Shake or Vibration Issues

deuce189 · January 27, 2016

This has really got me bummed since i was just now in the market for getting a newer 2014 and up Sierra pickup... i was about to go look at a denali now... but i feel like i need to test drive and see if i can feel the problem first hand... i just don't understand no fix or not that no one can come up with a direct reason for the issue... is GM engineering that dumb?? i believe not... as soon as the announce a common problem they know they will open the flood gates and everyone is going to run in asking for it to be fixed... i believe it's a mums the word situation...

I'm going to test dive a 2014 denali today... it has 25k miles... unfortunately it's not at a gm dealer so if i was to catch it i won't have an expert on premises to explain how they would handle it.. i'd suspect if this truck has the issue, this nissan dealership will be oblivious to it.

lsxrx7 · January 27, 2016

get a Ram

You will be dealing with engine problem instead

http://oppositelock.kinja.com/ram-vm-3-0-fatal-engine-failure-flaw-1755232142

May be you will be ok if you buy their lifetime warranty, you will need it

LongrangeLauber · January 27, 2016

This has really got me bummed since i was just now in the market for getting a newer 2014 and up Sierra pickup... i was about to go look at a denali now... but i feel like i need to test drive and see if i can feel the problem first hand... i just don't understand no fix or not that no one can come up with a direct reason for the issue... is GM engineering that dumb?? i believe not... as soon as the announce a common problem they know they will open the flood gates and everyone is going to run in asking for it to be fixed... i believe it's a mums the word situation...

I'm going to test dive a 2014 denali today... it has 25k miles... unfortunately it's not at a gm dealer so if i was to catch it i won't have an expert on premises to explain how they would handle it.. i'd suspect if this truck has the issue, this nissan dealership will be oblivious to it.

That's probably the reason why it's setting at a Nissan dealership right now honestly. Either that or someone couldn't afford their truck due to financial changes

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deuce189 · January 27, 2016

well we'll see. I have been seeing more Denali's for cheaper than expected if you think a 2 year old denali is cheap at 42k.

rpoffen · January 27, 2016

You will be dealing with engine problem instead

http://oppositelock.kinja.com/ram-vm-3-0-fatal-engine-failure-flaw-1755232142

May be you will be ok if you buy their lifetime warranty, you will need it

The article only mentions the eco diesel as having the problem. I wonder how many people actually opt for that engine. When I looked a few months ago, it was like a $3K option. With the price of gas these days, I doubt anyone would really want this option.

C6Bill · January 27, 2016

Agree with what has already been said, it is there for a reason. Dealerships and getting them dirt cheap on trade ins and from auctions. If I had found this thread prior to buying I never would have gotten out of my 2011. I really liked that truck, i just figured i would like the newer ones better, boy was i wrong lol

'

Edited January 27, 2016 by C6Bill

abominable z71 · January 27, 2016

Shouldn't the U joint take care of any potential misalignment issue?

The u joints on each end of the drive shaft have to be at equal and opposite angles to cancel out the angular velocity changes they go through during drive line rotation. Even though the drive line spins in a circular pattern the u joints themselves rotate in an elliptical pattern this creates velocity changes as they rotate. By having them at equal opposite angles the velocity changes cancel one another and the drive line spins at a near constant velocity. This is where the term CV joint comes from its a specially design joined to counteract velocity variation in drive shafts with unmatched angles like in the front half shafts on a 4wd. When the suspension compresses normally meaning both the front part of the spring in front of the axle and the rear portion of the spring behind the axle have force applied in the same direction the u joints keep the same angles relative to one another and everything is fine. Axle wrap is when the leaf spring is twisted meaning the forces applied to the front and rear of the spring are opposite of one another this cause the pinion flange to tip up and the angle of the 2 u joints no longer cancel each other and the velocity mismatch because of this angle change causes the drive line to vibrate.

ekimsinnigcm · January 28, 2016

Dropped in for service visit #3 today This is very upsetting because I really like my truck but I don't think I will buy another Silverado to get out of my vibrating one. Not only that but resale of ALL GM trucks from 2014 to at least 2016 will be affected. Proof of this is in the previous comments having other dealers not wanting to take them in on trade. I've been browsing the Ford dealers and it seems as if there are A LOT of very low mileage '14 and '15 GM trucks on the used lot.

Edited January 28, 2016 by ekimsinnigcm

sk252 · January 28, 2016

Posted a video of shake before. Had tires balanced less than 1000 miles ago. Truck vibration seems improved but still there. I think it was mentioned previously about the temperature. It had previously been rather mild temp wise and the truck was shaking more. Now that it's cold the vibration is less. Balance was done about a month ago. I think it's going in for its second visit soon.

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Edited January 28, 2016 by sk252

Jesse Davidson · January 28, 2016

It's funny how things work. For me this is my dream truck that I could never afford till I came across the deal I got and went over my max to buy it. My wife is also making 5yr sacrifice for me to have this. I have a 22yr old Chevy pick up that runs perfect but the frame rusted out. To bad it did, would've never went shopping..also thinking about starting a new thread of people that have test drove new trucks and found same issues. document what dealer, what truck by vin, so people will know to avoid. What do you think?

