Jump to content

Shake or Vibration Issues

Silver space ship
 Share

Recommended Posts

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Got my truck back. New tire and balance felt way better. The first thing I did was push it to 70 mph on the tollway. Ride was pretty smooth up to about 68, then the console and passenger seat shook hard right as I reached 70 up to around 82. Then it settled down. Service guy tells me they couldn't have balanced the tires at the other dealership. All 4 were completely out of balance. Sad it has to be this way. Apparently GM is short on good mechanics.

Be aware, I've had mine balanced, they 2 weeks later they were all way out of balance, and the RFB numbers jumped dramatically... like 2 to 35 dramatically

  • Like 1
  • Replies 12.9k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

csckickass
csckickass

Well folks, I did it. After all the failed attempts at the Chevy dealer I traded it in for a 2015 Ram 1500 Larame. I have to agree with the other folks on here that have done the same thing, it was th

mafd2
mafd2

Apparently you and the other customer reps don't care. If you or GM would care y'all would put more effort in the matter. Just coming on the forum and stating the same repetitive posts and being a 3

DALaws
DALaws

Well I have some good news and bad news about my truck vibrations. Good news is that my truck has a significantly less vibration at speed. The bad news is my truck has significantly less vibration. Fo

Posted Images

Severado Enthusiast

Severado

Posted
Posted (edited)

Be aware, I've had mine balanced, they 2 weeks later they were all way out of balance, and the RFB numbers jumped dramatically... like 2 to 35 dramatically

What now? Driveshaft? Transfer case? Change the other 3 tires for new ones?

*Update*

NVM. I went back to about page 400 and found what I was looking for.

Edited by severado
  • Like 1
Smickie500 Enthusiast

Smickie500

Posted
Posted

I get really bad wind buffeting when I roll my back 2 windows down running 75 mph . It will shake the whole truck and is really loud. I think it is still buffeting with the windows up but I just can't hear it. I am wondering if anyone else has experienced that . I have a 2016 Sierra Denali 1500...I also have a bed cover to.

scooter484 Enthusiast

scooter484

Posted
Posted

Hey scooter484,

 

I am glad to hear that your dealership is taking care of you and working with you to resolve your issue. Do not hesitate to reach out to me if you need any additional assistance and I will contact the dealer on your behalf.

 

Kindly,

 

Anthony Z.

GM Customer Care

So Anthony, you should really talk to the dealership, they are brushing me off again on the tire issues and I have to buy a new tire again because they keep going bad. I took it for a second opinion yesterday and the tire was so badly out of round it would have taken 4oz and 6oz to fix it at Discount Tire.. hell you could see the tire hop in the machine.

 

Don Hewlett Chevrolet

(512) 681-3000

 

They say because I scrub the curb with my tires it is causing them to go out-of-round. I say BS on that.

 

 

344
Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

What now? Driveshaft? Transfer case? Change the other 3 tires for new ones?

*Update*

NVM. I went back to about page 400 and found what I was looking for.

They replaced all of my tires last time (final repair attempt) last week, vibration was greatly reduced, but still slightly present, I have noticed that the critical frequencies have changed though, the speed that the resonance hits is now lower than it used to be 70-72 instead of 74-76, same with the 43-46mph one, its not 40-44mph.

Jamesandrew4 Enthusiast

Jamesandrew4

Posted
Posted

Can someone help me make sense of this? The service manger does not know how to read it either do I. Pico picture attached. Lemon law lawyer has offered settlement from GM but that is based on them thinking the truck is within spec I was told it failed the pico then they sent this and said it didn't.

post-154643-0-89761200-1464802551_thumb.jpeg

post-154643-0-89761200-1464802551_thumb.jpeg

post-154643-0-89761200-1464802551_thumb.jpeg

post-154643-0-89761200-1464802551_thumb.jpeg

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

based upon that, your truck is within GM's made up spec of 22mg. Your largest vibration is a T1, which is something on the truck that rotates at driving speed, ie tires, rims, rotors etc. You will still feel the vibration with a pico scope reading in the teens, mine was 25 reduced to 16, then it went back up, and is currently low. but they didnt give me the reading. I still have a very very slight vibration, enough that I notice it. I would still argue with GM about it saying that any vibration is unacceptable. Be aware. that reading is only a 30s snapshot of the entire drive. they don't give the reading for the entire drive, so we could also possibly argue that we have no way to prove that those readings are truely the worst.

