Jump to content

Shake or Vibration Issues

Silver space ship
 Share

Recommended Posts

fishrman Enthusiast

fishrman

Posted
Posted
57 minutes ago, BigTex4x4 said:

Mine did the same thing a couple weeks ago on my 17 Sierra cc 5.3 z71 4x4. Dropped it off at the mechanic and my transmission was completely shot, not even rebuildable. The problem started at the torque converter. Did a lot of research and turns out there’s a class action lawsuit against gm on these transmissions. $4,300 out of my own pocket. I’m pissed to say the least 

Was that the 8 speed or 6?

 

  • Replies 12.9k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

csckickass
csckickass

Well folks, I did it. After all the failed attempts at the Chevy dealer I traded it in for a 2015 Ram 1500 Larame. I have to agree with the other folks on here that have done the same thing, it was th

mafd2
mafd2

Apparently you and the other customer reps don't care. If you or GM would care y'all would put more effort in the matter. Just coming on the forum and stating the same repetitive posts and being a 3

DALaws
DALaws

Well I have some good news and bad news about my truck vibrations. Good news is that my truck has a significantly less vibration at speed. The bad news is my truck has significantly less vibration. Fo

Posted Images

fishrman Enthusiast

fishrman

Posted
Posted
17 minutes ago, BigTex4x4 said:

It was the 6 speed

Interesting since that is the same as mine and they say there is no service bulletins for the 6 speed and I think the law suit is just for the 8 speed. I am still talking with GM about mine and have an open case on it. So far, I have had a hard time getting them to try to put Mobil 1 in as that seems to help those who have the 8 speed.

 

BigTex4x4 New Member

BigTex4x4

Posted
Posted

I had read the threads to flush the trans fluid and use Mobil 1 and if that didn’t work to replace the torque converter, I told my mechanic (I didn’t realize that the class action suit was for the 8 speeds) that GM had made those recommendations. He said when he took the pan off of the transmission it was completely full of metal shavings and beyond repair. Truck has 75,000 so no longer has a warranty. 

Snoringbear Enthusiast

Snoringbear

Posted
Posted
15 hours ago, BigTex4x4 said:

Mine did the same thing a couple weeks ago on my 17 Sierra cc 5.3 z71 4x4. Dropped it off at the mechanic and my transmission was completely shot, not even rebuildable. The problem started at the torque converter. Did a lot of research and turns out there’s a class action lawsuit against gm on these transmissions. $4,300 out of my own pocket. I’m pissed to say the least 

Where did you get your information that there’s a class action lawsuit on the transmission?  If you could share your source it would be greatly appreciated by me and probably many others.  Thanks.

BigTex4x4 New Member

BigTex4x4

Posted
Posted

If you google class action lawsuit filed against GM for bad transmissions it pops up multiple articles. The suit was filed September 30 2019 by Cohen Milstein for the 8L90 and 8L45 transmissions. My transmission is a 6 speed but still did the exact same thing that the lawsuit claims the 8 speeds do. There were multiple people trying to get GM to do a recall but they didn’t 

fishrman Enthusiast

fishrman

Posted
Posted
21 hours ago, BigTex4x4 said:

I had read the threads to flush the trans fluid and use Mobil 1 and if that didn’t work to replace the torque converter, I told my mechanic (I didn’t realize that the class action suit was for the 8 speeds) that GM had made those recommendations. He said when he took the pan off of the transmission it was completely full of metal shavings and beyond repair. Truck has 75,000 so no longer has a warranty. 

Sad!! Lady with GM told me to take it to the shop again but to call her before I take it in. Hoping they plan on changing the fluid out for me even though it is the 6 speed and not the 8 as I think it has the same issue as the 8.

Snoringbear Enthusiast

Snoringbear

Posted
Posted
17 hours ago, fishrman said:

Sad!! Lady with GM told me to take it to the shop again but to call her before I take it in. Hoping they plan on changing the fluid out for me even though it is the 6 speed and not the 8 as I think it has the same issue as the 8.

