Will Brownlie

I finally switched dealerships. 2 weeks ago they opened my rear differential and said it is missing a spacer. It scheduled to be installed in 2 weeks. Hopefully this fixes the noise

I’m currently dealing with this same issue. My dealer has replaced my shackles and springs. Which did quiet the truck up for 2 weeks both times then the noise came back. So this is not a solution. I’m not convinced that this is the problem. Has anyone else shaken the back tires back-and-forth. This will replicate the sound. When I told you him they told me this was normal. So I decided to go and shake all their trucks in their yard and apparently it’s not normal because not one of there new trucks made the sound. There is a tolerance allowed on the rear axle of .066mm or .0.026 in. I’m assuming the problem will get worse with time and will have to have work done to the axle. This will be the last gm product I will buy.