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wazzabie · 07-01-2023, 05:36 AM

Do you use the updated evap part gm provides?

https://downloads.innova.com/tsb-fil...00/2380966.pdf

#02-06-04-037F: DTC P0446 (Restricted/Blocked
EVAP Vent Path) Set, Check Engine Light On (Replace
Evaporative Emission (EVAP) Vent Valve Solenoid
Assembly and Add/Relocate Filter Box Using Service
Kit) - (Aug 5, 2009)

I just fixed this problem. I installed the updated evap part, a new gm fuel pump and the PO446 code was gone.

07-01-2023, 05:36 AM	#3
wazzabie Registered User Join Date: Dec 2011 Location: WA Posts: 365	Re: P0446 code?!?! 😡😡😡 Do you use the updated evap part gm provides? https://downloads.innova.com/tsb-fil...00/2380966.pdf #02-06-04-037F: DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Check Engine Light On (Replace Evaporative Emission (EVAP) Vent Valve Solenoid Assembly and Add/Relocate Filter Box Using Service Kit) - (Aug 5, 2009) I just fixed this problem. I installed the updated evap part, a new gm fuel pump and the PO446 code was gone.