CHEVY SHAKE FIXED!

[pm26]

Damn man... how many times do I have to say it was NOT OUT OF BALANCE....They trued it first and checked balance and it was fine. No other weight was added and I looked to see when i picked it up.

 

RT

Sorry, I did not read your first post carefully enough.

Edited October 29, 2016 by pm26

[MRW412]

It has been a week since I have taken the driveshaft to a driveline specialist and I have not felt any 75+ mph vibrations since. Runout was good, but the rear weight was slightly off so they stripped off all the weights and rebalanced it. I had weird vibrations that would come and go depending on if I was going slightly uphill or slightly downhill. I highly suggest taking the driveshaft to a specialist.

[Bikemobile]

It has been a week since I have taken the driveshaft to a driveline specialist and I have not felt any 75+ mph vibrations since. Runout was good, but the rear weight was slightly off so they stripped off all the weights and rebalanced it. I had weird vibrations that would come and go depending on if I was going slightly uphill or slightly downhill. I highly suggest taking the driveshaft to a specialist.

What did it costvto have it balanced? Where did you have it done?

Edited November 6, 2016 by Bikemobile

[MRW412]

50$ at Texas Driveshafts & PTO. But they said they were closing their business on Nov 3rd. If your looking to get it done in the Tyler/East Texas, there is WC Supply in Tyler and Longview Driveshaft & 4x4

[Bikemobile]

Southeast Colorado.... im thinking Denver or Grand Junction

[bdbake01]

Something doesn't quite make sense here. While I do not, in any way, suggest that a wonky driveshaft can't make a ton of vibration - it CERTAINLY can - something isn't making sense here.

 

You that say that the driveshaft was "perfectly balanced" yet, "out of round"? Ok, that's all fine and dandy. A crankshaft is typically pretty far from "round", yet near perfectly balanced. Yet, they don't usually cause any issue. Balance is balance, doesn't matter how round it is or isn't. (disclaimer, mass and stiffness both begin to play a big roll in that general statement at some point, which may be what is at play here)

 

So, they trued the shaft. That means that they removed the high spots. Removed mass. This changes the balance. This introduces imbalance which is going to shake by pure definition. So as you described the process, it should have made it shake MORE...not less.

 

To be clear, I'm not suggesting that what they did, didn't fix your shake. Your observations are what they are, and clearly they are positive and I don't question that. But for those who want to get to the root cause of this obviously pervasive issue, a little more detail would be most helpful.

[MRW412]

My drive shaft wasn't trued. The runout was checked and it was good. Mine was improper balanced from the factory (or somehow became unbalanced, I bought the truck used) and then taking the weights off and rebalancing it stopped my vibs

[Thomcat]

Once heard, maybe a post in the old Mechanix Illustrated mag, that a quick and dirty way to check driveshaft balance is to place a large radiator hose clamp around the shaft attaching a small fishing weight. Mark the shaft/clamp in segments and run the vehicle a few times each time rotating the clamp/weight to a different position around the shaft. If the shaft is balanced the vibrations should increase evenly at each position, but if it gets better in certain positions, the shaft may have thrown a welded balance weight or been not balance properly at the factory.

[tootall87]

Howe hard is it to remove the DS on these trucks? Standard stuff?

[07Softail]

Easy.... four small I think 12mm bolts at the yoke and then pull out of the transmission tailshaft.

 

RT

[07Softail]

Something doesn't quite make sense here. While I do not, in any way, suggest that a wonky driveshaft can't make a ton of vibration - it CERTAINLY can - something isn't making sense here.

 

You that say that the driveshaft was "perfectly balanced" yet, "out of round"? Ok, that's all fine and dandy. A crankshaft is typically pretty far from "round", yet near perfectly balanced. Yet, they don't usually cause any issue. Balance is balance, doesn't matter how round it is or isn't. (disclaimer, mass and stiffness both begin to play a big roll in that general statement at some point, which may be what is at play here)

 

So, they trued the shaft. That means that they removed the high spots. Removed mass. This changes the balance. This introduces imbalance which is going to shake by pure definition. So as you described the process, it should have made it shake MORE...not less.

 

To be clear, I'm not suggesting that what they did, didn't fix your shake. Your observations are what they are, and clearly they are positive and I don't question that. But for those who want to get to the root cause of this obviously pervasive issue, a little more detail would be most helpful.

