Popping/creeping noise over slow bumps

[3.0_rst]

Hey all, I’ve been noticing a popping/creeping noise coming from the rear somewhere on my 2021 Silverado 3.0 duramax, and I just can’t figure out what it is. Mostly when I’m going slow over speed bumps, and especially when in reverse backing into driveway. Has anyone else experienced this? 

[Phantom 4D]

1 hour ago, 3.0_rst said:

Hey all, I’ve been noticing a popping/creeping noise coming from the rear somewhere on my 2021 Silverado 3.0 duramax, and I just can’t figure out what it is. Mostly when I’m going slow over speed bumps, and especially when in reverse backing into driveway. Has anyone else experienced this? 

Have tha same thing in my 2019 Sierra. Especially backing up. Dealer says it's normal. But then, your bumper could fall off and they would say that's normal. I'm trying to figure it out too. 

[Tedk]

I had a similar issue on my Trail Boss. Turned out to be the leaf springs making all that noise. 
 

These ended up solving the problem since my dealer wasn’t much help:

https://www.spring-things.com

[Aaron Dalrymple]

On 10/2/2021 at 8:12 PM, Tedk said:

I had a similar issue on my Trail Boss. Turned out to be the leaf springs making all that noise. 
 

 

Same.  Instead of buying the spring things, I just cut 4 squares of rubber from a roll of rubber floor material.  Jacked up the rear, inserted rubber squares.  Been holding for about 2000 miles now.

[econometrics]

I've been mostly ignoring my creaky leaf springs for a while now, but didn't realize I could buy such a simple fix. Just put in an order online for this kit. Nice!