Jump to content

Knocking noise in back end of 2018 Chevy Silverado LTZ

StrongSilverado18
 Share

Recommended Posts

StrongSilverado18 New Member

StrongSilverado18

Posted
Posted

Hello to all my GM people! Can you please give me some insight into why my 2018 Chevy sounds like the back end is always grinding/knocking and just flat out making a ton a noise you would not expect to be there from such a new truck. I bought this thing brand new and I have heard some rumors that these trucks are known for this issue. Any solutions? Feedback? 

 

 

Appreciate yall! 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Mines makes noise on uneven changes like going up a driveway, doesn't bother me. Probably just the leaf springs or something making the sound.

Jmanson6262 Enthusiast

Jmanson6262

Posted
Posted

Cam, can you feel yours when it pops n knocks? Mine almost feels like bad struts but in the rear. I know the suspension is good as I only have 33k on the truck and don't really use it rough. It drives me nuts hearing it.

Sent from my SM-N975U using Tapatalk

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Sometimes yes and sometimes no. Kinda just depends on where/what I am doing. I even wonder if part of the noise in the bed flexing/moving and the tailgate getting pushed/moved causing the noise.

Jmanson6262 Enthusiast

Jmanson6262

Posted
Posted

I thought that too. I checked all my body mounts just last week. It wouldn't bother so much if it had always done this but it only started a few weeks ago. I have read that some have thrown rubber in the leaf packs. Might give it a try n see what happens.

Sent from my SM-N975U using Tapatalk

StrongSilverado18 New Member

StrongSilverado18

Posted
  • Author
Posted
18 hours ago, jamisonericksen said:

Cam, can you feel yours when it pops n knocks? Mine almost feels like bad struts but in the rear. I know the suspension is good as I only have 33k on the truck and don't really use it rough. It drives me nuts hearing it.

Sent from my SM-N975U using Tapatalk
 

Same! I am taking it tomorrow and found a comment on youtube from a guy who said he RETorque  everything in the back and it worked. So we shall see.

Jmanson6262 Enthusiast

Jmanson6262

Posted
Posted
Same! I am taking it tomorrow and found a comment on youtube from a guy who said he RETorque  everything in the back and it worked. So we shall see.
Strong, let me know what your outcome is on this please.


Sent from my SM-N975U using Tapatalk

StrongSilverado18 New Member

StrongSilverado18

Posted
  • Author
Posted
2 hours ago, jamisonericksen said:

Strong, let me know what your outcome is on this please.


Sent from my SM-N975U using Tapatalk
 

Yes, will do! Have a good day

NITTY Enthusiast

NITTY

Posted
Posted

Not sure if same sound or not but after having my truck a month I had the bed sprayed Line-X and Krown Coating Undercarriage.  Shortly after I noticed a "knock" in the rear.  Had somebody bounce the back while I stuck my head in the fender well and it is the leaf springs on both sides.  I haven't tried to diagnose further but I was assuming it had something to do with the extra weight (wouldn't think that would be a problem) or the Krown Coating with collects a lot of dust and gunk.  I was going to pressure wash the leaf springs real good and see if that does anything but I'm not hopeful.

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

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,778
    Total Members
    8,960
    Most Online
    daveishi
    Newest Member
    daveishi
    Joined

  • Who's Online   2 Members, 0 Anonymous, 946 Guests (See full list)

  • Latest Articles

  • Posts

    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      Because that is IDIOTIC, much like this question. They've already been forced to do it by past administrations - why would you roll that back when it's a GOOD thing?  WHO IS ARGUING FOR LOWER MILEAGE???? 😂  NOBODY IS!!   I'm certainly not! What I want is RELIABLE vehicles again that are worth the price paid!    I don't get your logic here ...   In 2003 I paid $2,200 for our '86 Grand Marquis. It's STILL running and I've never been inside the engine, aside for the timing cover since it was leaking, so I threw a new timing set in since that makes sense. Transmission is ORIGINAL. Electric pump in the gas tank is ORIGINAL. Rear end is ORIGINAL. I'd have to hit my head REAL hard to want to pay $60k or more for a car that still can't come close to the comfort, seating and storage space, or reliability of this one. Nothing is even in the ball park! Hundreds of thousands of brands and models have been built and sent to the crusher while this one keeps on going!   https://postimg.cc/Z9XRrCSg   I've got a whole fleet of cars, motorcycles, and a truck close to this age for summer and winter. No one could pay me enough to buy anything built this century. I have zero use for any it.
    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      Since I'm the one who has to fix them when they break, I'll take vehicles over 30 years old all day, EVERY day, over ANY modern crap. Have you attempted any repairs on anything built after 2006? It's a friggin nightmare, and gets worse the newer the model year.    If I had the will or desire, I can make any car of any age outside of a Model T (I don't have THAT much will ...) just as powerful, comfortable, and have all the tech the new stuff does, and get pretty close in mileage, too. I prefer SIMPLICITY. The less the vehicle has, the less to fix WHEN it breaks, not IF.   I'm glad you snot-nosed punks don't like them. More for us, plus that keeps the prices from climbing more than they already have.👍
    • cautious optimist
      2027 GMC Sierra: Official Discussion

      By cautious optimist · Posted

      Bringing this thread back on topic. I just noticed the incredible lack of bright chrome across the entire new lineup. Even the Denali has tinted the brightwork in the grille and has none elsewhere. None of them have chrome bumpers. As far as I can tell there aren't even chrome mirror caps. I'm curious if this also happens out back? Are there no chrome rear bumpers either? This is quite the departure for GMC.
    • cautious optimist
      2027 GMC Sierra: Official Discussion

      By cautious optimist · Posted

      Bringing this thread back on topic. I just noticed the incredible lack of bright chrome across the entire new lineup. Even the Denali has tinted the brightwork in the grille and has none elsewhere. None of them have chrome bumpers. As far as I can tell there aren't even chrome mirror caps. I'm curious if this also happens out back? Are there no chrome rear bumpers either? This is quite the departure for GMC.
    • cautious optimist
      2027 GMC Sierra: Official Discussion

      By cautious optimist · Posted

      Bringing this thread back on topic. I just noticed the incredible lack of bright chrome across the entire new lineup. Even the Denali has tinted the brightwork in the grille and has none elsewhere. None of them have chrome bumpers. As far as I can tell there aren't even chrome mirror caps. I'm curious if this also happens out back? Are there no chrome rear bumpers either? This is quite the departure for GMC.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...