2016 2500HD Rear Leaf Clunk

GTBensley · May 22, 2019

I have read up a bit on this but most people with the issue seem to have 1500's.

I have a pretty loud clunk from the rear when going at low speeds in off camber situations. Pulling into my driveway causes it or moving in parking lots....sounds like I have a 10lb weight just flopping around in the bed of my truck.

I re torqued the U bolts and leaf spring mounts and also cleaned and tried lubricating the leafs. I am pretty confident the noise is coming from the leaf packs.

Has anyone else had this issue and how did they solve it? Truck is a 16 2500HD with 34K on it.

Appreciate the input

sillywillie07 · May 23, 2019

My truck did it. They greased the leaf springs, it worked for a while. It started it again, really loud now. Gotta bring it back. Mine is right rear. 32,000 miles on it.

GTBensley · May 23, 2019

I just sprayed a sillicon lubricant on mine and that helped....but when its making noise its very loud.

I believe I am out of the 3 year warranty now :-(

GTBensley · May 31, 2019

Well the noise goes away for about a day if I lubricate them but it does come back.

Thinking I will just live with it for now and maybe have some custom leafs made in a while that hopefully will solve it.

Jaychevy81 · May 31, 2019

I know yours is a 2500 but I am trying to battle this 4 trips to the dealer in and still clunking. I’m trying to figure out if it’s the springs. I get a Ka Klunk over my driveway apron. Or on right hand turns it’s not a creak I’m at a loss

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Jaychevy81 · May 31, 2019

Also I did grease the spring pads not the whole spring.

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sillywillie07 · June 1, 2019

I think there get a grove wore in them, and it catches on the lip of the other spring and thats causes the clunk. Mine is bad again. Im going to call the dealer again to see if there is a fix for it now.

GTBensley · June 8, 2019

It sure seems from the springs. I can spray them down and it goes away for a few days.

I may cut some small rubber pads and out them between the leafs to see if that helps. It's a pretty bad noise at times. I can make it happen if I cut sideways across a driveway or hill when it makes the rear axle flex.

Can't believe GM hasn't figured this out yet....must be because the leaf spring is such a new design ?

Roy V · September 12, 2021

My 2020 2500hd is doing the same thing when going over bumps like when going over a speed bump on an angle. Thought it was the spare or something above it. If you get the truck rocking from side to side by pushing on the side of the bumper ( you really have to get the sidewalls of the tires flexing)it will make the noise. (It’s not the axel end play click, it’s a deep, inside the rear clunk.)When lying under the back of the truck while someone rocks it side to side, it feels and sounds like it is coming from inside the rear. I have 17568 mi on it. It made the noise a little when new but is getting worse after 1 year of driving.This truck has never hauled or towed anything.

Roy V · September 12, 2021

On 6/8/2019 at 7:07 AM, GTBensley said:

It sure seems from the springs. I can spray them down and it goes away for a few days.

I may cut some small rubber pads and out them between the leafs to see if that helps. It's a pretty bad noise at times. I can make it happen if I cut sideways across a driveway or hill when it makes the rear axle flex.

Can't believe GM hasn't figured this out yet....must be because the leaf spring is such a new design ?

I think it’s inside the rear. I just posted on this. I’m going to bring it in for warranty and tell them where to look .