Shake or Vibration Issues

[LongrangeLauber]

From what I'm told GM has specified higher tolerances at least for the tires. In my case the dealer is saying my trucks vibration is due to the tires. A road force balance showed my tires needed 30lbs force to fix but apparently the tighter spec for our truck is around 20lbs. The result is my truck still vibrates supposedly due to this. I'm at the well you say it vibrates due to tires so I want them replaced and they say won't replace because tires are within the tire manufacturers spec.

That doesn't make any sense. If the tires are not within the vehicle spec then how can they pass that off as okay? I would try a different dealer if you can honestly

[pm26]

If I recall correctly, they lowered the maximum acceptable road force variation on the tires from 30 lbs to 15 lbs.

[dave07]

Can we conclude that given the stiff frames and body mounts that GM has designed for these trucks for good handling, one must specify tighter tolerances and precision balancing on many rotating parts in order to keep vibrations to an acceptable level? And this includes high quality hubs, brake rotors, wheel, and tires.

I would say that is a accurate statement.

 

 

 

Sent from my iPhone using Tapatalk

[Rme2513]

I have had my truck for a year and have 20k miles on it and im starting to feel a slight vibration in the steering wheel is this what y'all are talking about or do you thing it is just the tires

[oneandzero]

That doesn't make any sense. If the tires are not within the vehicle spec then how can they pass that off as okay? I would try a different dealer if you can honestly

I am kinda dumbfounded by their statement also. I basically said if they didn't go after the tire manufacturer, give me your test data and required specs and I will. I believe my request has my dealer working with GM tech on this, at least that's what I'm being told. Sad thing is this is a set of winter tires (Firestone 17") I purchased from the dealer. If this gets resolved I will likely have to go through this all in the spring with the regular wheels and tires (Bridgstone 22"). But on a positive note, today I was assured the new rear end definitely fixed my truck because it worked on another truck they did at the same time. The other truck didn't need tires replaced but mine does so it will be fixed. I was born yesterday apparently.

[pm26]

I have had my truck for a year and have 20k miles on it and im starting to feel a slight vibration in the steering wheel is this what y'all are talking about or do you thing it is just the tires

It could be just the tires in your case. Perfectly normal for tires to require rebalancing after 20k miles.

[14silverado4.3]

I am saying this right now, we are forced to buy tires from the dealerships.

 

GM will not stand behind tires bought elsewhere... I bought BF Goodrich (local tire shop) that Roadforce at between 10 to 20 pounds in the set. GM wont do anything for the 2 tires above 15 pounds. Guess what? Tire shop wont do anything because the manufacturer spec is 30 pounds.

 

At some point, Goodyear is going to tell GM ---- Go **** yourselves, the spec is 30 pounds! Fix your damn truck.

 

By the way, I had all tires Road forced 4 weeks ago, the Pico showed improvement and it felt great.

The feeling lasted about 3 weeks and now I am starting to feel it again.

 

I also have started hearing what sounds like a thud / bottoming out when hitting bumps with right front tire. The noise is heard when the shock expands. Anytime the shock has excess unexpected travel, I hear it.

 

I still believe it to be a bad shock or shocks in the front

[rpoffen]

I lemoned it over other issues.

It would occasionally lock out on the 2-3 shift at high rpm. My clutch wouldn't return a couple times as well. Other than that it wasn't bad. Would definitely get an auto if you were gonna run boost though.

 

Yeah, I have a '98 Mustang Cobra, the stock 5 speed (Cobra's of that era ONLY came with 5 speed) is total crap. It is rated at 330 ft-lbs, and the stock engine is 305 ft-lbs. Not much margin.

I replaced it with a Tremec TKO, which required only a few mods. This was minor compared to all the other mods I have in it.

[Enforcer]

Finally an article that includes trucks !

 

Is your GM vehicle making you sick?

http://www.cbsnews.com/news/is-your-gm-vehicle-making-you-sick/

[sideoftheroad]

Everyone please read these articles and email the editors so we can get some attention on our trucks. There is a gentleman named Daryl on the Facebook group that got the ball rolling. It's up to us to get attention on the trucks as well. Again please I'm begging everyone to do this. The SUV already has national attention!!!!!

 

I've even attached each editors email address (couldn't find the one for autoblog still working on it and will update when I get it).

 

Cbs freelance writer email address

[email protected].

 

Also if you're not a member of the Facebook group go join.

 

https://www.facebook.com/groups/GMissues/

 

 

 

 

 

 

Contact Stephen Elmer for autoguide

 

http://www.trucktrend.com/news/1512-bad-vibrations-owners-reporting-strange-harmonics-in-gm-fullsize-suvs/#.Vov4DmakiZ8.mailto

 

[email protected]

 

http://www.autoblog.com/2015/12/30/fullsize-gm-suvs-making-owners-sick-report/

 

 

 

 

http://www.usatoday.com/story/money/cars/2015/12/31/gm-vibration-complaints/78119904/

 

[email protected]

Edited January 5, 2016 by sideoftheroad

[Axe727]

Wish I would have seen this the other day. I just bought a 2014 GMC Sierra 3500HD Allison/ duramax with 33,000 miles on it. It was snowing the day I bought it and the truck drove fine so I thought. I couldn't get much over 50 as it was icy as hell and snowing on the test drive. Its going to the dealer tomorrow. It feels like there is a problem in the left front cv shaft or something and sounds like hell now! I have vibration around 60 to 70 but it makes a lot of noise at 25mph and up. I just spent the last 2 days reading this whole forum and it sounds like either pinion/gear, torque converter or driveline..... Very disappointed I bought it now that I read this forum.

[Homer650]

Wish me luck...dropped mine off this morning for visit #5. Giving them this one last try at it

[Sac1234]

I have a 2015 gmc z71 with a shake at 65-80 mph. Also oil leaking from transmission. 25000 miles. At dealership now!

[FormerFordGuy]

Mines at the dealer today for the over 70 shake. The service writer told me it was tires when I called to make my appt. I don't see this going in my favor.

[Axe727]

I will be pissed if they tell me tires! I have Toyo Open Country All Terrains on and they ride like glass and grip like tape! Tires are not the problem in my opinion!