 

hope this helps

Snoringbear Enthusiast

Snoringbear

Posted
Posted

I get really bad wind buffeting when I roll my back 2 windows down running 75 mph . It will shake the whole truck and is really loud. I think it is still buffeting with the windows up but I just can't hear it. I am wondering if anyone else has experienced that . I have a 2016 Sierra Denali 1500...I also have a bed cover to.

About your wind buffeting w two windows down @ 75 mph; your truck, as most modern cars and trucks, was designed to drive at speed with the windows up so to optimize fuel mileage and quietness. Repeat this condition with any car or truck and you will see what I mean. However, I too enjoy driving with my window down at times. When so doing, I roll down my drivers window all the way, open vents to outside air, then crack the right rear passenger side window about two or three inches. By doing this buffeting is slight. Give it a try and let me know how it works for you. Btw, I too live in North Texas. God Bless Texas !

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Someone already posted something similar to this, but I am trying to find industrial standards on vibration to counter what appears to be a made up spec by GM and came across this.

 

https://www.ccohs.ca/oshanswers/phys_agents/vibration/vibration_measure.html

 

this is from the Canadian Center for Occupational Health and Safety and specifically says that you should reduce vibration because of "ill health effects" yes, i printed this to my arbitration

  • Like 1
Snoringbear Enthusiast

Snoringbear

Posted
Posted

Someone already posted something similar to this, but I am trying to find industrial standards on vibration to counter what appears to be a made up spec by GM and came across this.

 

https://www.ccohs.ca/oshanswers/phys_agents/vibration/vibration_measure.html

 

this is from the Canadian Center for Occupational Health and Safety and specifically says that you should reduce vibration because of "ill health effects" yes, i printed this to my arbitration

Jesse D, wondering what you hope to get out of your arbitration? Is there a formula? Or, will you hope to get a full refund? Just curious.

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Jesse D, wondering what you hope to get out of your arbitration? Is there a formula? Or, will you hope to get a full refund? Just curious.

All I want is my money back so I can go to a brand that actually builds a truck properly and takes care of their consumers

Rock1500 Senior Enthusiast

Rock1500

Posted
Posted

About your wind buffeting w two windows down @ 75 mph; your truck, as most modern cars and trucks, was designed to drive at speed with the windows up so to optimize fuel mileage and quietness. Repeat this condition with any car or truck and you will see what I mean. However, I too enjoy driving with my window down at times. When so doing, I roll down my drivers window all the way, open vents to outside air, then crack the right rear passenger side window about two or three inches. By doing this buffeting is slight. Give it a try and let me know how it works for you. Btw, I too live in North Texas. God Bless Texas !

My car does it and it's so bad it gives me a headache so I can never roll down the back windows. like you said, all cars do it. It comes in handy having the sliding back window to avoid this :)

 

Sent from my SM-N900V using Tapatalk

abominable z71 Enthusiast

abominable z71

Posted
Posted (edited)

Can someone help me make sense of this? The service manger does not know how to read it either do I. Pico picture attached. Lemon law lawyer has offered settlement from GM but that is based on them thinking the truck is within spec I was told it failed the pico then they sent this and said it didn't.

Do you have a vibration issue above 70 mph? If so the pico results don't show them testing the truck at that speed. It looks like you have an All Terrain presumably with 275/55R20 tires. If that's the case a T1 vibration at 70 mph should occur at 12.3 Hz T2 at 24.6 Hz and T3 at 36.9 Hz. 9.4 Hz as shown on the paper work occurs at about 53.5 MPH. So of course it's within spec at 70 mph when data was taken at 53 mph. it's like dropping your phone from 4 feet and it not breaking and then claiming it won't break if you drop it from 8 feet. Service manager can't read a PICO???? But it's within spec, what a load!

