Jump to content

Recommended Posts

Posted

The chevy dealer my brother works at, he run service had a GM engineer out last week looking at the problem and he was perplexed. Basically said they were fkd and did not know what to do. It is far more than is just being posted on this thread. They have 3-5 coming back every week and I suspect there is more than one issue causing the vibration.

 

 

Sent from my iPhone using Tapatalk

Posted

The chevy dealer my brother works at, he run service had a GM engineer out last week looking at the problem and he was perplexed. Basically said they were fkd and did not know what to do. It is far more than is just being posted on this thread. They have 3-5 coming back every week and I suspect there is more than one issue causing the vibration.

 

 

Sent from my iPhone using Tapatalk

The engineer was perplexed? I call BS. No way that after all these years they still don't know what's causing the problems.
Posted (edited)

You can call BS until you are blue in the face, but it wouldn't surprise me one bit if GM really didn't know by now what the issue was. However- even if they did know what the issue was, I also wouldn't be surprised if they simply just let the issue go or sweep it under the run and address it when the 4 year refresh comes out in 2018. GM and other auto manufacturers like to do that. Saves them millions. And who cares about a few thousand dissatisfied customers who go to Ford or Crapota. They dont. Hell, you got Ford and Crapota owners who have dumped their pieces of crap over stupid things too and come over to GM. But we just want to believe that 1 manufacturer is capible of building a trouble free vehicle that they stand behind 100% and won't give you any shit over. Those days are gooooone, my friends. long gone.

Edited by Colossus
  • Like 1
Posted

You can call BS until you are blue in the face, but it wouldn't surprise me one bit if GM really didn't know by now what the issue was. However- even if they did know what the issue was, I also wouldn't be surprised if they simply just let the issue go or sweep it under the run and address it when the 4 year refresh comes out in 2018. GM and other auto manufacturers like to do that. Saves them millions. And who cares about a few thousand dissatisfied customers who go to Ford or Crapota. They dont. Hell, you got Ford and Crapota owners who have dumped their pieces of crap over stupid things too and come over to GM. But we just want to believe that 1 manufacturer is capible of building a trouble free vehicle that they stand behind 100% and won't give you any shit over. Those days are gooooone, my friends. long gone.

 

I posted an article on this thread awhile back (you can do a search if interested) about the upcoming changes for the 2018 model. As I recall, (the frame theorists will love this, lol) a new stronger and stiffer frame is on the way. There was an interesting comment that I didn't understand; stated that the new frame would be back fitted compatable, something like that. Also, new body will be mostly aluminum. And, GM wil introduce a V-6 Turbo. But, I think these were all rumors, not necessarily facts. So, we shall see....

Posted

Found it interesting on you tube there are some F150 owners with fully boxed frames having vibration issues too. How many no clue but appears there out there too. One guy reported Ford thru a bunch of tires at it and checked drive shaft to no avail. Ford finally said operating normal and sent him on his way.

Posted

My 2014 Silverado Z71, 4.3L V6 has a vibration at 30MPH, 40MPH and 50MPH.. It comes and goes.. I have put the speed control on as soon as I feel it and the vibration will continue for a bit and then disappear. If I accelerate or decelerate 1-2MPH the vibration goes away.

 

The one thing I did notice is that the RPM's when I start to feel the vibration for all 3 speeds is consistently around 1200 rpm.

 

The truck was fine until I took it in for a service update 2 weeks ago.. Does this make sense to anyone??

 

Almost feel like it is some type of shift point problem..

 

Blizz

Did you have the Tires Rotated during the service? If so, get them balanced and or Road Force Balanced..

Posted (edited)

99.9% sure it all has to do with the AFM "active fuel management" system.. in every instance, the engine is going from the V6 mode to V4..

 

Blizz

Edited by fmblizz
Posted

99.9% sure it all has to do with the AFM "active fuel management" system.. in every instance, the engine is going from the V6 mode to V4..

 

Blizz

 

This has been covered. The vibration from 70-80 has nothing to do with AFM. Some trucks with the vibe have a programmer with AFM removed and still shake at highway speeds.

  • Like 1
Posted

Just telling you what I was told. My brother has been giving me info on this for months when I told him I was looking at new trucks and told me to stay away. They do not know what it is. Could be length of driveshaft, wheel configurations , bad tires, a tooth out of spec gear in rear end or a combination of any of the above. It popped up on a new suburban the owner was driving and another similar problem on a corvette noted in this thread. Sounds like a bad supplier that was outfitting some part of the drivetrain. Tires and wheels don't fix it and they have shimmed trannys to change angle of driveshaft... go figure. Bottom line is it's a shitbox and I am a chevy guy all day but would not touch a GM product at this point

 

 

Sent from my iPhone using Tapatalk

Posted (edited)

Well I thought my vibrations/shakes were fixed after getting my driveshaft rebalanced, but today I drove on the interstate for about two hours and the shake/shimmy is still there. Rebalancing the driveshaft defiantly made the truck ride smoother and made it more obvious that the shake was coming from the rear end. I noticed a few pages back, someone posted a video of the rear axle hub face spinning and it not being round. So today, I tried the same the thing and I have the same results as the previous video. I think I'm going to try to find a tire shop that balances tires while the tires are on the truck and if this solves the 75+ mph shake I'm having, then I will be ordering some axles from Moser Engineering. The hub face my video is obviously not round and is that within specs??? Has anyone tried swapping out the axles with GM axles or aftermarket axles??

