NHTSA Complaint #11523738 — 2018 GMC YUKON XL

The engine started making a ticking sound a few days after thanksgiving. I made an appointment with the dealership but they couldn’t take it in for 3 weeks. The day before my appointment I was driving on the highway and the lifter broke which caused the camshaft and a few other parts to break causing sudden lose of power and severe shaking. The parts for the repair were back ordered and it took about 5 weeks to get my vehicle back. About 7 weeks later I started the car in the driveway and it again had lose of power and severe shaking. The parts that were replaced in January failed and ruined the whole engine. There is a 6 month back order on this engine. It has been sitting at the dealership for almost 2 months already. Both incidents I believe had the potential to cause an accident if I were driving with cars close behind me.