Edited by abominable z71
Snoringbear Enthusiast

Snoringbear

Posted
Posted

My car does it and it's so bad it gives me a headache so I can never roll down the back windows. like you said, all cars do it. It comes in handy having the sliding back window to avoid this :)

Sent from my SM-N900V using Tapatalk

I have the sliding back window as well. I've experimented with varying degrees of it opened/closed along with the same with various combinations with front and rear windows. My best luck has been with the drivers side window all the way down, having the RR passenger side window cracked about two or three inches - along with the front vents set to allow outside air to flow through. But, that's just me. I'm certainly no expert on this for sure :)

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
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Newduramaxh*ar
      DTC P2C48 auxiliary cooling pump

      By Newduramaxh*ar · Posted

      I tried tapping it.  This might sound like a dumb question, you should feel vibration or some type of noise when it turns on? Can someone please verify? Thank you all!
    • Chuck FB
      first oil change - 2026 2500HD gas

      By Chuck FB · Posted

      I feel better now for my own view point and actions or lack there of towards the dealership service theme reading your post and others. GM corporate is who offers the two free oil changes on the HD trucks and I bought my truck in Feb of 2025 and those oil change offers run out within 2 years I believe and I highly doubt I will be using either one of them. I had asked if I could officially give those free services to another customer ( a friend ) and they said no, its all a GM corporate thing based on the vehicle in question. What that service advisor did however was go into a little story about how such and such customer was denied engine warranty because he had done his own oil changes because then they are not documented ... you see where that goes and so an employee playing the game of scaring the customer into having the service work done there most certainly triggered my thought process. At a later date I did talk to the person who handles warranty claims at the dealership and she said to be sure to document the oil changes and keep receipts for the oil and filter ( coped the receipts from cases of Mobil oil and case of filters I bought from them ) and the vehicles VIN, the date of service, mileage etc and staple that together as a record I would give them if that was ever needed and I keep my own log book for services for each vehicle as well. Oh and about 8 months after I bought the truck the dealer starts calling me to offer a maintenance service since they haven't seen my vehicle show up on their system ... for the mere fee of 300.00 Canadian to change the oil and rotate the tires and a few other minor checks and I declined the offer, I get the call again a couple of months later for the same thing and she could tell I was not interested and she asked if they should take my name off the call list and I said yes, do that !.    By the way did you happen to keep your factory oil filter to open it up and see the surprises inside as I expect some will show up as per the odd little sliver of metal shaving and particles that the filter does trap along with bits of grey silicone sealer that come off of the inside edge of mating surfaces. I have cut open every filter so far on my truck although few miles but have changed the oil often and the second filter was vastly better with very little of anything, that first filter was the unsettling one as I expected it would be. 
    • OnTheReel
      OCI, not when but why?

      By OnTheReel · Posted

      I get why they do this…but man…not ideal. I only extract on inboard boat engines because the drains are buried and even then I hate it because it’s easy to leave a quart behind with that method.   They should market it as an “oil refresh” not oil change!
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      I only get oil changed where I can watch. Valvoline pulls through the dipstick into a see thru glass. When done they show me the dipstick. About the only way they can mess up is using the wrong oil. But that secret wouldn’t stay secret long. Honda uses TQ wrenches on everything. You can watch through a plate glass window. Discount tires does that with tires. Trust but verify. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I would not argue that with you. It would be pointless to argue against the truth and you speak the truth.    My question and in fact the entire point of this thread is an exploration into the levers of wear which happens no matter how well we maintain our powertrains.    Some of these levers we exert a good deal of influence over which can and do result is lower wear, longer powertrain life. Some others we are sort of stuck with.    An engine is typically done when the ring to bore seal no longer is able to do the job effectively. Normally the first thing to go in a engine otherwise well maintained and adult driven is this seal.    Looking into the means, methods, products and attitudes that influence the rate of wear seems a worthwhile inquiry to me.     

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...