Jump to content

Rear end clunking noise

Nofastcar
 Share

Recommended Posts

ashmores New Member

ashmores

Posted
Posted (edited)

Hey ashmores,

 

We're sorry to hear you're experiencing a similar clunking noise in your Silverado. We'd be happy to contact the dealer on your behalf and look into this further. Feel free to send us a PM with you full contact information, VIN, mileage, and involved dealer if interested. If you're unable to send a PM due to just joining the forum, we can also be reached via email at [email protected].

 

Sincerely,

 

Eddie A.

GM Customer Care

Hello Eddie! I appreciate the help. I will keep this in mind if my second attempt at getting the issue fixed at this dealer fails (I take it in early next week). I want to give them the benefit of the doubt and explain my concerns with the service manager this time.

 

I have tried to not think about the sound (as it is very agitating and gets my frustration level up when I think about it) so I have my music up and going until curiosity got to me a few days ago and, yes, I do hear the clunking when I slow down but it is not as noticeable as when accelerating.

 

It's quite odd because the noise is extremely similar to the clunk I hear when I step onto the running board (both sides). I believe i read on this forum something similar from another poster. Hmm.

 

Here's hoping the noise generates when I actually take it to the dealer.

 

Edit: When I made the appointment the employee on the phone stated that he had a guy in there "that day" with the same sounding issue. Fingers crossed the found a solution?

Edited by ashmores
  • 3 weeks later...
  • Replies 101
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

patriot
patriot

My rear end clunks when I eat Mexican food.

8.1HD/ALLISON
8.1HD/ALLISON

Sounds exactly like the slip yoke concern of previous models.....   Sent from my LGL86C using Tapatalk

pm26
pm26

The problem is most likely the slip yoke. It appears that GM has really sloppy tolerances on these parts and if your truck has a bad case of tolerance stack up (i.e. smallest spline diameter on the y

tahoeupset Enthusiast

tahoeupset

Posted
Posted

I have a 2015 Tahoe and had the clunking as well. They fixed a recall where the transfer case was getting stuck in 4WD High, and since the fix I have not had a problem with that although I have only driven it 2 days since the fix because it has been at the dealer for two weeks for electrical issues....

davidegl Enthusiast

davidegl

Posted
Posted

I have a 2015 sierra denali with the "clunk". About 1400 miles and the first I noticed it was about 200 miles. It occurs when shifting up or down at low speed with little throttle. Feels/sounds very much like u-joint but hope it isn't the differential. Haven't had to dealer yet. Has anyone solved this issue either on their own or with dealer assistance?

EXSlider400 Senior Enthusiast

EXSlider400

Posted
Posted

Both 2014 I have did this. Current one still does. Low speed down shifts and after letting go of throttle then applying...especially on an angle up or down hill...clunk.

 

I think it is the 6 speed Trans and have heard that a good tune will fix it. But until the warranty runs out I am not touching anything.

davidegl Enthusiast

davidegl

Posted
Posted

Both 2014 I have did this. Current one still does. Low speed down shifts and after letting go of throttle then applying...especially on an angle up or down hill...clunk.

 

I think it is the 6 speed Trans and have heard that a good tune will fix it. But until the warranty runs out I am not touching anything.

Just for reference...I have the eight speed. I will find it hard to accept living with that defect on any new truck. Maybe my dealer will be more accommodating.

EXSlider400 Senior Enthusiast

EXSlider400

Posted
Posted (edited)

When the 6-speeds came out this was an issue and even though the 2014+ 6-speeds shift better, still has some issues and as far as I know GM did not do much to address it on the 900 series so I doubt they will address on the newer trucks (6 or 8 speed) either...there are no options for them to do other than GM issuing an updated tune(doubtful). Most dealer techs are just "Part Changers" or have their hands tied so the best source is a forum like this. You can also ask to speak to their GM rep which may help. I agree that the clunk is annoying at least but unless you get a tune....or another brand truck with its own different set if issues...you may be stuck with it. The clunk didn't seem to affect any long term reliability on the older trucks so I am not too worried about it. and the 8-speeds are even stronger than the 6-speeds. I still rather the smoothness of my 4-speed but the more gears the better MPG and towing stats so those days are gone.

 

I am sure I will get some crap for this post but.....it is what it is.......

Edited by EXSlider400
f8l vnm Senior Enthusiast

f8l vnm

Posted
Posted

Same low speed clunking here on my 14 sierra.

Took mine to dealer and they did the transfer case recall and it's still doing it.

Like I've said before the drivability of this this truck is a f'n joke. The jolting, clunking, confused , not knowing when to shift etc is ridiculous. Tune or transmission , it sucks. Off course my dealer plays the stupid game :)

I love my truck but I'm so happy I leased this thing and didn't buy like I was planning on.

pm26 Senior Enthusiast

pm26

Posted
Posted

I have a 2015 Tahoe and had the clunking as well. They fixed a recall where the transfer case was getting stuck in 4WD High, and since the fix I have not had a problem with that although I have only driven it 2 days since the fix because it has been at the dealer for two weeks for electrical issues....

What a great reliability record. I feel a sudden urge to sprint to my local Chevy dealer and spend $ 50k+ on a piece of junk that these vehicles seem to be. :rolleyes:

pm26 Senior Enthusiast

pm26

Posted
Posted (edited)

I have a 2015 sierra denali with the "clunk". About 1400 miles and the first I noticed it was about 200 miles. It occurs when shifting up or down at low speed with little throttle. Feels/sounds very much like u-joint but hope it isn't the differential. Haven't had to dealer yet. Has anyone solved this issue either on their own or with dealer assistance?

