Shake or Vibration Issues

[pm26]

Body / engine mounts is the culprit. They won't redesign due to having to redo crash test results and ratings. They simply "wing it" truck after truck.

 

 

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If that's the case, why don't all trucks vibrate the same? Only some percentage of trucks sold have the vibration problem, proving that instead of design issue, there is a batch of defective parts that were installed on these trucks, be it tires, hubs, axles, or transmissions.

[Tattooo]

If that's the case, why don't all trucks vibrate the same? Only some percentage of trucks sold have the vibration problem, proving that instead of design issue, there is a batch of defective parts that were installed on these trucks, be it tires, hubs, axles, or transmissions.

I agree

[mikegmi2]

If that's the case, why don't all trucks vibrate the same? Only some percentage of trucks sold have the vibration problem, proving that instead of design issue, there is a batch of defective parts that were installed on these trucks, be it tires, hubs, axles, or transmissions.

 

I can't call anyone a liar...all I can do is speak from experience.

 

I have driven exactly 14 Silverado/Sierra trucks (MY 14-15).

 

Every single one vibrated.

 

They all vibrate differently because these aren't cookie cutter clones of one another. There are allowable tolerances on every single part. Every truck...even 2 that are the exact same (same color, options, everything), are a little different.

 

There are design issues, as well as bad batches of parts. That's why it's difficult for a lot of service departments to diagnose the problems. Also, due to design issues, some problems are impossible to correct. That's why GM is giving up and MSRP trading these things without a fight!

 

Fill out a BBB case online...wait...talk to GM reps on the phone...wait...set an arbitration date...wait...1-2 days before your case you will get a call from GM and they will give up and give you what you ask for.

 

Do not settle for anything less! They will offer you 2-3 crappy deals. Do not give in...go the distance and watch and see what happens. They know they screwed up...and they will not waste their time/money on going to arbitration knowing they will lose.

 

You don't see more posts like this because most people, after settling and getting what they want, do not come back here and explain the outcome...hundreds are doing this. You should do the same if you have this problem.

[CCDenali]

Update:

 

Starting to get the runaround from the dealership now

 

Received a call last night from the main service manager (whom I have not dealt with yet) indicating this is normal...When asked what tests were done to confirm this and targeted questions as to how he came to this conclusion he was clueless as to what is actually going on with my truck. He wasn't even aware of the "work" they had already done (roadforce balancing). I should of asked him the color of my truck as I bet he would of got that answer wrong as well. Sounds like standard evasive dealership maneuvers if you ask me.

 

Received a call again today from the service manager I had been working with who started out with the same this is normal BS. Come to find out they haven't even placed it in a bay to examine this further. I asked why the mechanic would tell me this was not normal and then the vehicle wasn't even looked at since that point and how they are able to come to this conclusion without concrete evidence or testing other than the biased head service manager's opinion who doesn't want to deal with this problem.

 

At any rate they are going to run the tests. I requested they do roadforce on all tires, measure rim runouts, use the picoscope to measure vibrations and provide me with all of this data so that we can compare against what is "acceptable" amount of vibration for GM.

 

I hate going through this and playing this game but at least i'm prepared. I guess the best advice is to just stick to your guns and be persistent and polite while documenting well. It is legal in my state to record phone calls with 1 party (myself) consent so I have begun doing that as well. I will not shame this dealership or staff yet because I believe in giving people the opportunity to first do what is right or the chance to earn my future business but depending on if they continue to handle this poorly I will be sure to make you aware of what location this is. I may have to take it to another dealership here soon... I just want my truck working the way it should and its sad there are all these hurdles in place the keep that from happening. In my business you would be out of business for handling customers this way.

[pm26]

It seems inconceivable to me that if a vibrating truck was fully instrumented and put under load on a dynamometer, that GM could not figure out what the root cause of vibration is in each case and eliminate it by replacing the defective part or assembly. It seems that they really do not want to find out because, as it was pointed out several times already, it would cost too much to properly fix these trucks.

Edited November 18, 2015 by pm26

[ikaika1984]

It seems inconceivable to me that if a vibrating truck was fully instrumented and put under load on a dynamometer, that GM could not figure out what the root cause of vibration is in each case and eliminate it by replacing the defective part or assembly. It seems that they really do not want to find out because, as it was pointed out several times already, it would cost too much to properly fix these trucks.

Buy American right?

 

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[Jesse Davidson]

lol^^^

[calvic]

Buy American right?

 

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Well I understand the frustration. I wonder how many of us don't have the vib. issue? My 2015 2500 Sierra with an 8 ft. bed and Duramax runs perfectly and smooth as glass. Coming from a 92 Dodge Cummins this is a perfect truck for me.

 

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[abominable z71]

I know this is from the previous generation of trucks but it is still extremely interesting

 

http://www.silveradosierra.com/suspension/hydraulic-body-mounts-t50705.html

 

All the new crews and double cabs have the hydraulic mount, It is the rear cab mount that is oval shaped.

