Popping noise in the rear

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crb_6.4

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I got my lifted 2016 2500 new back in October and as long as I can remember whenever I hit a bump or a pot hole at slower speeds I hear a popping noise and it sounds like it's coming from the rear. I've checked under the bed and everything seems to be tight. Anybody have a clue what could be causing the noise?
 

bpa88

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Did you check your spare?


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crb_6.4

crb_6.4

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I removed the spare a couple of days after I got it because it's a smaller size then what I'm running.
 

bpa88

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Gotcha, noises are the hardest things to diagnose lol. Only thing I could think to do if you haven't tried something similar already. Is find a decent rut or hole and slowly I mean like 1-5mph dip your front and rear in it and with your head out the window listen for the pop, (i know not very scientific)repeat for the opposite side and increase speed till you hear it. Try to narrow it down to the left or right side and front or back and go from there.

*just realized you said it was lifted also-is it a full suspension lift, leveling kit or body lift. Check any spacer blocks or shims if you see any, they may be hitting or causing another suspension component to hit the frame bump stops.


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Hootbro

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I will bet a cold beer it is going to have something to do with the rear springs. If they are not seated in the mount correctly, they will make a pop sound.
 
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crb_6.4

crb_6.4

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It came from the dealer with a 4inch zone suspension lift.
 

bpa88

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It came from the dealer with a 4inch zone suspension lift.



Check the top of the back springs-see if they reinstalled the rubber isolators. As said by the other member check the springs to make sure they are seated correctly.


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crb_6.4

crb_6.4

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I will bet a cold beer it is going to have something to do with the rear springs. If they are not seated in the mount correctly, they will make a pop sound.

I noticed the rear coils look like they're tilted forward a bit.
 
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crb_6.4

crb_6.4

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Check the top of the back springs-see if they reinstalled the rubber isolators. As said by the other member check the springs to make sure they are seated correctly.


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I'll have to check that when I leave the house in a bit
 

Hootbro

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I looked that lift up and it looks like they put in rear spacer for the coil springs. That is where I would be looking.

Might want to lean on the dealership since they installed this.
 
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crb_6.4

crb_6.4

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I looked that lift up and it looks like they put in rear spacer for the coil springs. That is where I would be looking.

Might want to lean on the dealership since they installed this.

I would take it in but I work 12 hour days and they're closed on the weekends. Also it's my only ride to work.
 

Hootbro

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I would take it in but I work 12 hour days and they're closed on the weekends. Also it's my only ride to work.

You got to do whatever you have to do I guess. I can relate.

I will also add that you are basically married to that dealership when it comes to any warranty issues with the drivetrain.
 

Coop427

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Try this. Twist the rear shocks and check for play. If they put new shocks on the rear when they did the lift and didn't replace the bushings, there will be play between the bushing and the factory shock bolts. So every time you hit a bump, you hear the play between the bolt and the rubber bushing. Bilsteins need to have the original bushings replaced with ones that have a larger inside diameter then there needs to be a metal sleeve inside the rubber bushing. Another way to check is to remove the bottom shock bolt and look at what's inside the shock. I believe it's a 21mm bolt&nut.
 
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crb_6.4

crb_6.4

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Try this. Twist the rear shocks and check for play. If they put new shocks on the rear when they did the lift and didn't replace the bushings, there will be play between the bushing and the factory shock bolts. So every time you hit a bump, you hear the play between the bolt and the rubber bushing. Bilsteins need to have the original bushings replaced with ones that have a larger inside diameter then there needs to be a metal sleeve inside the rubber bushing. Another way to check is to remove the bottom shock bolt and look at what's inside the shock. I believe it's a 21mm bolt&nut.

It's -1 here and I just crawled up underneath it and checked for the rubber isolators like bpa88 said. They're all there. I'll check the shocks after work tomorrow when it's a little warmer. Haha
 

bpa88

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Hmm. At this point I would recommend letting the dealer who installed the lift take a look at it. Not much else I could think of besides everything that was mentioned here.


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huntergreen

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agree, let the installer fix this.
 
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