HamSilverado2020

I have the same issue with my 2020 Silverado 5.3L Custom Had it into the dealer three times for this issue My buddy is the lead mechanic at one of the dealerships so before taking it back in to the service department where i purchased it, I took him for a ride he told me they all do it - sorry $60k truck should not be making any noises - he did mention to me that the fix was to lubricate the springs First time lubricated the springs was the answer - Wrong lasted three days and clunk was worse than ever Second time they replaced both springs and tightened the ubolts- lasted one week and noise was back again - albeit not as bad as the first time Third time replaced the shackles - drove it for one week with no issues - and now its back Waiting to hear what there answer is going to be this time While in the shop they gave me a 2021 GMC as a loner - it had the same issue This obviously is a GM design flaw GM engineering needs to get involved here - i get it that a little noise is one thing, but when it sounds like the back end of my truck is falling off, that is not acceptable Keep bugging your dealership - do not take no for an answer or the response they all do this - yes they all do it because it is a design flaw This is not acceptable and extremely frustrating I have been a GM person all my life and I am losing confidence in them My 2011 Silverado to the day i traded it in for the 2020 did not make an ounce of noise from the back end,