 

 

Edited by MRW412
Posted

i have a 2014 chey that was smooth as glass until it hit 58k klms and then all the vibration sh&t started and gm is as perplexed as i am. how does a truck go that far and then start all this crap

Posted

A poorly engineered truck will never be right. Clearly a design issue that transcends multiple components and systems on the truck. Push for buyback. The more that do the bigger issue it will become

 

 

Sent from my iPhone using Tapatalk

Posted

Well I thought my vibrations/shakes were fixed after getting my driveshaft rebalanced, but today I drove on the interstate for about two hours and the shake/shimmy is still there. Rebalancing the driveshaft defiantly made the truck ride smoother and made it more obvious that the shake was coming from the rear end. I noticed a few pages back, someone posted a video of the rear axle hub face spinning and it not being round. So today, I tried the same the thing and I have the same results as the previous video. I think I'm going to try to find a tire shop that balances tires while the tires are on the truck and if this solves the 75+ mph shake I'm having, then I will be ordering some axles from Moser Engineering. The hub face my video is obviously not round and is that within specs??? Has anyone tried swapping out the axles with GM axles or aftermarket axles??

So every time you rotate tires it can change your truck's balance. Right!

 

Well I thought my vibrations/shakes were fixed after getting my driveshaft rebalanced, but today I drove on the interstate for about two hours and the shake/shimmy is still there. Rebalancing the driveshaft defiantly made the truck ride smoother and made it more obvious that the shake was coming from the rear end. I noticed a few pages back, someone posted a video of the rear axle hub face spinning and it not being round. So today, I tried the same the thing and I have the same results as the previous video. I think I'm going to try to find a tire shop that balances tires while the tires are on the truck and if this solves the 75+ mph shake I'm having, then I will be ordering some axles from Moser Engineering. The hub face my video is obviously not round and is that within specs??? Has anyone tried swapping out the axles with GM axles or aftermarket axles??

So every time you rotate tires it can change your truck's balance. Right!

 

Posted

Only way to balance is wheels and tires on the truck and as the tires wear and rotations are done vibrations can be different. Better or worse.

Posted

99.9% sure it all has to do with the AFM "active fuel management" system.. in every instance, the engine is going from the V6 mode to V4..

 

Blizz

BS.... My trucks AFM has been off for years and it still vibrated until I had the driveshaft fixed.

 

RT

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • Maybe, but it seems he is the only one that has backed up data to prove what he is stating. I think he is doing this more because he enjoys it and wants to get the information out to us. He's got the knowledge and access to the proper equipment and having the funds doesn't hurt.  I would love to do what he is doing and would do it if and when I hit the Powerball.  I'm not a Tribologist by any means but love to learn what I can.   I would bet there would be doubting people out there if a completely independent lab with high quality work and highly respected in the automotive industry, put out information like this.  The world can't be pleased, one just has to take the information that they are given, do more of their own research to find actual lab data to back up what they are trying to figure/find out.  Most don't bother, they just want to believe what they first see.     I don't have the minimax but my 6.2 in my 2019 Silverado with 64k miles shows excellent UOA results with 0w-20 and for my own purposes 5w-20.  Since not much of a change using 5w. I liked the data sheet information on the SS 5w-20 and figured I would give it a try.  Still the same viscosity at 100℃.   In the end we all just do what makes us happy, life is too short to get upset over trivial social media.   On a side note, I do feel GM has dropped the ball and just cares about the bottom dollar and not quality anymore.  "Like a Rock" has been long gone.  Seems "Built Ford Tough" has as well.
    • Better than stock but that's like putting lipstick on a pig
    • Hello, my 3 month old Sierra Elevation wont recognize a trailer with electric brakes? All the lights work correctly, but no power to the brakes?   This is the factory installed brake controller. If you manually push the knob, the display shows the power % but does not light up like my 2022 silverado.   I have an appointment with the dealer, but was checking to see if anyone else has seen this issue.    Thanks, 
    • Been using SS 0w-20 from new, but wanted to change to the 5w-20 because I liked the data on the data sheet, to me it seems like a little better product. But as you can see, not much difference. This is also with running a mix of 10 gallons E85 to a tank topped with 93. It isn't a flex fuel vehicle so any higher I get a CEL for running lean on both banks. Yes my mileage takes a hit. Instead of 20 mpg I normally get on trips I get 17mpg. This is also using EaO17 filter.  What is amazing is I have the AMSOIL cone filter on it since I have the GM Performance intake installed and that air filter has 44k miles on it.  I just take it out and shop vac it off once a year.  I use the upholstery tool on my shop vac.  Works well.   
    • So, lot's of googling and reading, and a trial fit found, that indeed they hit the newer fatter caliper. I did some re-testing today, and found just 3/16" worth of washers was enough for the wheel to spin freely. I added 2 more on each, and again it spun freely. Tested lock to lock with the 4 washers, about 5/16" not quite the 3/8" Im considering, but pretty close. No issues. I've been looking at the BORA .375" spacers and using extended lugnuts to get back lost thread due to the spacer. All the ET lugs I've seen are all .33" reach inside the wheel lug holes. For those that don't like spacers or think they're unsafe, I think it depends on what type of spacers you're using and making sure you get good quality hubcentric ones, and if you're using bolt on ones, regular mainenance, checking the spacer lugs. Not wanting or needing that much spread. Looking for the minimum that will let me run these rims and tires.  it does look to stick out a little, but I really want put these on. and use the stock all-terrains in the winter. 
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...