What causes the 2017 chevy silverado clunking noise?

Clunking noises in the Chevy Silverado are commonly associated with a failure in the suspension. Specifically, a TSB issued by Chevrolet for models of the Silverado froM2014-2018 details clunking and or squeaking sounds coming from the rear of the vehicle caused by debris collected in the leaf springs or alternatively, loose U-bolts. Another cause listed in the official TSB includes a faulty spring shackle, which requires replacement. To address loose U-bolts and d***y leaf springs, dealerships are directed to re-tighten the bolts and install new rear leaf spring inserts. To see if Your vehicle has been affected by this notice, contact a local dealer with the Silverado's VIN.