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code p0446 what do i try next?


oldsvroom

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Posted

i have a 2001 silverado 5.3 that keeps coding p0446 i have replaced the vent solinoid system and the vent valve but it keeps coming back after i clear it what now?

Posted

i gave up and made an appiontment to take it in lets see what the ( experts ) say.

Posted

Canister is probably full of gravel dust

 

 

yup ,always replace both and relocate the filta !!!

 

i like GMs factory relocation to on top of the tranny-----F__A__I__L____!!!!!!!

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