I had the TSB performed on my 2015 eight speed tranny with the prescribed Mobile 1Blue Stripe tranny fluid, three flushes, drive, reprogram, etc.  worked ok for awhile but gradually started making those low speed/gears hard shifts again.  But, problem wasn’t as bad as originally I must say.  However, I now do a little trick that I got off this thread awhile back, which is;  Every few days When I make my first drive of the day I start off in Manual mode and run the tranny through the gears up and down, usually 1st, 2nd, 3rd.  I have to go through three or four stop signs to get to the highway.  Anyway, tranny will make low speed shifts smoothly for a few days.  Personally, I think the low speed hard shift problem could probably be handled by reprogramming the tranny to start off in 2nd gear unless in Tow Mode.  Some high end sports cars have programmed their trannys to take off in 2nd gear unless in Sport Mode.  
Btw, did some research on a comment upstream that there’s a class action suit underway.  From what I’ve read it’s a dead issue. Ain’t nothing gonna happen. ?...

 

flyingfool Senior Enthusiast

flyingfool

Posted
Posted (edited)

did you do a bench test on the TECH-M? make sure there are no leaks and all check valves are holding,  I would leave it in Manual 4-5th also play with tow haul to increase line pressure to clutches

definatly needs proper trans professional to diagnose

 

there are two model torque converters, one is a dud, and the other one is semi reliable. you can also try a converter from the 6 speed ZL1 camaro, its built better and has  around 2300-2500 stall

Edited by flyingfool
  • 3 weeks later...
BDB001 New Member

BDB001

Posted
Posted

Hi, It's my first time on any forum and I'm sure it's been said before but my truck is a lemon!! I own a 2018 gmc sierra 1500 elevation edition with a 4.3l and six speed trans. I've had every vibration has most of you, from the vibration when it falls on 4cyl in every situation, worst when running at approx 50 to 70kmh. I have the vibration when running more than 60 kmh and worst as a get to 100 kmh, sometimes it gets so bad I have drop under 100kmh. I also have a bad vibration under my feet and gas pedal when I'm at 2000rpm, so there's always a vibration present. I brought it at the dealer at least 3-4 times but the service manager says every time that the problem wasn't present when the tech tried it out. Once I tried it out with the tech and he told me they knew there was a problem but gm tells them not tempt any repairs, then that same service manager tells me it's normal. I even told the sales manager that I'd like to trade it in even if I loose money, even the dealer doesn't want it cause she told me she'd take pictures and try a wholesaler. so I got screwed when I bought it and I'll get screwed when I change it. It feels good just saying it, thanks for that... 

Bikemobile Enthusiast

Bikemobile

Posted
Posted
15 hours ago, BDB001 said:

Hi, It's my first time on any forum and I'm sure it's been said before but my truck is a lemon!! I own a 2018 gmc sierra 1500 elevation edition with a 4.3l and six speed trans. I've had every vibration has most of you, from the vibration when it falls on 4cyl in every situation, worst when running at approx 50 to 70kmh. I have the vibration when running more than 60 kmh and worst as a get to 100 kmh, sometimes it gets so bad I have drop under 100kmh. I also have a bad vibration under my feet and gas pedal when I'm at 2000rpm, so there's always a vibration present. I brought it at the dealer at least 3-4 times but the service manager says every time that the problem wasn't present when the tech tried it out. Once I tried it out with the tech and he told me they knew there was a problem but gm tells them not tempt any repairs, then that same service manager tells me it's normal. I even told the sales manager that I'd like to trade it in even if I loose money, even the dealer doesn't want it cause she told me she'd take pictures and try a wholesaler. so I got screwed when I bought it and I'll get screwed when I change it. It feels good just saying it, thanks for that... 

A comprehensive tire balance ( actually make them move the tires on the rims to get the lowest weight possible) and a tune deleting the AFM has made my truck 1000 times better. Its worth a try if you have to keep it. 

  • 4 weeks later...
FredB New Member

FredB

Posted
Posted

My 2018 Chevy Colorado has the Chevy Shack. I called GM and was told there are no recalls but if I took it to a GM dealer the transmission was still under warranty.

