Evap Box Diagram
2008 GMC 3500 Savanna --
I'm throwing an EVAP code P0442 -- And it's not the gas cap. I replaced that with a new one, that actually fits on there.
I did just purchase this vehicle and whoever owned it before me didn't even have the correct gas cap on there. It just pulled off.
I also have the P1174/P1175 -- Fuel Trim imbalance, bank 2 -- I changed an O2 sensor and that kind of only made it worse.
Anywho, I'm here, and I'm only curious if someone could tell me what this hose goes to?
I take it, someone cut the hose and removed it from a one way check valve out of the evap box.?
Last edited by YellowTruck; 05-12-2021 at 12:09 AM.