Do you have air suspension?

 

No. It has regular shocks

 

Welp, that's all I got.

 

Thank you

 

I had an intermittent rattle during acceleration on my new 2020. Was able to record the sound using my phone and shared it with the service advisor. They were fairly easily able to find where the exhaust was rubbing against the heat shield after about a day. Collect as much information about when and where you hear it and schedule a service appointment.

 

Sounds good. Thanks

 

check the jack, or remove everything, see if it goes away?

 

Yes I did remove everything and it is still there

 

With a 2021 have the dealership figure it out under warranty.

 

I have made an appointment with the dealership. Hopefully they don’t give me the run around. If so I will push it to the moon

 

I had that same kind of noise and did the same things you did it turned out to be the license plate would smack against the tailgate when you hit a bump, I attached a couple rubber bumpers to the back of the license plate and that was the end of the noise

 

Thanks for the heads up.
I removed the license plate and bracket and that was the problem. I placed foam rubber weather stripping behind it and problem gone. Thanks again I appreciate it.

 

Great news.
The dealership found the problem.
The K bracket in the rear suspensions bolts were not torqued to the correct manufacturers specifications right from the factory.
All suspension bolts were torqued to factory specs and it now rides beautifully.
WORD OF CAUTION
It is a common problem as the dealership found many more 2021 Grand Cherokees with the same problem.

 

Not a knocking noise, but still a very irritating noise on speed bumps and turning in parking lots on uneven surfaces. Looked at everything. Then discovered when I had my cargo cover extended, it was making the noise. Now just leave it un-extended unless there are items in the back that I don't want visible.

 

What's a K-bracket??

 

It holds the suspension to the chassis.

 

Fix for Front Chassis/Suspension Creak/Squeak

Creaking noise coming from the front of the vehicle, that goes through the whole body and might sound like its coming from the inside the cabin, associated with the acceleration and braking at low speeds, suspension going up and down at low speeds... The front sub-frame that holds the...

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