New owner operator looking for decent place to call home.

There should be a label on one of your ac components next time you got the hood up. Or somewhere under the hood.

1234 is the new thing out. Some car manufacturers started using as early as 15 models. Supposedly the start date was January 1 2017. For all vehicles. Don't know what trucks are using for what years. Other then 14 and older would most likely be 134 and 17 and newer would be 1234.