Shake or Vibration Issues

Snoringbear · October 23, 2016

The front driveshaft was the cause of vibrations in the Dodge 2500s, and that was also made by AAM...I wouldn't dismiss it.

For the radio reception, has anyone considered the coax size? It's a 1/8" diameter, old stuff was nearly 3/8"...can't imagine that doesn't cause some signal loss.

Sent from my SM-T350 using Tapatalk

Could it be that GM has switched from coax to fiber, hence the smaller diameter? I would like to think so. Oh, my wish list for a fix is my right side mirror, every week or two it won't open/close on the first push of the button. Sometimes takes a couple of open/close cycles. Had it checked at my last oil change but it couldn't be repeated. So, looking for a Shaman to drive out the evil spirit. Interestingly, I had the same exact problem on my 2008 Silverado. Guess it's in the GM gene pool or something

Dnt · October 23, 2016

the snoring bear has solved the mystery. As the bear is driving along on the highway at 74mph his mirror is slightly closing and opening causing a T1,T2 or T3 vibration (whatever the heck that is) looks like it is at around 43 Hz at 74 mph and inducing a vibration reading at 13 26 or 39 Hz. Dang I am exhausted now after reading all this intellectual information, you boys are so edumacated. I knowed I should have went to college to be a rocket scientieest LOL Now get out there in the driveway and tear off those pesky rear view mirrors BAM problem solved

Snoringbear · October 23, 2016

the snoring bear has solved the mystery. As the bear is driving along on the highway at 74mph his mirror is slightly closing and opening causing a T1,T2 or T3 vibration (whatever the heck that is) looks like it is at around 43 Hz at 74 mph and inducing a vibration reading at 13 26 or 39 Hz. Dang I am exhausted now after reading all this intellectual information, you boys are so edumacated. I knowed I should have went to college to be a rocket scientieest LOL Now get out there in the driveway and tear off those pesky rear view mirrors BAM problem solved

Lol! Good humor! Far too scarce on this thread! As one vet to another, enjoyed it. And, btw, thank you for your service

Jesse Davidson · October 23, 2016

Thanks Jesse, I'm making good progress. I was released to drive a couple days ago. So, that's been kinda like being let out of jail. Speaking of (trucks not jail ) I believe you mentioned awhile back that you had agreed to swap your problem truck for a 2016 Denali? Did you make the swap and if yes how does your new truck ride? Are you going to flip it for a Tundra?

Glad to hear that. Unfortunately no the swap has not happened yet. I'm actually in the middle of writing a scathing email to multiple GM execs (for the second time). The dealer has been holding the truck for a month and nothing has happened. I've emailed or called my rep 6 times since October 6th and he isn't responding (and this is the second time hes gone MIA). I'm going to give them an ultimatum of November 2nd (7 business days) to finish the deal. I went and talked to the dealer and my agent said that he doesn't know why mine is taking so long. he says they normally take 12 weeks. Mine has been going on for nearly 20 weeks now. I have been more than patient with them. It's time to see some action.

As for the ride, I took it out for a long test drive, and it is substantially better, but there is still a very very slight vibe/shake in them, but as long as it doesn't get worse as I drive it, I'd be willing to live with it.

Congrats on being able to drive again, I've had a couple knee surgeries, so I know the feeling of being stuck. its no good

ohh and its a 2017 Denali with a 6.2

For anyone who wants the email addresses to the CEO, President, VP, etc. click here and scroll down

SilvgMc2017 · October 24, 2016

Does anyone have a video or willing to make one with a truck that doesn't have the vibration? I don't believe I'll be the only one who benefits from it.

Thanks in advance!

Brakin7 · October 24, 2016

Strangest thing. Put my ~50lb toolbucket at the tailgate (closed). Doesn't seem to vibe now! At least on my road, which it does every morning on the way to work. There's another stretch where I have to do 45 in town and it is miserable. Guess we will find out tomorrow morning...

Brakin7 · October 24, 2016

Here's what I sent Chevy customer care, for anyone who wants to know.

2015 4x4 Crew Cab Silverado. Had it since August. Less than two months of ownership... All mods and suspension work done for Dealership by third party. Just under 21k on odometer, bought with 16500 on the odometer.

What. A. Nightmare.

Truck has already failed to engage in 4wd, leaving me to get pulled out of a small hole in my own driveway. When coming out of the hole, entire truck lurched forward and made a hellacious cracking sound. Babied it fifty feet to my house, towed to dealership, halfshaft had snapped, apparently latent 4wd engagement. A week before this I had to take to dealership for Airbag Recall.

When dealership fixed halfshaft, truck was horribly out of alignment, steering wheel at 45°. Made ME pay $60 for an alignment as that is not part of GM service after axle replacement.... even though I'm sure the tech had to unbolt the ball joints to access the shaft...

Rear driver side rim ($400) got chewed up all to hell while trying to drive out that day, from spinning in the mud... because of a faulty 4wd.

Dealership installed black vinyl on bumpers and Chevy emblems, it is already peeling around all the edges.

Tires are showing bad chop on all 4, and rock rash like you wouldn't believe on 3 of them, indicating to me that there is now another alignment necessary to prevent a $1500 set of tires from getting ruined.

now, for about two weeks, I have a HORRIBLE vibration in my seat at 35-45mph and 70-80mph.. A quick search finds 650 pages of the same issue on one site, and 250 pages on another. Weight in the bed tones down the vibration, but it is still there.

