Hey all, so I had my 2020 Denali HD for a year when I heard noise in the undercarriage. Took it to the dealer, they told me my leaf springs were popping and they did not know why. They replaced them under warranty and I had no noise for about a year. Recently I took the truck back in because the noise was back, they told me the shackles on the axel hadn’t been torqued. They replaced the shackles but the truck was still making noise. If anything it’s worse since they replaced the shackles. The dealer has passed the problem onto GM who currently has no solution for the problem. They told me I was not the only one with the issue and it was a problem with the HD models. Is there anyone out there that is having this problem? Have you been told anything different or have more information? My 80k truck should not sound like it’s falling apart!!!!!!
