Evap Box Diagram - GMC Savana Forum
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post #1 of 1 (permalink) Old 05-12-2021, 12:08 AM Thread Starter
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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.?

Attached Images
File Type: jpg Screenshot_20210505-142917.jpg (58.4 KB, 0 views)
File Type: jpg Screenshot_20210506-170855.jpg (48.5 KB, 0 views)
File Type: jpg PXL_20210505_212536730.jpg (146.5 KB, 2 views)
File Type: jpg PXL_20210505_212547658.jpg (150.4 KB, 2 views)

Last edited by YellowTruck; 05-12-2021 at 12:09 AM. Reason: pictures
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