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Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 23691
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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2007 SURBURBAN CEL LIGHT

Customer Question

2007 SURBURBAN CEL LIGHT
Submitted: 1 year ago.
Category: Chevy
Customer: replied 1 year ago.
HAVE BEEN TRYING TO FIX THE PO455 CODE FOR A YEAR NOW,REPLACED CANISTER,VENT SOLENOID,BOTH FROM DEALER,THEN FTP SENSOR,AFTERMARKET,AND AFTER FTP SENSOR LIGHT SEEMED TO STAY OFF FOR A WEEK,BUT THEN BACK ON ,AND NOW HAVE CODES PO172,PO175,PO455,AND PO496,NEED HELP ARE ALL THESE CODES RELATED
Expert:  Dan replied 1 year ago.

Hello, my name is***** sounds like your purge solenoid has failed which could cause all of these codes. The purge solenoid allows fuel vapor back into the engine. If purge solenoid is sticking open it will allow too much fuel vapor back into engine making it run rich which are the P0172 and P0175 codes. Replace purge solenoid, here are replacement instructions. Let me know if there is anything else I can do to help. Thanks.
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https://www.dropbox.com/s/rvt0a9va194yold/subpurge.pdf?dl=0
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Customer: replied 1 year ago.
CHANGED PURGE VALVE AND SAME CONCERN
Expert:  Dan replied 1 year ago.

Still getting all of the same codes?