No the drive shaft looked like a jump rope when the put it in the machine and spun it.

 

RT

[rhino68]

Anyone try getting their 2 piece driveshaft aligned? I understand the single shaft causing vibration, but the exact same vibration with a 2 piece shaft?

[chevytruckdriver]

On the interstate I keep my speed locked in at 70mph to save gas and to keep the state troopers in check. The other day a friend of mine needed a ride to pick up his vehicle as they were closing soon. I got on the interstate and pushed it up to 80mph. The whole truck was shaking very bad. I slowed down until the shaking stopped. (70mph) I gradually increased speed. When I reached around 76mph the shaking started. My brand new truck had almost 6000 at the time. Being really pissed, I dropped off my friend and went home and got on my computer and googled shaking 2017 chevy silverado. I found this site and saw where many others were having the same problem. I took my truck to my dealer the next day. A technician spoke with me. He stated he new what was wrong. He said the steering gear bushings needed replacing with the updated ones. They gave me a loaner car and went home. I kept thinking how would a steering gear cause the truck to shake that bad. It seemed like the drive shaft would have been bad. A few days later they called and said the truck was ready. I got on the interstate and took it up to 100mph. NO SHAKE!! It was fixed. Not sure if there is a service bulletin out. It was in warranty and didn't cost anything. On my invoice there was a spot called STEERING. Under that it stated "DIAGNOSE, STEERING BUSHINGS ARE NOT THE UPDATED BUSHINGS, REPLACED STEERING GEAR BUSHINGS AS PER SI AND TEST DROVE". It no longer shakes. I hope I have helped someone out. As a side note, when I first got there to drop off the truck, I saw my ASSIGNED REP out smoking. I went out and smoked with him. I started a casual conversation. I asked him if he ever had angry people to deal with. He said once there was a guy that showed up to pick his truck up. The customer started arguing with him. The bill was over $600.00. He said he wasn't going to pay over $300.00. The rep said he reviewed the bill and saw where he made a $50.00 mistake. He fixed that mistake. He then (somehow) juggled the numbers around and got the bill under $300.00. Sounds weird, but this is what he told me and I believe it. We all know about car dealers. Another time, when I took my truck in for its first oil change at 5000 miles, I pulled in and the person that greeted me put some kind of clamps on my tires. I asked my service rep what those were. He stated it would tell them if the truck was in alignment. He then printed off some paperwork and said the front end was out of alignment and was going to cost $139.00. I asked the technician about that. He said there was to be no charge because it was in warranty. After all this BS, I went home. I then started receiving e-mails from the "Customer Experience Manager" wanting me to give the rep all 10's as a score so the rep wouldn't get in trouble. I didn't respond. Then I got e-mails from GM in Detroit wanting to know my "overall experience". I decided I better give her all 10's and recommend my dealer. I'm sure my comments will be stored in the database. Don't want them to sabotage my truck on the next visit. Tied of my rant yet? OK, one final item. The transmission had to be replace just over 4000 miles. The truck looks good. Looks can be deceiving.

[No Coast Rider]

I bought a 2015 Silverado 1500 LS Custom Double Cab in February that had a nasty shake starting around 75MPH. I had the tires balanced but it didn't help. I went to the dealer since it had CPO warranty and they wanted to try a road force balance. When I picked it up the advisor said they got the balance better but the tires just wouldn't balance properly and they recommended new tires. 

 

 

 

The tires were the OEM Goodyear Wranglers. Even after the road force I still had a shake though it wasn't as bad. I ended up getting new tires Firestone Destination LE2, and the shake seems to be gone. 

[GasCan420]

We'll, today is the day I get my 2015 Sierra checked out for the infamous Chevy Shake.

Started small with having the tires checked for out of balance, I was told they couldn't get them balanced any better than what they already are.......check that one off the list. 

Get most of the Shakes at around 35mph, and intermittent after that, like occasionally hitting the rumble strips. Pretty frustrating buying a truck with only 6,300 miles on it and it needs work, I really wish it would have vibrated during our test drive. 

I'm hoping I can take the information on this forum and relay it to the mechanic today, sounds to me like he/she might find it useful.

Wish me Luck!!!