Diesel Place banner
upfitter switches
1-1 of 1 Results
  1. Electrical
    Just took delivery of 2022 GMC 3500 AT4 Duramax. I ordered it with the upfitter switches without thinking about whether they are constant or ACC. I know they are typically used for lights and the like. I want to use one of them for ACC power. The question is are they all constant power or are...
1-1 of 1 Results