I will be contacting the dealership tomorrow. I will be taking it in for a rotation and balance and to address ALL of these issues For a truck that cost FIFTY GRAND++, this is absolutely unacceptable. Over $2k worth of damaged parts and tires, within two months... I really hate to say it, because I love my truck, but within 4k miles and two payments, I'm almost positive that the dealership will not fix all, or any, of these issues.

Oh, not to mention the dealership experience. Simply horrible. Wife bought a 15 Sonic the NEXT DAY, was told she would get a $100 referral check, that only took, oh 20 phone calls and two months. Not to mention it took 35 days for her tags to come in and the dealership was as nonchalant as could be. Almost feels like, "sir, thanks for the 80grand, now piss off".

Unbelievable. Even if these issues are fixed, I will probably NEVER buy a GM product again... but thats okay, as long as they get their $$$, right?

Signed,

Seriously Disappointed.

EspoMan · October 24, 2016

My 2016 has the shakes too. Started at around 800 miles. Drove it three hours today from SoCal to Vegas. What a nightmare. Shook like crazy the entire time and now I have a whining noise the entire time it's under constant acceleration.

https://youtu.be/weo7iQr8nrg

Edited October 24, 2016 by EspoMan

Brianibew · October 24, 2016

My 2016 has the shakes too. Started at around 800 miles. Drove it three hours today from SoCal to Vegas. What a nightmare. Shook like crazy the entire time and now I have a whining noise the entire time it's under constant acceleration.

https://youtu.be/weo7iQr8nrg

I had the whine under acceleration. Was something in the transfer case. Dealer replaced the transfer case and noise went away.

Willyone · October 24, 2016

My '16 Z71 gets dropped of tomorrow AM for the shakes, visit #2. We'll see how that goes....I'm hope'n. I'll post results be they good or not so good.

abominable z71 · October 24, 2016

My 2016 has the shakes too. Started at around 800 miles. Drove it three hours today from SoCal to Vegas. What a nightmare. Shook like crazy the entire time and now I have a whining noise the entire time it's under constant acceleration.

https://youtu.be/weo7iQr8nrg

The classic gm shake or vibration. Well everyone was hoping they had it figured out for the 15 model year, then the 16 model year, 17's are now out, maybe they figured it out for the 17's LOL. Maybe your dealer will find something that fixes your issue but results haven't been encouraging through out the years. Good Luck.

Willyone · October 24, 2016

The classic gm shake or vibration. Well everyone was hoping they had it figured out for the 15 model year, then the 16 model year, 17's are now out, maybe they figured it out for the 17's LOL. Maybe your dealer will find something that fixes your issue but results haven't been encouraging through out the years. Good Luck.

I'm guessing GM knows what the problem/s is and for whatever reason they refuse to address the problem/s.

sdeeter19555 · October 24, 2016

Strangest thing. Put my ~50lb toolbucket at the tailgate (closed). Doesn't seem to vibe now! At least on my road, which it does every morning on the way to work. There's another stretch where I have to do 45 in town and it is miserable. Guess we will find out tomorrow morning...

That's reminiscent of frame beaming diagnostics the 2500s suffer from...add weight, see if it's still there.

Sent from my SAMSUNG-SM-G900A using Tapatalk

abominable z71 · October 24, 2016

I'm guessing GM knows what the problem/s is and for whatever reason they refuse to address the problem/s.

I find it hard to believe they don't know what the issue is. My guess is the fix is expensive or difficult and since it's a small number of vehicles an actuary somewhere has crunched the numbers and determined it's cheaper to buy back a few trucks and go on not admitting there is an issue, they know few people have the issue and fewer still are willing to go through the lengths required for a buy back. Unless it affects the bottom line or causes some deaths this platform will be made for another couple years and replaced by a redesign without a true fix ever coming to light. It would be nice if there was whistle blower in the GM ranks that leaked out a document stating what the issue is, if such a document even exists, it may be such a small percentage they haven't invested the time to figure out what the issue is, unlikely considering they don't want to carry it over to the next design since they do use some parts from one design to the next.

Willyone · October 24, 2016

I find it hard to believe they don't know what the issue is. My guess is the fix is expensive or difficult and since it's a small number of vehicles an actuary somewhere has crunched the numbers and determined it's cheaper to buy back a few trucks and go on not admitting there is an issue, they know few people have the issue and fewer still are willing to go through the lengths required for a buy back. Unless it affects the bottom line or causes some deaths this platform will be made for another couple years and replaced by a redesign without a true fix ever coming to light. It would be nice if there was whistle blower in the GM ranks that leaked out a document stating what the issue is, if such a document even exists, it may be such a small percentage they haven't invested the time to figure out what the issue is, unlikely considering they don't want to carry it over to the next design since they do use some parts from one design to the next.

All that makes sense. And I totally agree that GM needs to figure out why they vibrate, if for no other reason so the problem doesn't carry on to new platforms. I'm and old fart, retired, and no way I can afford to get screwed at this point in my life. All I can do is hope the fk they figure the vibe out and fix it.