chevyltz3500

I just purchased 4 new aluminum wheels. The tech at the chevrolet dealer used a grinder to clean the rotors to make them clean and flat again. the Rotors had been installed 4 days earlier, There is transfer from the aluminum wheel to the rotors.

I have a 2018 k3500LTZ with aluminum factory wheels. 18 inch tires. The lug nuts loosen up after a tire rotation and I am have retorque the nuts about every 100 miles. They are torqued to 140 ft lbs. The Chevrolet dealer says they have 11 K3500's doing this. They do not have a fix. The have recommended getting new wheels. All the trucks that are having an issue have the same factory polished aluminum wheel. GM part number 84397983. I am wondering if any one else is having this issue ? I have 3 duramax trucks, 2009, 2018 and a 2022. The 2018 is the only one with a problem so far. Can anyone recommend an aftermarket 18 inch wheel ?