Rear end noise 2017 Silverado

Logrolller · August 23, 2019

3 hours ago, Praedator said:

Here ya go. Seems like same part number but different insulators etc... Looks like rubber inner tube to me in there now!

My stock bottoms rubbers are round like that first pic, and the others are square as in your pics. If the leaf spring replacements are the same and the rubber is actually different, that’s just stupid for them to replace all of it and not just the rubber spacer. My truck didn’t make noise until after 5k. I think yours will be noisy again, but you can tell us if I am wrong.

Edited August 23, 2019 by Logrolller

PVwoohoo · August 23, 2019

Here is a video i took today of the noise my 2018 Chevy Silverado with 6400 miles makes. I have had it exactly one year.

PVwoohoo · August 23, 2019

i don't know how to embed a video, here is a link to youtube.

Logrolller · August 23, 2019

Rickety rackety camera mount noise didn’t help. Clean and superlube your leaf springs, all of it and between leaf springs.

Show me how you mounted that Gopro.

PVwoohoo · August 23, 2019

57 minutes ago, Logrolller said:

Rickety rackety camera mount noise didn’t help. Clean and superlube your leaf springs, all of it and between leaf springs.

Show me how you mounted that Gopro.

He He, the go pro was mounted securely, did you see any movement in the video?

It was clamped to the rear bumper with a very stiff mount I purchased just to get this video. I am uploading another video now and will post it soon.

PVwoohoo · August 24, 2019

here is another video you can here it at 32 secs in

Logrolller · August 24, 2019

Sounds like leaf spring slap. The sound likely travels the frame making it seems like a weird sound for leaf springs. I placed a piece of dirt motorcycle tubing between the leaf springs and the noise went away.

pics previously posted.

PVwoohoo · August 24, 2019

1 hour ago, Logrolller said:

Sounds like leaf spring slap. The sound likely travels the frame making it seems like a weird sound for leaf springs. I placed a piece of dirt motorcycle tubing between the leaf springs and the noise went away.

pics previously posted.

Thanks Logroller

I am not really wanting to work on a truck that I paid alot of money for to put a band aide on so it doesn't make any more noise

hopefully it can be fixed by the dealer

Logrolller · August 24, 2019

Hopefully they can for you, but like me and many others, so far and for years there is no GM fix. At least there isn’t a TSB that is public. I asked again on my rig this week and the answer is still....nothing. Some people are going after market, some do what I have done (20 minutes of your time), others have dealers clean and lube and others have their leaf springs replaced. The first two seem to resolve the issue and the the latter two seem to always result in the noise coming back. But don’t let that stop you. I want a fix from GM as well.

Jh8473 · August 24, 2019

This is what i did for a temp fix.

Logrolller · August 25, 2019

5 hours ago, Jh8473 said:

This is what i did for a temp fix.

The problem is, the grease collects dirt and the problem comes back. Had the dealer do it a few times. Seems like if they improved the rubber pads, problem may be solved. Take note, cover the screwdriver or pry bar with a shop rag to reduce leaf damage.

Edited August 25, 2019 by Logrolller

Logrolller · August 25, 2019

https://www.coloradofans.com/threads/leaf-spring-slap.409855/

and

And it seems to be all models of Chevy/GMC trucks from small to large engines/suspension.

Edited August 25, 2019 by Logrolller

no12nv · August 30, 2019

i've read the clunk issue alot. i have it in mine as well. from what ive read an im gonna try is the 2.5 ubolt addon. which is basically hit ur local parts store get a 2.5in set of ubolts. put them over your leaf spring say 5.5 to 6 in in front of axel on both side .n torque to 80lbs as well as re torque your factory ubolts to min 80ftlbs to 100 max. apperently this is tried tested and works. parts are like 10$ so worth a shot.

Chad2815 · August 30, 2019

3 hours ago, no12nv said:

i've read the clunk issue alot. i have it in mine as well. from what ive read an im gonna try is the 2.5 ubolt addon. which is basically hit ur local parts store get a 2.5in set of ubolts. put them over your leaf spring say 5.5 to 6 in in front of axel on both side .n torque to 80lbs as well as re torque your factory ubolts to min 80ftlbs to 100 max. apperently this is tried tested and works. parts are like 10$ so worth a shot.

Tried that, didn't work for for mine and it skuffs the heck out of your leafs.

PVwoohoo · August 30, 2019

I took mine to another dealer on monday and they were able to find the new service bulletin about this and are ordering the parts hopefully this will fix the issue. I also emailed the other dealer that would not do anything about the problem and let them know that their service writer didn't do any research on the solution for this problem even after I told him that there was a new part that should fix the problem. I then got a call from them and they told me that they found the new service bulletin and were sorry about not giving me good service. GM doc #5084607 is what they put on my work order.