Mattfi1 New Member

Mattfi1

Posted
Posted

I have a 2018 Chevy 2500 Express Van with a Explorer conversion and I am having a severe right front end vibration after I hit a bump or pothole.  It has happen at 65 mph and again at 45 mph.  The dealer has said it was the transmission and he changed the fluid and filter.  Well 200 miles later I had it again.  Not sure what to do but I'm contacting the dealer again and see what they say this time.  [email protected]

Drew71 New Member

Drew71

Posted
Posted
On 8/5/2013 at 11:48 PM, Stex said:

 

I have had wheel balance trouble that came and went on different roads. If it rides smooth on smooth roads and seems out of it on not so smooth roads it could be balance. Rough on smooth roads with passenger seat shaking is rear balance or drive shaft,

 

Did the dealer check to see if tires out of round? Even discount tire has replace a Michelin for me that my independent on the truck balance shop said was to far out to even true. Discount agreed. Just hunting here. Hope solved soon.

I had the same issue. Balanced rear shaft helped a ton. Can't tell if it took it all as I have worked rotors to replace too. But definitely made a drastic improvement.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • C/K Man
      Silverado 4500-5500-6500 are they still being produced? Would have sold better as GMCs as well

      By C/K Man · Posted

      There was talk over the last couple of years that the contract to build these trucks between GM and International would not be renewed.  International moved production of all their other trucks besides the companion CV model out of the Springfield plant some time ago when they opened their San Antonio plant.  That left Springfield only building the Silverado Medium Duty, International CV Series, and some Express/Savanna long wheelbase cutaways.  International also put the plant up for sale some time ago.  This all answered my earlier question as to why GM and International did nothing with these trucks since they were introduced, as they had basically become a market 'placeholder' with a finite life.    The Silverado Medium Duty/International CV trucks were interesting combination of a GM powertrain, electrical system, and K2XX Silverado cab with an International chassis that was supposedly designed for a step-van type vehicle they never produced.  They were manufactured in International's Springfield plant along with the IH MV series initially.  When first introduced, there was much talk that the Silverado Medium Duty/CV would eventually get a gasoline engine option along with other upgrades and GM and IH would work on a class 6/7 joint venture truck.  This was before VW bought Navistar out, after that happened no more was said.  Draw your own conclusions...   About the time talk started that the GM/IH joint venture was not going to be renewed, rumors started that GM would develop a new line of medium duty trucks themselves.  The story is the new trucks will be part of the next generation HD's due in 2028, and will still feature a 'straight rail' chassis design that the current medium duty has.  GM views this as a desirable feature that differentiates their truck from the competition.  A gasoline engine option is also expected.  As the current Silverado Medium Duty remains in production until September 2026 and there is still a lot of inventory available do not expect any official word for some time.   I believe GM remains committed to their successful partnership with Isuzu, and all the LCF models will still be available from Chevy Commercial dealers.  Isuzu is on the cusp of opening a new large plant in South Carolina and there is also speculation that this may result in new product for both Isuzu and Chevy Commercial dealers.                  
    • davester
      push to talk button

      By davester · Posted

      drive the truck back to the dealer and complain that the button works.
    • davester
      push to talk button

      By davester · Posted

      drive the truck back to the dealer and complain that the button works.
    • nfisherman
      Software Update

      By nfisherman · Posted

      I have a 2026 2500 HD Ultimate. My phone app says there’s a software update available. It’s something about improved battery management and something to do with the running boards. I follow the instructions for the update but the “Check for Updates” option is greyed out in my settings menu. Has anyone else seen this? How did you resolve it? The help message just says “see your dealer” if the download doesn’t work. I’m just trying to save a trip. 
    • newdude
      Exhaust Question

      By newdude · Posted

      Fuel mileage?  That's all how you use your right foot.  Exhaust will give you sound.   Stock exhaust 5.3 is 2.75" diameter piping.     If the truck is nice and worth putting some $$ into it, I'd go for a Corsa catback.  I had one on my 2019 old body 5.3 and it was just perfect.  Zero drone, just driving around and cruising on the highway you'd think it was stock, but when you opened it up it was like a Camaro with the factory dual mode.  Corsa bumps their catback to 3in diameter.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...