Shake or Vibration Issues

[keakar]

 

My vibes are worse on rough roads, taking it in on Friday for the tires (I have aftermarket Coopers) and think thats mainly what my problem is. Will report back!

how do you already have aftermarket coopers on a brand new truck?

 

obviously if your original tires had vibrations before they were removed then its something else but if you only had vibrations after changing tires on your own, then your vibration issue is something different then the one we are having and your issue might just be a tire balancing issue or something rim related.

[hotrodz37]

how do you already have aftermarket coopers on a brand new truck?

 

obviously if your original tires had vibrations before they were removed then its something else but if you only had vibrations after changing tires on your own, then your vibration issue is something different then the one we are having and your issue might just be a tire balancing issue or something rim related.

 

They came off of my other truck. The stock Goodyears seemed fine, but I hardly put any highway miles on them and. well, with this saga the vibes can show up at anytime. Hoping this one is just tire related. Already been through one buyback.

[iLlama]

Well I drove a lot this weekend to try and find common things that cause it to vibrate worse. No matter what/where it still vibrates furiously at 72mph+. I called to schedule another service appointment and the first appointment they could get me in is October 9th... Over 2 weeks away.. I expressed my disappointment but he said they are dealing with a ton of recalls right now. The worst part is how much I drive, I hate racking up these miles on the truck.

Edited September 23, 2014 by iLlama

[PMurray]

My Sierra (40 - 50 mph shaker) got a new (2015?) rear end installed y-day. SURPRISE! No more shakes, tiny rumble strips, wobbles, NOTHING! Dealer service manager and I were both very doubtful, but GM seemed certain that this would fix, and it did. Will report if anything changes, but for now I am very pleased and satisfied.

[fondupot]

My Sierra (40 - 50 mph shaker) got a new (2015?) rear end installed y-day. SURPRISE! No more shakes, tiny rumble strips, wobbles, NOTHING! Dealer service manager and I were both very doubtful, but GM seemed certain that this would fix, and it did. Will report if anything changes, but for now I am very pleased and satisfied.

 

Good to hear!

[BluByU14]

My Sierra (40 - 50 mph shaker) got a new (2015?) rear end installed y-day. SURPRISE! No more shakes, tiny rumble strips, wobbles, NOTHING! Dealer service manager and I were both very doubtful, but GM seemed certain that this would fix, and it did. Will report if anything changes, but for now I am very pleased and satisfied.

 

 

 

 

Glad to hear your truck is fixed! Did you ever have any issues at highway speeds (65+ mph)?

 

Thanks!

[PMurray]

BluByU asked-

Glad to hear your truck is fixed! Did you ever have any issues at highway speeds (65+ mph)?

 

No. From day one it was only between 40 and 50 mph.

[BlueWrapper]

My Sierra (40 - 50 mph shaker) got a new (2015?) rear end installed y-day. SURPRISE! No more shakes, tiny rumble strips, wobbles, NOTHING! Dealer service manager and I were both very doubtful, but GM seemed certain that this would fix, and it did. Will report if anything changes, but for now I am very pleased and satisfied.

 

What exactly does new rear end mean?

[PMurray]

What exactly does new rear end mean?

 

As I understand it, everything in the drivetrain after the driveshaft with the exception of the wheels and tires.

[Silverado-Hareek]

Truck started vibrating again yesterday for the first time since late spring/early summer. As I've stated before, I believe my vibration might be tire related because it seems to be affected by temperatures. To quickly recap, I bought the truck in February with no vibrations. As the weather started warming in the spring the vibration showed up. It went away once the summer heat got here and the truck has been fine until yesterday. Well this past weekend the temperatures started dropping again and we're now hitting low 70's during the day and 50's at night. As opposed to summer when we were hitting low 90's during the day and mid 70's at night. So the vibration appears to show up when outside temperatures are between 55-75 degrees and the vibration starts around 65 mph and up. I want to believe it's the tires based on those assessments as I would think it would vibrate all the time regardless of temperature if it was mechanically related. But admittedly, I WANT that to be the issue because then I know it has a solution: replace the tires. Either way, this sucks to be going through on a brand new truck. I've said it before and I'll say it again, this isn't your grand daddy's GM anymore. Quality control is non existent and reliability is a complete gamble. Prospective truck buyers would be very wise to shop around and thoroughly test drive multiple brand trucks. Loyalty to USA brands ends when they don't care about the customer in return....in my opinion.

[seansharley]

Here's my .02¢

Tires ARE made of different compounds than a few years ago, that's 100% fact

New trucks are more fuel efficient, and yet can carry, and haul more than in the past

I'm not arguing the fact that there's issues, every manufacturer has issues.