I was in the exact same boat... with the dream truck, not the 22 year old one part. lol

I have had my 2015 Silverado Crew Cab LT for a month and it has this console shaking issue. Taking to the dealership in the morning for that and a seatbelt problem. I'm not able to read the entire 515 page thread from 2013 until now. Has anyone been able to remedy this issue? I've seen some people talking about this buy back thing or tires/drive shafts out of alignment. I really love my truck and I don't want to give it up.

It seems to shake between 70-75 mph, but not all of the time. Sometimes it's more shaky than others. I've also been on smooth asphalt back roads and not felt it at all. Could it be something to do with rough concrete highways send the tires or something out of whack? I had a 90-something GMC a while back and the steering shook with the cab. Found out it was bad back tires.

Welcome to the club

You will be dealing with engine problem instead

http://oppositelock.kinja.com/ram-vm-3-0-fatal-engine-failure-flaw-1755232142

May be you will be ok if you buy their lifetime warranty, you will need it

Yes, as another poster said, the ecodiesels have issues, I have not heard of many issues with the gas engines. however I have since started seriously considering the Tundra .... now theres something I never thought I'd say haha

hotrodz37 · January 28, 2016

Mine vibrated from the u-bolts in the rear not being torqued to spec.... Mine were loose, they need to be around 135 ft. lbs. I believe. It fixed my problem. Worth checking just in case, all you need is a torque wrench and some elbow grease.

This was posted in another thread recently. I believe southern sierra's vibes were cured by torquing the u-bolts too. I know spec is 78 ft/lbs and I have tried my with no luck but the highest I have gone was 95 I think. I know southern Sierra torqued them down as tight as he could so maybe they are onto something. I might try cranking mine to 120 or so this weekend and see if it helps. Worth a shot and it's free.

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Edited January 28, 2016 by hotrodz37

Mcarlo24 · January 28, 2016

well we'll see. I have been seeing more Denali's for cheaper than expected if you think a 2 year old denali is cheap at 42k. My

My Truck and many, many others were bought at 20-25+% off MSRP... Mine was a DEMO with 1800k Miles... It's MSRP was 53.5K and I paid 39.5K.. That's 27% off MSRP... So I do not think that is Cheap... Keep looking... I bought mine last February which is just around the corner... Only other info I can offer is that Mine Had the 70+ MPH Vibration and a Balance/Tire Rotation fixed it... However, I am nervous about the next Tire Rotation and is why I follow this Thread Still..

Good luck

Wrench589 · January 28, 2016

My Truck and many, many others were bought at 20-25+% off MSRP... Mine was a DEMO with 1800k Miles... It's MSRP was 53.5K and I paid 39.5K.. That's 27% off MSRP... So I do not think that is Cheap... Keep looking... I bought mine last February which is just around the corner... Only other info I can offer is that Mine Had the 70+ MPH Vibration and a Balance/Tire Rotation fixed it... However, I am nervous about the next Tire Rotation and is why I follow this Thread Still..

Good luck

Correct me if I'm wrong, but I believe your experience is not the norm. Most folks with the 70+ mph vibration don't seem to get it resolved with balancing and/or new tires. Does make me wonder if the people doing the balance (on the ones that don't get fixed) are doing it correctly! We've discussed that numerous times before on this thread. Still a question, in my mind.

Zachlovesfood · January 28, 2016

This was posted in another thread recently. I believe southern sierra's vibes were cured by torquing the u-bolts too. I know spec is 78 ft/lbs and I have tried my with no luck but the highest I have gone was 95 I think. I know southern Sierra torqued them down as tight as he could so maybe they are onto something. I might try cranking mine to 120 or so this weekend and see if it helps. Worth a shot and it's free.

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Well to elaborate, from reading, the main issue that points towards the u-bolts is when people add a taller or shorter block to the rear end, and reinstall the GM u-bolts. From what I've read they're only made to install once, since once they're torqued down they stretch. Going tighter can help, but if you loosen them up, you'll have to go tighter to stretch them a tad bit further than before. Everyone's heard that, right?

So that's what got me thinking, as a metal fabricator. We often get the same metals in our shop, but they don't always weld the same or bend the same, etc. I had a bouncy/vibrating rear end, and I guess that axle was shimmying around under those u-bolts. Tightened them and it worked wonders.

This also led me to think, when people were installing taller lift kits with new u-bolts, they were getting u-bolts from companies that probably ordered them from another company... So in theory, they might have no idea of the quality, consistency of manufacturing, or tensile strength of the u-bolts they have in stock, thus leading to an inconsistency in torque specs with each lift kit... Or in my case, in was with the GM stock bolts.

Sorry for ranting. Try it man, I hope it helps.

deuce189 · January 28, 2016

Well i test drove a 2014 Denali 4wd crew cab short box w/ 5.3L just for shits and giggles... took it on the high way and i had it at 75mph for about 5 minutes with the cruise on....... no obvious shakes or vibration.. truck rode quite good. It had around 25k miles... i'd pick it up but why the heck would i get a denali without the 6.2 engine. Anyways, i plan on test driving more to find this infamous vibraition.