I started with my dealership. Then talked to their GM representative. Also sent an email to GM and started a file with the issue. I would leave my truck with the dealership. Drove several loaners through the 5 months. Drove the last loaner for 5-6 weeks until they bought my old truck back. Just have to be persistent, don't take no for an answer. Good Luck
Negotiated a deal with GM. I am buying a new Silverado. I understand that there are 2 different front axle assemblies. I had them check the new VIN to make sure it doesn't have the same front end as the truck I have had problems with
Same issue with my 2019. Purchased February 2019, have had noise since the first week Around 1000 miles. New drivers side axle and whole new front assembly. Still have the noise. I have been in a loaner truck for 3 plus weeks now