Funny story during COVID GM could not ship trucks built here locally due to chip shortages. So they got the great idea to park thousands of trucks in rented fields. They now use a soybean based wire coating in new vehicles, this was a dinner bell to field mice causing all kinds of wiring damage to tons of these trucks. Basically don’t buy a 2020-2023 Sierra or Silverado because you will drive yourself crazy with wiring gremlins.