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Posted

My new 2014 GMC Sierra Z71 also had a vibration at about 35-45 and 68-75. After numerous wheel balancing, re-indexing, front axle replacements, both drive shaft replacements, the dealer finally inspected the ring/pinon gears in the rear differential and discovered the teeth were not the same length (varied from .003 to .085). The dealer replaced the rear differential and this seemed to solve the problem, although not sure. I have the p/u in storage while we travel in our motorhome.

 

Posted

so i really don't want to read 267 pages. are there any 2015s with this problem or are they all 2014s? mine never had an issue. have almost 12k miles on it. i am about to order a 15 and really don't want to be sorry i did.

Cross your fingers or knock on wood and hopefully you won't get one that vibrates. Yes, some 2015's have this issue as well.

Posted (edited)

so i really don't want to read 267 pages. are there any 2015s with this problem or are they all 2014s? mine never had an issue. have almost 12k miles on it. i am about to order a 15 and really don't want to be sorry i did.

 

wait for the 2017's, its not worth the gamble at one in 5 of the 2015's having the vibration issues.

 

at the very least you should wait until the 2016's have been out for 6-8 months and if you don't hear about any issues it might be safe to gamble.

 

myself I wouldn't suggest you buy one until 2017 so the new redesigned 2016's will have had a full year to find and solve and problems they have or at least you will be aware of what problems they have.

 

if you absolutely need a new truck now, then look to another brand is the only smart move.

 

buy a GM truck today and the odds are better that you will get screwed over with a lemon then get very lucky and find one of the few good ones.

Edited by keakar
Posted

so i really don't want to read 267 pages. are there any 2015s with this problem or are they all 2014s? mine never had an issue. have almost 12k miles on it. i am about to order a 15 and really don't want to be sorry i did.

I hate sound like Im drinking the Kool-Aid here, Iv owned all the brands and have been lucky enough to have had very few problems. As far as waiting for this or that if your ready to buy do it. As far as my 14 GMC at 12K miles has been the best Ive ever owned. I guess you could get a bad one, that's with any brand the odds are in your favor that that wouldn't happen with any brand.
Posted

so i really don't want to read 267 pages. are there any 2015s with this problem or are they all 2014s? mine never had an issue. have almost 12k miles on it. i am about to order a 15 and really don't want to be sorry i did.

15's have it too. Make sure u test drive it before signing the dotted line
Posted (edited)

My new 2014 GMC Sierra Z71 also had a vibration at about 35-45 and 68-75. After numerous wheel balancing, re-indexing, front axle replacements, both drive shaft replacements, the dealer finally inspected the ring/pinon gears in the rear differential and discovered the teeth were not the same length (varied from .003 to .085). The dealer replaced the rear differential and this seemed to solve the problem, although not sure. I have the p/u in storage while we travel in our motorhome.

 

If this is true and you people still ignore this and buy new GM trucks anyway, you deserve what you get.

Edited by pm26
Posted (edited)

I was thinking of bringing mine in to "fix the shake", but enough people here seem to have tried, so if theirs weren't fixed, what in the hell would I get out of even attempting to go to my dealership? I also have an aftermarket Borla exhaust on mine and I can see that they would probably use that as an excuse as to why the vehicle is shaking....no thanks. I just do NOT have the time for back and forth dealership trips....SUCKS man!

I had a 2014 Silverado before I had this shaking 14 Sierra. New off the lot, the Silverado shook bad. They told me it had been sitting on the lot too long and tires were probably flat spotted. After a couple hundred miles, I brought it back. One of the rear wheels had TWENTY OUNCES OF WEIGHTS ON IT!. ON A BRAND NEW TRUCK! Way to go Chevrolet! I'm not kidding. They showed me. They replaced two tires. The truck rode perfectly after that.

 

I wanted the Sierra to have additional bells and whistles. I've owned NEW 99, 02, 03, 05, 07 and 14 Silverado's. Also had a new 11 F150. No problems with any of them. This is my first GMC. I thought surely "professional grade" will ride nicer than the Silverado. I feel kind of like the village idiot. Learned a lesson here the hard way. Wish I still had the 14 Silverado.

Edited by Bob2007
Posted

I had a 2014 Silverado before I had this shaking 14 Sierra. New off the lot, the Silverado shook bad. They told me it had been sitting on the lot too long and tires were probably flat spotted. After a couple hundred miles, I brought it back. One of the rear wheels had TWENTY OUNCES OF WEIGHTS ON IT!. ON A BRAND NEW TRUCK! Way to go Chevrolet! I'm not kidding. They showed me. They replaced two tires. The truck rode perfectly after that.

