Shake or Vibration Issues

[yojo]

I haven't posted on this for a while..My 14 sierra reg cab 4.3 2wd 61,000 miles 17" wheels. Still has the shakes, GM did give me a credit (1000.00) to purchase Michelins thru a dealer. what got me back on this is yesterday I worked on a friends truck..1994 chevy work truck  327,000 miles with original ball joints and my truck wasn't that nice riding when it had 17 miles on it, according to my dealer its the flatspots from sitting on the lot...(sat for about 2 weeks before I bought it). And my 02 Silverado that had 174,000 when I traded it in was like driving a Cadillac compared to this one. Oh well thanks for listening

to me vent..Its been awhile!

 

Edited July 18, 2018 by yojo

[pm26]

6 hours ago, Leevon said:

Bought a '17 Sierra regular cab in December...came equipped with factory highway shake (bad).  

Was that "factory highway shake" standard equipment or an option?

[Leevon]

9 hours ago, pm26 said:

Was that "factory highway shake" standard equipment or an option?

Apparently it's a "surprise" option, installed randomly.  I wasn't even aware of the option before I bought the truck, figured it out on the long drive home.  

[wmadden]

Okay, so we're 797 pages into this thread and GM obviously isn't going to do anything to fix the problem... I have two vehicles, '17 Denali crew cab and a '16 Denali Yukon XL both with the shimmy/studder.  How many of you are planning to trade in for a '19 with the new design, or are you done with GM and going another brand?... and if so, what are you looking to move to?

[contenderv07]

looks like I'm part of this "club" too... I've got 1k miles on it and about 68-73 mph I get a little bit of a wobble. Steering wheel is a little off center so I'm hoping its just that

[calvic]

I wonder if this symptom is unique to short bed trucks.  My 2015  GMC  2500  4 x 4 with Duramax

Diesel long bed truck with 25k miles is smooth as glass. No vibes,  best truck I’ve ever owned and I’ve owned all three brands.

[Willyone]

On ‎7‎/‎17‎/‎2018 at 8:07 PM, yojo said:

I haven't posted on this for a while..My 14 sierra reg cab 4.3 2wd 61,000 miles 17" wheels. Still has the shakes, GM did give me a credit (1000.00) to purchase Michelins thru a dealer. what got me back on this is yesterday I worked on a friends truck..1994 chevy work truck  327,000 miles with original ball joints and my truck wasn't that nice riding when it had 17 miles on it, according to my dealer its the flatspots from sitting on the lot...(sat for about 2 weeks before I bought it). And my 02 Silverado that had 174,000 when I traded it in was like driving a Cadillac compared to this one. Oh well thanks for listening

to me vent..Its been awhile!

 

Same here. My '07 Sierra before buying my current '16 Chebby shaker was a great riding and driving truck, but turning into a rust bucket.  I feel violated #metoo LOL.  Not funny at all but wtf, GM isn't stepping up... 

[Willyone]

19 hours ago, wmadden said:

Okay, so we're 797 pages into this thread and GM obviously isn't going to do anything to fix the problem... I have two vehicles, '17 Denali crew cab and a '16 Denali Yukon XL both with the shimmy/studder.  How many of you are planning to trade in for a '19 with the new design, or are you done with GM and going another brand?... and if so, what are you looking to move to?

No way in hell I'll go for a '19.  That said, when the time comes to replace my '16 shaker I'll do in depth research before buying, which I did not do before buying my '16. 90% of the trucks I've had in the past 40 or so years have been GMs.  All but my current '16 were either trouble free or fixable.  Yeah I know, every brand has its issues and prolly every manufacturer might or will try and wiggle out of a warranty fix.  But GM has basically said flat out go fark yourself.

[Sierra Dan]

20 hours ago, wmadden said:

Okay, so we're 797 pages into this thread and GM obviously isn't going to do anything to fix the problem... I have two vehicles, '17 Denali crew cab and a '16 Denali Yukon XL both with the shimmy/studder.  How many of you are planning to trade in for a '19 with the new design, or are you done with GM and going another brand?... and if so, what are you looking to move to?

For those planning on purchasing a 2019 T1  GMC or Chevy,  Make sure you get it up to about 100 on the highway during the test drive.

Then maybe the decision of staying loyal or jumping ship to another brand will be easier to make. Although I hear this happens with Ford and Ram as well. Not sure about Toyota or Nissan.

I have a slight shimmy/shake only between about 70-80mph and I only see it when I look over at the passenger seat moving if empty. No steering wheel or console shaking.

Nothing like some report here or videos I have seen.

Never did I get above about 65 on my test drive.

 

[wmadden]

On our '16 Yukon XL Denali (60k miles), we noticed the shimmy at 80 mph when cruising down the interstate.  Started first with checking the rims and sure enough, all 22" rims had some sort of out of round condition.  The dealer had a matching set of 22s in stock with factory wheels that we had to purchase for $3000 and that fixed it.  Then came the drivetrain shudder at 1200-1500 rpm when at speed (50-60mph and coasting in 8th gear with AFM engaged) and the engine AFM is switching from 4 cyliinder to 8.  Both my Yukon and Sierra have this studder, which feels exactly like a slipping torque converter.  I've taken my Sierra (17,000 miles) to the dealer 5 times since 14,000 miles now.  They replaced the engine mounts, fixed a broken valve spring (wtf), flushed the tranny, replaced the torque converter, and reprogrammed the ECM to learn mode.  Both vehicles have the 6.2L with the 8 speed tranny.  I've driven them in manual to override the AFM and it doesn't seem to help.  It seems there are multiple issues, both electronic and powertrain-wise going on and I'm not confident they'll get it fixed.  There's a lot of ideas within this thread in how to fix with aftermarket parts, but it seems there are varying differences in what exactly each vehicles studder/shimmy/shake is.  I've been a die hard GM owner due to their reliability and I just think the quest for getting too cute in winning the mileage game with competitors has made the future of GM trucks an unreliable risk I'm not sure I'm willing to take, especially at the price tags we're paying for these vehicles.  I wish I had just kept my '06 Duramax and drove it into the ground.  

[th3r00st3r]

So is this bulliten NOT the fix? https://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=198437

Would like to know before I schedule a service. 

 on my 2016 Silverado LT Crew
Thannks!

[wmadden]

57 minutes ago, th3r00st3r said:

So is this bulliten NOT the fix? https://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=198437

Would like to know before I schedule a service. 

 on my 2016 Silverado LT Crew
Thannks!

Didn't work for either of my vehicles. In fact, on my Sierra, they flushed the tranny and it was worse after I left the dealer even though they reported to me that it was fixed. 

[Pinnacle]

On 2018-07-18 at 7:56 AM, Leevon said:

Apparently it's a "surprise" option, installed randomly.  I wasn't even aware of the option before I bought the truck, figured it out on the long drive home.  

you have it on your 18 with zero miles on it?

 

[Roscopcoletrain]

So is this a constant always at the same speed shake/vibration or does it come and go for people? 

[contenderv07]

3 hours ago, Roscopcoletrain said:

So is this a constant always at the same speed shake/vibration or does it come and go for people? 

mine doesn't start until it hits 70 mph, then until about 76 it starts to die down, but like someone else said, this shouldn't be happening to a 45k + vehicle, especially for how long they've known about it. I've got a 2018 with 1000 miles on it BTW