Jump to content

2018 Sloppy Clunky rear end

baddog2010

By baddog2010
in Troubleshooting & Recalls

 Share

Recommended Posts

baddog2010 Enthusiast

baddog2010

Posted
Posted

Has it been common to have a clunky noisy backend? Sounds like a loose sloppy brake drum, third member or a spare tire swinging around. Sometimes think the blinking wheel is gonna fall off, as if loose lug nuts. Really gets your attention at times, idle, slow speeds, backing while turning. Cant seem to make it happen, some what random. Have some Drive line, U-JOINT slap on down shifts common also.

Noise started around 6000 mile. Seems to be progressing with time, now 24600.

Jaychevy81 Enthusiast

Jaychevy81

Posted
Posted

Grease your leaf springs jack it up from the hitch get some grease from auto zone made for suspension. Insert a pry bar between the leafs and grease them. Grease the pads on both ends the springs are shifting and causing the clunk. Sand and dirt get caught between them. I do this every couple months when I hear a clunk mostly around a turn or backing into my driveway.


Sent from my iPhone using Tapatalk

Jaychevy81 Enthusiast

Jaychevy81

Posted
Posted

I also had the drive line u joint clunking I fixed that by adding traction bars. It stopped the axle from flexing. I have a 18 with the 8 speed trans. So the trans is kinda Klunky. When the axle starts to flex under load then it would shift or hesitate it slams back down causing the clunk.


Sent from my iPhone using Tapatalk

Lsgun1 Enthusiast

Lsgun1

Posted
Posted (edited)

I agree its the leaf springs making the noise, mine did the same thing. Jack the truck up by the frame so the rear will hang and keep tension on the leafs minimal. Get a pry bar and pry the springs apart and you'll see a plastic pad, clean it off and put a piece of rubber in there then pop your pry bar back out. Do this on all 4 pads and you won't hear the noise again.

Edited by Lsgun1
Donstar Senior Enthusiast

Donstar

Posted
Posted

You have plenty of warranty remaining.  I know they may not be able to replicate the clunk upon first inspection but they will have your concern on record. Be persistent.  Personally, I'd avoid DIY repairs on such a new vehicle and enjoy the advantages of having a bumper to bumper / powertrain warranty.  

Mozzer Enthusiast

Mozzer

Posted
Posted
You have plenty of warranty remaining.  I know they may not be able to replicate the clunk upon first inspection but they will have your concern on record. Be persistent.  Personally, I'd avoid DIY repairs on such a new vehicle and enjoy the advantages of having a bumper to bumper / powertrain warranty.  
Agreed. My 2014 had squeaky springs at a few months old, I had power washed & sprayed lube in the springs & it would go away briefly. Took it in to dealer, they did the clean & lube, lasted a few days. Took it back & they installed new springs under warranty, that cured it for a couple of years. Now out of warranty.

Sent from my SM-A705W using Tapatalk

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

    342,837
    Total Members
    8,960
    Most Online
    bellssn690
    Newest Member
    bellssn690
    Joined

  • Who's Online   4 Members, 0 Anonymous, 705 Guests (See full list)

  • Latest Articles

  • Posts

    • Chuck FB
      Gas Prices

      By Chuck FB · Posted

      Interesting, I suspect I would have fueled up in Lee Vining as the day prior I would have filled up either in Laughlin or near there and maybe again before I entered Death Valley and once out the other side late that evening as I kept on driving into the night up near Lee Vining. Next morning I most likely fueled up in LV before heading over Tioga Pass into ( as I refer to it as "Yose .... Mite" 😁 ). And again that was 19 years ago but the price then must not have jumped out at me like the 5 bill a gallon theme of nutty cult hippy country Big Sir or head so far up their rear Aspen. I'd be curious to know where the highest prices are in the lower 48, I probably would not be far off to guess somewhere in Cali forn ie. Coldfoot and Prudhoe bay may have those prices beat but that is a whole other world up there and when prices are more normal elsewhere that is about what they can be up there I believe in no mans land. Anyway interesting that the 395 corridor is hosing people and the thing is, its tourist season and its not like there are a lot of competition options when driving up that highway from what I could see. Yup, big ole Boaterhomes and various other RV's ahead and behind me at the Yosemite entrance gate and they have to get their fuel somewhere.  
    • Atlas
      Gas Prices

      By Atlas · Posted

      Those can be high, as well as the big California cities. The ones that will pop your eyes out are the 395 corridor on the Eastern side of the Sierra Nevadas. Lee Vining, $7.19 for regular and $8.89 for diesel is what the Google said right now.
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Correct.  2019-2021 model years are serviced by a different p/n.  19420611.  Recall 2021s use 19420611.   The recall engines 2022-2024 model years are serviced with 12740076.     The difference between 19420611 and 12740076 is GM changed injector size for 2022.  The injectors are smaller on 12740076 with smaller injector bores in the cylinder heads to match the smaller injectors.  So you can't install a 19420611 in a 2022-2024, and you can't install a 12740076 in a 2019-2021.     Both engines are the replacement engine p/ns that are in the L87 recall.  So both of these are the updated engines.     Here's a version of the L87 recall with the p/ns for all the parts needed.    RCRIT-25V274-7075.pdf   Note it shows 19420611 and 12740076 with an asterisk to a footnote "Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which part to order if two or more part numbers are listed for the same part, as it may vary by vehicle options."    
    • 2017Z
      2020 Trailboss 6.2 replacement

      By 2017Z · Posted

      Looking for advice from this group. Took my flawless 2020 6.2 TB to an unnamed shop for routine rear brakes and oil change. Tech forgot to put oil back in after the full service and needles to say, destroyed my engine.  It’s all on their shop video so they are responsible.   I had my Chevy dealer do the analysis and they confirmed its compromised and said engine replacement. The manager said they only get GM reman engines from GM with full 3 yr warranty and the one they would put in is not same as what’s they are swapping out on 21-25 for recall.    I am looking for advice why that would be a different engine because obviously I had the good 6.2 year and replacing it has my concerns with that recall for 21-15   Also what’s the pros and cons of accepting the engine swap vs telling the shop that bricked the truck to pay up so I buy a new truck. I’m concerned about stigma resale eventually if I just decide to get rid of it after the swap or other issues showing up after the swap out.  
    • GN2018
      AFM Disabler Question

      By GN2018 · Posted

      Just looked up my records.  I've never gone over 5000 miles between oil changes.  At 46K miles, I have 10 oil changes.  I hope that will help.  I also installed the disabler last year.  I've still had a few times when it didn't seem to engage (which I can tell because the start stop feature kicks in), but for the most part, I think it's working.  For some reason, GM did not include the number of cylinders running in the information screen like I had on other models.  In my Cadillac, it shows me when it's running on 4 cylinders on the fuel milage screen.  I can't find that on my '21 Denali.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...