slow speed suspension clunking

GMCustomerService · July 1

On 3/21/2020 at 5:04 PM, Gthompson said:

I'm having some issues with my brand new AT4. Just purchased a 2020 AT4 (2 weeks ago), had 24 miles on it. Within 100 miles it started making a clunking sound under the bed. Another 50, the steering started pulling and I had to take it in. Took it in and they tightened the u-bolts for the leaf springs which fixed most of the problem. The issue I still have is an annoying clunking sounds somewhere towards the middle of the truck, all the time. Happens at every stop sign, every turn, every speed bump. It's driving me crazy. The last time the dealer wouldn't even take it in. They said, "let us do some research before we bring it in." The suspension definitely doesn't feel like it did day 1, feels a lot "looser" and the clunking sound is tough to deal with.

Anyone having similar problems? Find a fix for it?

Thank you!

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davester · July 4

Damn, 4 years late... It's not even going to be in warranty anymore.

Rst2024 · August 17

On 6/27/2024 at 4:40 PM, Joeee said:

2024 crew LTZ

same issue.
It’s currently in shop with under 1000 miles on it. Made the head manager ride with me so I wouldn’t get the “can’t mimic sound.”

he heard it several times and said yea it’s not suppose to do that.

Any updates I have a 2024 RST doing the same thing started at 500 miles dealer tightened u bolts and didn’t fix a thing.