Chris Christensen

Thank you sir, but seems like there should be an actual GM fix. Drove an '09 Sierra 2500HD for over 10 years and never had the problem. Maybe it's just the 1500's?

2021 Silverado 1500 RST diesel w/ less than 7k miles. I get a dull, irregular clunking noise when going over bumps or rough road at low speed ie. maneuvering in a parking lot. My son had a similar issue that his dealer corrected, in his words, by "replacing plastic leaf spring bushings with rubber bushings". My dealer has no TSB reference or replacement part numbers that would apply. They replaced bushings and retorqued leaf springs but that did not correct the problem. Has anyone dealt with a similar problem?