Shake or Vibration Issues

pm26 · February 11, 2015

Yes, bad tires or incompetent balancing seem to account for a good percentage of these problems. My local Chevy dealer service manager told me the same thing - that it is mostly tire problems, but also differential and drive shaft problems.

I wish we had statistics from GM on those trucks that were successfully repaired under warranty to see what the percentage distribution is. This data would also help people see what are the root causes and possible solutions to these problems.

Edited February 11, 2015 by pm26

f8l vnm · February 11, 2015

I wish we had statistics from GM on those trucks that were successfully repaired under warranty to see what the percentage distribution is. This data would also help people see what are the root causes and possible solutions to these problems.

You my freind, are expecting waaaaaay to much from GM.

DenaliDually · February 12, 2015

I'm told my truck was successfully repaired!

Do I believe it? No. But I do have a glimmer of hope as I sent one of my guys (who isn't as in tune with these things as I am) to pick it up and he said it's good as well as the head service mgr who I've delt with since day one and has drove it with me 4xs.

So now the "explanation"...

So they started where they all start. The tires. Road Force revealed some abnormalities, exact readings I'm unaware of, but adjustments were made. They drove the truck and still detected vibration with the GM vibration detector and their butts. They went to the rear tires and re balanced them on the "NEW" laser balancer and found nothing out. Remounted the wheels, drove it, was worse. The tech simply rotated the rims on the studs 180 degrees and drove it again. NO VIBRATION!

What the hell? So now the theory is the hub centric wheels don't mount perfectly everytime or could be sensitive to even torque during installation. The dealer believes the wheels them selves could be the problem. Being the second set, it could be a manufacturing issue.

Thoughts?

I'll be to it in an hour or so to give it my full assesment.

2015 Denali 3500 DRW, Michelin ltx, 4x4

CounterMeasure · February 12, 2015

As soon as i took those shitty azz tires off my truck its been smooth as can be. Ive got 12k on it and still ridin smooth. The other day i was coming home from BPS and i decided to take the highway to see if my vibration had came back... Nope, smooth all the way to 85. I'm not saying tires will fix everyones trucks, but im sure glad i didnt screw with the dealer on my 2nd go round

$1200 and four Michelin LTX M/S2s later, the truck rides smooth all the way to 85mph (where it is actually legal to do on a tollway in my neck of the woods). Too bad GM doesn't consider doing this on their highly marketed Denali line from the get-go.

In my humble opinion, the GMC dealership I ordered this truck from can go eat a bag of d*cks. I am done with them.

mjj · February 12, 2015

Anyone read thru other forum threads on here and notice a commonality. There always seems to be the off topic comments within those threads about vibrations. For example I was reading a catch can thread where someone happened to mentioned a vibration and wondered if it was from the can mounting then others chime in about their slight pedal vibrations as well but stating they noticed theirs before the can install. So these vibrations, some much more pronounced than others, seem fairly wide spread.

mjj · February 12, 2015

This thread gets a lot of mentions on other sites too: "There are several causes, some get fixed but most don't. There are over 200+ pages on gm-trucks.com on this topic"

DenaliDually · February 12, 2015

MY VIBRATION IS GONE!

All the way to the governor. I am wondering if I'll have this problem every time I need the tires balanced and/or wheels removed. I'm sure there are many reasons why these trucks have problems but I urge you to find a good tire shop.

2015 Denali 3500 DRW, Michelin ltx, 4x4

Edited February 12, 2015 by DenaliDually

DenaliDually · February 12, 2015

$1200 and four Michelin LTX M/S2s later, the truck rides smooth all the way to 85mph (where it is actually legal to do on a tollway in my neck of the woods). Too bad GM doesn't consider doing this on their highly marketed Denali line from the get-go.

In my humble opinion, the GMC dealership I ordered this truck from can go eat a bag of d*cks. I am done with them.

Mine actually came with them...

You will like these tires, sucks you had to fork it over yourself. They'll last 40% longer and give you superior wet weather traction, just wait for the first time someone causes you to slam on the brakes in the rain. Glad your riding smooth! Others are not so lucky to spend 1200 to see a fix...

2015 Denali 3500 DRW, Michelin ltx, 4x4

Edited February 12, 2015 by DenaliDually

Shimmy Bang Bang · February 12, 2015

I wonder how many people have had the body mount service bulletin applied (repositioning and retorquing) on their trucks and whether or not that led to a successful fix.

MarkPGMC · February 12, 2015

its hard to find out anything when GM refuses to work on my truck. I have been told time and time again that it is working as designed. It vibrates as bad as it always has.

findingnewvibratingroads · February 12, 2015

I thank God for my service department. It sucks that they've had my truck almost 4 weeks, but at least they acknowledge that an issue exist. Sorry to hear that Mark.

Edited February 13, 2015 by findingnewvibratingroads

Wrench589 · February 13, 2015

Question - are all the wheels on the 2015's hub centric, including the 1500's and the Tahoe/Suburban/Yukons, or just the 3500 dually's? I've got the issues on the "noise" thread over in the SUV section of this forum and wondering if my Yukon also has hub centric wheels. (Which in theory are supposed to be perfectly entered, as long as the hub bore isn't too large or the hub too small!).

DenaliDually · February 13, 2015

Question - are all the wheels on the 2015's hub centric, including the 1500's and the Tahoe/Suburban/Yukons, or just the 3500 dually's? I've got the issues on the "noise" thread over in the SUV section of this forum and wondering if my Yukon also has hub centric wheels. (Which in theory are supposed to be perfectly entered, as long as the hub bore isn't too large or the hub too small!).

To the best of my knowledge, yes...

I feel like a little kid with a big red button in front of me, I'm dying to take one of these off and see if there is any play in the wheel without lugs but I'm not willing to jeopardize my ride quality. Maybe when it's due for rotation and balance I'll investigate.

I personally am not buying the fact the the hub bores are to large. I feel the most likely scenario is that the tech hangs the wheel on the studs then hits it with the impact to tighten the first lug nut, it's possible if the hub bore is to tight that it causes the assembly to get bound up and not sit flush. Maybe asking them not to use pneumatics on install would eliminate this variable? I don't know... I'm just glad they fixed it and dread the next rotation and balance!

2015 Denali 3500 DRW, Michelin ltx, 4x4

Wrench589 · February 13, 2015

To the best of my knowledge, yes...

I feel like a little kid with a big red button in front of me, I'm dying to take one of these off and see if there is any play in the wheel without lugs but I'm not willing to jeopardize my ride quality. Maybe when it's due for rotation and balance I'll investigate.

I personally am not buying the fact the the hub bores are to large. I feel the most likely scenario is that the tech hangs the wheel on the studs then hits it with the impact to tighten the first lug nut, it's possible if the hub bore is to tight that it causes the assembly to get bound up and not sit flush. Maybe asking them not to use pneumatics on install would eliminate this variable? I don't know... I'm just glad they fixed it and dread the next rotation and balance!

2015 Denali 3500 DRW, Michelin ltx, 4x4

I know I wouldn't mess with mine if it was OK!

I agree there is more chance it's an assembly error, not component defect. Especially if hub-centric is a new thing. Someone didn't communicate properly to the line and next thing you know, it's being done wrong. Wouldn't be the first time something like that happened. And you're right - they have no fricken' business using impact wrenches to put wheels on!

Aaron1085 · February 14, 2015

I'm still having shake at highway speeds (typically 72-83). Tends to taper off at about 85, however still doesn't feel FIRM. I hate this and it ain't the snow because I purposely cleaned my wheels the other day to get all snow and ice out before my recent 2hr road trip.

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