 

I wanted the Sierra to have additional bells and whistles. I've owned NEW 99, 02, 03, 05, 07 and 14 Silverado's. Also had a new 11 F150. No problems with any of them. This is my first GMC. I thought surely "professional grade" will ride nicer than the Silverado. I feel kind of like the village idiot. Learned a lesson here the hard way. Wish I still had the 14 Silverado.

The maximum practical limit on balancing weights is about 3 ounces per wheel side, even on larger 20 or 22 inch wheels. If the wheel requires more than that to balance, chances are high that the tire is junk. 20 ounces is beyond ridiculous. Stick on weights come in strips of 1/4 ounce or 1/2 ounce weights. For 20 ounces, the weight strip of 1/4 ounce weights would have to be about 2 ft long! The fact that this vehicle came this way from the factory tells me beyond any doubt that there is nothing even remotely resembling quality control in that plant. The workers are just told to slap every part on and shut up.

Posted

I can't even imagine the issues GM customers are going to have when the new 8 speed transmission hits the market.

My buddy is a GM tech, and that's exactly what he said.
Posted (edited)

I had a 2014 Silverado before I had this shaking 14 Sierra. New off the lot, the Silverado shook bad. They told me it had been sitting on the lot too long and tires were probably flat spotted. After a couple hundred miles, I brought it back. One of the rear wheels had TWENTY OUNCES OF WEIGHTS ON IT!. ON A BRAND NEW TRUCK! Way to go Chevrolet! I'm not kidding. They showed me. They replaced two tires. The truck rode perfectly after that.

 

I wanted the Sierra to have additional bells and whistles. I've owned NEW 99, 02, 03, 05, 07 and 14 Silverado's. Also had a new 11 F150. No problems with any of them. This is my first GMC. I thought surely "professional grade" will ride nicer than the Silverado. I feel kind of like the village idiot. Learned a lesson here the hard way. Wish I still had the 14 Silverado.

So you had a bad tire got it fix under warranty, rides perfect now, and you feel like an idiot. I hate to break this to you, people now days work for the money, not for pride. That's goes for all professions. If it didn't get fixed then I would feel like an idiot.

Edited by KARNUT
Posted (edited)

So you had a bad tire got it fix under warranty, rides perfect now, and you feel like an idiot. I hate to break this to you, people now days work for the money, not for pride. That's goes for all professions. If it didn't get fixed then I would feel like an idiot.

Read his post again. He traded in the fixed truck on a new 2014 GMC Sierra which apparently has bad vibration problems which are not so easy to fix.

Edited by pm26
Posted

Read his post again. He traded in the fixed truck on a new 2014 GMC Sierra which apparently has bad vibration problems which are not so easy to fix.

Your right, he mention shaking Sierra. Even thou I have a good one and I trade about every two years, reading some of these problems, I think Ill keep this one awhile and not trade it just because I want to. Unless I start to have problems. I feel for these people, some people claim they all have problems which is silly.

  • Like 1
Posted (edited)

I hate sound like Im drinking the Kool-Aid here, Iv owned all the brands and have been lucky enough to have had very few problems. As far as waiting for this or that if your ready to buy do it. As far as my 14 GMC at 12K miles has been the best Ive ever owned. I guess you could get a bad one, that's with any brand the odds are in your favor that that wouldn't happen with any brand.

telling people to go ahead and buy GM made trucks now is like telling someone to go bobbing for apples in a toilet and hope they find the one apple that's in there

Edited by keakar
Posted (edited)

 

I had a similar thought, had a truck with the same issue and they balanced the driveshaft which took care of the problem. OP, I noticed the same thing with the Z71 package, which is why I bought a 1LT.

Ditto. It seems that everyone wants to proclaim to the world that they have a "Z71" with heavy duty this and that. Well, along with it comes stiffer ride, more road vibration, etc. I too opted for the LT, great ride and I can still tow up to 9600 lbs.

* Oh, and BTW, GM might want to concentrate on how these vehicles are tied down during transport. Dodge/Chrysler had the same problem 20 yrs ago on their Minivans and after a lot of angst, it was a little reported secret that the delivery drivers were torquing down on the wheels and driveshaft spindles during transport. Also, the other day I noticed a truck load of new Chevy trucks being delivered and noticed that they have solid black metal wheels on them, not the ones they will be sold with.

 

Edited by 13_Silverado

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