Jump to content

Rear End Clunk/rattle 09 Sierra

Northern Sierra

By Northern Sierra
in Ask A GM Technician

Recommended Posts

Northern Sierra Enthusiast

Northern Sierra

Posted
Posted

I have an 09 sierra Z71 and have just recently developed a clunk or rattle/ rubbing sound when going over speed bumps and an angle or bumps that are uneven for both rear wheels. this sound is also heard when pushing on the side of the box making the truck shake from side to side. you can also hear it when grabbing the top of the tire and agressively shaking it. i just had my truck to the dealer and they re-torqued the leaf spring bolt as per a service bulletin. however the sound is still there. the mechanic said the sound was only the axle floating back and forth. but to me it just doesnt sound like it should be making this sound. i shuck a new truck on the lot and it did not make such sound. any input would be appricated.

 

thanks,

Chris.

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

you can't get a diag here and if you are not happy with the truck ,take it back ,call the regional service manager ,also take the service manager or shop foreman for a drive to duplicate it for them ,leave the truck with them and say "fix it" !!!!get mad

 

shaking the truck is not the same as driving it,tech is right thats the diff /axles slapping back and forth,don't mention that again.it lessons your credability to them

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      first oil change - 2026 2500HD gas

      By Chuck FB · Posted

      Indeed a proper drain tap or drain valve with adapter that has a hose on it that opens up the valve as the adapter goes on is a slick setup and have that for certain highway tractors etc and other equipment that came from the factory with a tap but this L8T is pretty darned good other than me doing it on the floor and easy to touch hot exhaust and am not as agile as I used to be !. If I really want to pull a hot filter on an engine I will use an insulated set of thick neoprene gauntlet gloves but I am not in the hurry I used to need to be so things are done more relaxed and in theory somewhat safer ... I think LOL.    And as I mentioned the unique shape of the Amsoil 1 quart containers, while they might not work as well as an offset pour spout container for some awkward engine location applications, they are working a lot better with my Lisle funnel kit because of how they prop up on all four corners when upside down resting on the rim of the funnel where the typical quart container would never stay put without holding onto it. 
    • mrbflat
      Clunk when coming to a stop... driveshaft/slip yoke? Mechanic couldn't recreate it

      By mrbflat · Posted

      Well, I just hit 100K a few weeks back, and I can honestly say I have not had any major issues with my '21 5.3 Crew cab.  I have done most routine maintenance, oil changes, air filter, tire rotations, and a transmission drain and filter change (not even a full flush).  A couple of months ago, I started experiencing the dreaded CLUNK when coming to a stop, sometimes hard enough to literally push the truck forward! After researching here and in other forums/youtube videos, etc, I was thinking it's the slip yoke. I finally had a chance to take it to my local mechanic today, and he was not able to recreate the issue.  Amazing, since it does it nearly every time I drive.  He also said he can't simply grease my slip yoke/driveshaft splines, because I have a 1 piece driveshaft.  I am not sure what else I can do.  Has anyone else had this issue or have any idea what else it could be?
    • Black02Silverado
      first oil change - 2026 2500HD gas

      By Black02Silverado · Posted

      This is where the Fumoto drain valve comes in handy.  No mess and able to change oil hot, like right off the interstate hot.  Flows nice and you can direct it into a container. As for the oil filter, I use an old dixie cup or plastic one from McDonalds. It contains the oil as you pull the filter down and not all over your hand.
    • Black02Silverado
      Which 2027 engine will you choose?

      By Black02Silverado · Posted

      Well, if it did change from lifters to rocker arms, at least it would be easier to fix as they fail.
    • Black02Silverado
      HighMileage oils or stay with Dexos 1 ?

      By Black02Silverado · Posted

      Doesn't hurt to try.  It's my understanding that you have to run it at least 4 or 5 oil changes for things to get clean.  Think about it, your engine didn't get dirty in just an oil change so over time it will slowly clean. It's the safest way to do it and not have seal issues.      I remember  a product that came out a long time ago, AutoRX, it was an additive you put in the oil and then drove for 3k miles. Some saw improvements and some didn't. It was suggested to use a non synthetic with it at the time. Same observation, use a couple oil changes and give it time to work. It also stated it worked best if you could drive on trips to keep the oil hot.  I'm sure if you ask AI it could tell you all about it.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...