 inches in front of the axle itself not the blocks. Since my vibs are gone just wanted to see if I could tell any difference with them installed since I already had them. The first thing I notice was the ride, it rides much better now. The town I live in the street are patched everywhere. Going over expansion joints in town 15 to 20 mph before would jar the hell out of the dash now its about half what it was. Took it out on the hwy on a 4 lane where its rough and in that area I always ride in the left lane because its so rough, so got in the right lane and it rode so good that it was no problem. It really surprised the hell out of me I don't know if it changes the spring rate or what. All I know is all the jarring I had before is gone. I was planning on changing out my front shocks with the Bilstein 6112 but not now. Best 16 dollars I ever spent.

Thanks for the update. I emailed my dealer about all the issues i found when attempting to rectify it myself with the help of a friend who has the same truck at his 7,000sqft performance shop which is equipped better than most dealers around here including an awd mustang dyno and machine shop including a $250,000 five axis CNC machine just to nae a couple of things dealers do not have (at least around here)...

 

If i don't receive a satisfactory response from them I will bring it back to the selling dealer (idk what they will do about the wheel the repairing dealer damaged?) and from there I will install those blocks, see if it doesn't quell the shimmy/oscillation/vibration (or whatever other acronym for RIDICULOUS RIDE QUALITY you like lol).. from there I will continue with a call to GMC customer service and from there??? 1-800-my-lemon which i hope doesn't come to that..

 

I have to hand it to some of you guys who bought these trucks.. god bless you..I would be on fire if i owned this thing... even if i leased it without the extra $3k lease cash i found on this one (increasing the payment another $100/mo)... it's the only thing keeping me from parking it back at my selling dealer and handing them the keys....it's hard to get mad about something I only deal with on the hwy, it's my wife's truck I have a jeep and corvette. but we take this truck on trips, we like to travel in a full size truck.. if i only knew ahead of time i would have leased a ram, rides like a Cadillac on the hwy (i've had them for work vehicles recently and the F150 rides great too but much more truck like, sans the shimmy!).

 

I plan (or planned) to take this truck on a road trip during spring break when my wife is not working to either florida or possibly the corvette museum, maybe football HOF but idk if i want to lose my mind on the ride there watching a water bottle in the cup holder! as i try to convince myself it's not there, it's back what about this speed??

 

i purchased this truck to replace her 13 equinox LTZ which outside of the outdated cheapy interior and noisy V6/transmission in the AWD one we had and the mechanical power steering which sounded like a 70's nova when sitting still and turning the wheel (which the tsb requring new lines and different valving did nothing to rectify, yet the 4cyl base LS fwd had electric steering lol) DID NOT shake on the hwy at any speed.. when do you upgrade to a 3yr newer vehicle with a 15k higher msrp and feel like you downgraded? if i drove this every day i cannot lie, i could never do it... never.. thank god for the other vehicles i have access too. and thankfully the wife stays local..

[southern_sierra]

 

Southern Sierra,

When you tightened your body mounts down, did you do them in any particular pattern? I redid mine yesterday and the ubolts as well and didnt seem to help at all.

 

I have a set of spring clamps I bought a while ago I might try installing.

 

My vibration seems to be a rotating part that always has the same frequency, sometimes gets more or less pronounced with no rhyme or reason.

No particular order. To be honest I think tightening the u-blots did it for me.

[hotrodz37]

No particular order. To be honest I think tightening the u-blots did it for me.

 

Got it , thanks! My u-bolts were extremely loose and I tightened them to 78 ft lbs, then to 95 and it doesn't seemed to have made much of a difference. You just tightened them down as tight as you could - correct?

[jmckeone]

I finally fixed the vibrations on my 2014 Silverado by replacing it with a 2016 F150 yesterday. Yea I lost a lot of money in the deal but this truck is better than my Silverado in every aspect. Its drives so nice and best of all does NOT vibrate. Now I can finally sleep at night and not have to worry about all the BS GM was feeding me. I lost my arbitration hearing with the BBB as they sided with GM stating it was "normal operation" to vibrate at speeds above the posted speed limit. This has been such a horrible experience and GM does not give 2 shits, I will never own another GM in my life. Time to put this all behind me and enjoy my new non-vibrating truck! Best of luck to all of you still fighting this.

 

BTW for those worried about insurance going up for the alum body, my insurance actually went down $.04 /month with the F150.

Edited January 19, 2016 by jmckeone

[pm26]

I finally fixed the vibrations on my 2014 Silverado by replacing it with a 2016 F150 yesterday. Yea I lost a lot of money in the deal but this truck is better than my Silverado in every aspect. Its drives so nice and best of all does NOT vibrate. Now I can finally sleep at night and not have to worry about all the BS GM was feeding me. I lost my arbitration hearing with the BBB as they sided with GM stating it was "normal operation" to vibrate at speeds above the posted speed limit. This has been such a horrible experience and GM does not give 2 shits, I will never own another GM in my life. Time to put this all behind me and enjoy my new non-vibrating truck! Best of luck to all of you still fighting this.

 

BTW for those worried about insurance going up for the alum body, my insurance actually went down $.04 /month with the F150.

Ecobust or 5.0?

[67ChevyRedneck]

WTF is up with some new vehicles?

 

I had to fly to Colorado for 3 days for work last week with my boss. Boss usually gets a Tahoe but all they had was a Sequoia. Not sure if it was a 2016 or left over 2015, but it only had 17 miles on it!

 

Get this. That son of a bitch had the EXACT same floor buzzing vibration my silverado has every time it shifts. This one is actually a little worse than my truck in that you could feel it almost the entire time on the interstate. W... T... F... Again, not a wobble, or shake vibration, but a buzzing vibration you only feel on the floorboard (not in the seat, etc) just like my truck.

 

I was actually shocked. I know my friend had a 2008 Tundra (he traded it in a couple years ago for an F-250) but I rode in that a lot and don't ever recall any vibrations.

 

I've also taken my truck on the interstate several times since my last post. I think I have almost 6K on it now... zero interstate vibrations still. Just the "floor board buzzing" during shifts and uphills. I guess I'm "lucky?"

Edited January 19, 2016 by 67ChevyRedneck

[jmckeone]

Ecobust or 5.0?

3.5l Ecoboost