GM has known about "beam shake" for a few years

My dealer stepped up, did their best which was great, Michelin tires made a huge improvement, rode perfectly for around 5,000 miles, then I think I felt the 75 mph vibration coming back. At that point I decided to make the truck look the way I wanted with aftermarket wheels, little lift, and larger tires. So far so good.

[2strokesmoke]

My gut feeling says it is still the transmission thats causing these Vibrations!

I talked with a friend who balances stuff for a living, what he does is mainly commercial stuff for factories, clutches, fabricated stuff ect.

When we discussed my vibration issues with the truck, he explained the biggest factor for vibrations would be spining mass, followed by heat, followed by lubrication.

Also the union of these combined causing vibrations. He advised me then that the area where the tranny mounts to the truck may need to be stiffened, or the opposite by installing absorption material on body.

Idealy mounts serve this purpose but softening them up on a stiff frame may be worse. Next mass and heat, mass has to be balanced properly! Stacking mass objects together that are balanced individually can still spin with vibration like a bent driveshaft welded on that spins oddly but still balanced !

Heat robs power and starves bearings of lubrication, also metals expand with heat causing less clearance for spinning mass, also true the opposite will occur when cold, but hydraulic oil pressure in critical areas could be off now causing issues with your tranny. In a nut shell, we both agree this will not be solved by your tires! You may be changing some or part of this energy absorption by switching rims tires, but the biggest area one needs to experiment is the engine, tranny body mount areas and driveline mount areas.

If you lift up your carpet on many small cars, there is black melt sheets applied to key areas also in the trunk uder your spare. This is there to remove noise and road vibrations. This is what needs to be tested at these key mounting areas like tranny and engine.

I hope someone figure this out, also maybe the direct inject engine has bugs too but I doubt that theory.

[Silverado-Hareek]

My gut feeling says it is still the transmission thats causing these Vibrations!

I talked with a friend who balances stuff for a living, what he does is mainly commercial stuff for factories, clutches, fabricated stuff ect.

When we discussed my vibration issues with the truck, he explained the biggest factor for vibrations would be spining mass, followed by heat, followed by lubrication.

Also the union of these combined causing vibrations. He advised me then that the area where the tranny mounts to the truck may need to be stiffened, or the opposite by installing absorption material on body.

Idealy mounts serve this purpose but softening them up on a stiff frame may be worse. Next mass and heat, mass has to be balanced properly! Stacking mass objects together that are balanced individually can still spin with vibration like a bent driveshaft welded on that spins oddly but still balanced !

Heat robs power and starves bearings of lubrication, also metals expand with heat causing less clearance for spinning mass, also true the opposite will occur when cold, but hydraulic oil pressure in critical areas could be off now causing issues with your tranny. In a nut shell, we both agree this will not be solved by your tires! You may be changing some or part of this energy absorption by switching rims tires, but the biggest area one needs to experiment is the engine, tranny body mount areas and driveline mount areas.

If you lift up your carpet on many small cars, there is black melt sheets applied to key areas also in the trunk uder your spare. This is there to remove noise and road vibrations. This is what needs to be tested at these key mounting areas like tranny and engine.

I hope someone figure this out, also maybe the direct inject engine has bugs too but I doubt that theory.

 

You might be right for the incurable vibrations described in this thread. For some people, new tires or a new rear end fixed the problem completely. As has been stated previously, there appears to be 3 different types of vibrations in these trucks only 2 of which have a solution. You might be right for the third problem.

 

Also I doubt direct injection has anything to do with it since the motor isn't the source of the vibration and GM has been using this engine for a few years now already. It's only new to the truck/SUV line up.

[babybluebeast]

I am pretty lucky as i do not have the vibrator option as of yet. My truck is a 9/13 build from Mexico and i have about 4200 miles on it. I haven't seen anyone with a 2500 report the issue, or at least to this extreme so it appears that it is a 1500 issue. Based on that, it seems that it has to be the transmission, drive shaft or rear end. I would be willing to bet the reason they cant resolve it is because they are replacing bad parts with more bad parts. Most likely there is a defect in the manufacturing process that is yielding a high rate of defects and they haven't figured it out.

[14SLTZ71]

My Sierra (40 - 50 mph shaker) got a new (2015?) rear end installed y-day. SURPRISE! No more shakes, tiny rumble strips, wobbles, NOTHING! Dealer service manager and I were both very doubtful, but GM seemed certain that this would fix, and it did. Will report if anything changes, but for now I am very pleased and satisfied.

Since the GM tech was so certain that this would fix your shake/vibration that tells me that GM is aware and knows how to fix at least one of the 3 different vibration/shake issues.

So that being said, GM should spread the news to all of it's dealership service departments so that anybody with the same symptoms as you had can walk into the service department, tell them their sypmtoms, get them to duplicate and get this rear end ordered.

Edited September 24, 2014 by 15LTZZ71