[dynomutt]

Well after a couple months lookin in and wishing someone would find the magic cure I guess it's my turn to join in. I feel like going to a meeting and saying "I own a Sierra and yes I have a shake." I special ordered my 2015 SLT crew cab 4x4 with the max tow package. Before I start let me say I also purchased the almost exact same truck a month earlier. The only difference beside the color is it does not have the max tow package. I still have this truck and it does not have a vibration. The max tow truck had 4 miles on it when I got it. It had a vibration during the test drive, I figured it was a tire issue and would work out after a few miles. Talking with my salesman he suggested putting about 2000 miles on it before a tire claim. Looks like a warranty claim before then comes out of GM's money. I agreed, after all my other truck doesn't have a problem, why should this one. Well to shorten the story they went thru 17 tires to find 4 that would road force balance in the 6-7 range. Thumbs up for those great SR-A tires. That was a total of 7 trips to the dealer, requiring me to leave it overnight on 2 occasions. They ended up skinning 2 wheels, which they had to replace. After the tires were in range I still had a shake. Next, according to the pico scope, it is time to replace the ring and pinion, after a re-shim does not work. Truck in the shop 2 weeks before they could find a new set of gears. After the gear swap the tech working on it says it didn't change it at all. Truck still in the shop, 3 weeks and counting. They are still trying to find the problem. Truck now has 4900 miles. I told them I would give them until Friday before I started the BBB process. Really hope they can fix it, after all I special ordered it wanted it. If I have to replace it that means another 8 weeks for a special order, and it will not be another GM product.

Edited November 19, 2015 by dynomutt

[pm26]

Well after a couple months lookin in and wishing someone would find the magic cure I guess it's my turn to join in. I feel like going to a meeting and saying "I own a Sierra and yes I have a shake." I special ordered my 2015 SLT crew cab 4x4 with the max shake package. Before I start let me say I also purchased the almost exact same truck a month earlier. The only difference beside the color is it does not have the max tow package. I still have this truck and it does not have a vibration. The max tow truck had 4 miles on it when I got it. It had a vibration during the test drive, I figured it was a tire issue and would work out after a few miles. Talking with my salesman he suggested putting about 2000 miles on it before a tire claim. Looks like a warranty claim before then comes out of GM's money. I agreed, after all my other truck doesn't have a problem, why should this one. Well to shorten the story they went thru 17 tires to find 4 that would road force balance in the 6-7 range. Thumbs up for those great SR-A tires. That was a total of 7 trips to the dealer, requiring me to leave it overnight on 2 occasions. They ended up skinning 2 wheels, which they had to replace. After the tires were in range I still had a shake. Next, according to the pico scope, it is time to replace the ring and pinion, after a re-shim does not work. Truck in the shop 2 weeks before they could find a new set of gears. After the gear swap the tech working on it says it didn't change it at all. Truck still in the shop, 3 weeks and counting. They are still trying to find the problem. Truck now has 4900 miles. I told them I would give them until Friday before I started the BBB process. Really hope they can fix it, after all I special ordered it wanted it. If I have to replace it that means another 8 weeks for a special order, and it will not be another GM product.

Wouldn't this be more descriptive?

[dynomutt]

You could be right, I payed extra for that package, some people got the same option for free. I think I have been cheated.

[dave07]

As an engineer I'm thinking that multiple systems can cause this vibration. GM can't really say that this particular part is causing the vibration because it could just be one component or many.

 

Also, the problem probably only affects a small percentage of trucks which wouldn't warrant a recall. Furthermore, they probably have an ultimate solution to fix the vibration but it costs a lot of money to install or fix. Thus they try cheaper fixes such as replacing tires, balancing drive shafts, rack and pinion gears, etc. because one of these fixes might alleviate the vibration. With all these thing put together (small percentage of trucks with a vibration, high cost of ultimate fix, low cost of possible fixes) GM went the cheap route as any company would with throwing parts at it. Just my $.02.

 

 

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[southern_sierra]

I have noticed that with a full tank of gas I have a vibration that starts at about 77mph and is worst at about 82. On the same smooth road with a 1/2 tank of gas no vibration. I carry about 250 lbs of tools all the time. The vibration feels like its coming from the rear. I have Michelin m/s2 P275/55/20 that were put on at about 1050 miles because of the flat spotted goodyears. I have 9200 miles on it now. I don't drive much over 65 because of were I live so I don't every feel any vibration. Went a 300 mile around trip a few weeks back and the speed limit was 70 so I hit 80 a good bit and the vibs were there. So did some testing this week and found the vib with full tank vs no vib at half tank same road. Anyone else notice this.

[Jesse Davidson]

I have noticed that with a full tank of gas I have a vibration that starts at about 77mph and is worst at about 82. On the same smooth road with a 1/2 tank of gas no vibration. I carry about 250 lbs of tools all the time. The vibration feels like its coming from the rear. I have Michelin m/s2 P275/55/20 that were put on at about 1050 miles because of the flat spotted goodyears. I have 9200 miles on it now. I don't drive much over 65 because of were I live so I don't every feel any vibration. Went a 300 mile around trip a few weeks back and the speed limit was 70 so I hit 80 a good bit and the vibs were there. So did some testing this week and found the vib with full tank vs no vib at half tank same road. Anyone else notice this.

I have noticed that the vibe is different with the changing of weight in the truck. Additionally, I was in traffic and doing a long stretch of between roughly 17-27 mph the vibe was just like the vibe I get at 76

(link to my 76 mph vibe here) the truck feels like its shaking side to side, and as though the transmission is clunky, kind of like the truck doesn't know what gear it wants to be in. This is the first time I've noticed it like this, but I'm also rarely driving at a constant 21 MPH. So basically I have different vibes at different speeds, has anyone noticed this vibe though?

 

Now to update on the lawyer, I spoke with the attorney yesterday, he is still combing through all of the information I sent him last week, but I got the impression that he felt it was a very good case and that we have a lot in our favor. No word for sure yet though, I'll keep everyone updated on that.