The problem is most likely the slip yoke. It appears that GM has really sloppy tolerances on these parts and if your truck has a bad case of tolerance stack up (i.e. smallest spline diameter on the yoke and the largest permissible yoke opening, then you will have a very clunky vehicle. It is really luck of the draw. There was a rumor that GM had a fix for this problem years ago and that they were installing nickel plated yokes on troublesome vehicles. I am not sure if this was real or only a rumor. Supposedly the nickel plating reduced the sloppiness of the yoke fit and made the trucks quieter.

Edited by pm26
  • Like 2
02suburbanZ71 Senior Enthusiast

02suburbanZ71

Posted
Posted

The problem is most likely the slip yoke. It appears that GM has really sloppy tolerances on these parts and if your truck has a bad case of tolerance stack up (i.e. smallest spline diameter on the yoke and the largest permissible yoke opening, then you will have a very clunky vehicle. It is really luck of the draw. There was a rumor that GM had a fix for this problem years ago and that they were installing nickel plated yokes on troublesome vehicles. I am not sure if this was real or only a rumor. Supposedly the nickel plating reduced the sloppiness of the yoke fit and made the trucks quieter.

 

^^^ what he said. Almost every gm truck/suv does this. Not all but most. It is the slip yoke and they did offer a nickel replacement for a pretty penny

fondupot Senior Enthusiast

fondupot

Posted
Posted

I think a lot of the issue stems from torque management. Because when I have my blackbear tune installed with 50% TM turned off, I don't get the signature clunk. I just realized this, because I had to take my Blackbear tune off for a dealer trip and noticed the clunk came back.

 

It's like the torque management builds up and then releases causing a clunk. Torque management is JUNK.

  • Like 1
EXSlider400 Senior Enthusiast

EXSlider400

Posted
Posted (edited)

Interesting TM comment... when I had the 3.08 I joked because when pulling out in front of traffic (usually to make a quick turn into somewhere), it had a "rev up delay then go" like a "buildup"... it was like not letting go of the clutch in time in a manual....or the little train that could...3.42 still clunks but no delay.

 

 

...I'm goin....i'm goin...i'm goin.......and here I go. :tumbleweed:

Edited by EXSlider400
  • Like 1
georgedrauton New Member

georgedrauton

Posted
Posted

Hi this is my first post. I too found this forum while searching for a solution for the clunk noise, which started on my 2014 Silverado at about 5000 miles. My dealership also told me it was normal and I shouldn't worry about it. But when you spend $45k on a truck you shouldn't have to deal with what feels like the rear end is about to drop out every time you come to a stop or accelerate. If I don't get a resolution soon, I'm going to have to trade it in on a new brand. Which would suck because I will loose money, and other than the clunk, I love that truck!

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

    • Chuck FB
      Correct way to service 2024 l8t allison trans?

      By Chuck FB · Posted

      I have never seen GM instructions for the other trucks as per the HD with the 6 speed or the half tons but had got the impression that the HD trucks with the 6 speed were not having the same problem that the 10 speed and pan presented. Also video that I have seen of the HD 10 speed with the gas engine starting in 2024 model year showed that it was a real struggle to even make it work when pulling down hard on the exhaust after undoing the exhaust hanger bracket on the side of the transmission as after all there is little room for the pipe to even go down behind the Y joint as it soon would hit a frame cross member. Also that they had tried just like I did with the gasket off and no way was that pan coming out any way they tried to manipulate the pan. From that as well as the local transmission shop talking about the pain in the rear issue, I was not expecting my pan to come out because GM shows it was not even intended to come out without dealing with the exhaust piping.    It would be nice to claim, here's what you do and its easy to remove the pan guaranteed on any HD truck with the gas 10 speed but dollars to donuts the next guy trying what I did would not have the same luck as the exhaust was just manufactured slightly different and be pissed off at my claim that the pan comes out with no issue. Its more of a try and see if your particular truck might work like mine did .... or not !. 
    • carkhz316
      Correct way to service 2024 l8t allison trans?

      By carkhz316 · Posted

      Sorry I didn't see this until now, but it works on both the 6 speed and 10 speeds, as well as all the half tons too.
    • 1998sleaze
      Engine vibration after motor mount replacement.

      By 1998sleaze · Posted

      Hello, I have a 2018 GMC Sierra 1500 that I recently changed both motor mounts on due to the driver's side being blown out. After replacement I seem to have a steady vibration that I can feel in the pedals and the back of the seat. At this point I'm convinced that the aftermarket "Anchor" branded mounts I used are not performing as well as OE, the only real reason I ended up using the mounts in question was because my local dealers were out a few months to get a Driver's side mount. I've tried "Neutralizing" the mounts according to the motor mount TSB published for these truck to no avail. My trans mount is also in great shape and seems to be absorbing vibrations swimmingly. As far as I can tell there is no issues idling, my idle RPM is steady and I've recently put GM plugs and wires on, however, I have not cleaned the throttle body or intake valves. Any one else have a similar experience with aftermarket mounts? Patience certainly is a virtue that I wish I exercised here. Thank you!
    • CamGTP
      Winter Returned

      By CamGTP · Posted

      I still saw people out for runs, on their bikes/motorcylces, jeeps with the doors off driving around here the past 2 days. I guess we are just used to it here haha.   Tasted like a bonfire the last 2 days.
    • CamGTP
      6.2L (L9H) Owners - Get all your questions answered here

      By CamGTP · Posted

      The TCM has to be flashed before it can drive.   If you installed it the way it is, it has the OS (operating system/program) from the 2010 truck you got it from. That will not match with the VIN/OS pair that your 2013 truck has.   You can do the full install. Then tow it to a dealership and they can flash the trucks PCM/TCM with the latest program for your VIN.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...