2010 Chevy express 3500 No front or rear heat or air
Neither front or rear blower motor ac or heat is working on my parent's 2010 chevy express 3500 van. When we set it so that it blows outside air, neither the heat or air works in the front or rear, and neither blower is running. Dad checked the fuses, but isn't sure he knows where they all are. Since nothing is working, we have nothing to diagnose. Any ideas?