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Dan, Technician
Category: Chevy
Satisfied Customers: 23761
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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2004 chevy express cutaway, 10000lb gvw box truck stumbles

Customer Question

2004 chevy express cutaway, 10000lb gvw box truck stumbles after filling gas tank only. Sets no codes
Submitted: 1 year ago.
Category: Chevy
Expert:  Dan replied 1 year ago.

Hello, my name is***** most likely means the purge valve is leaking allowing excessive fuel vapor to enter the engine after filling. You can completely disconnect the purge valve and block off the hoses. If this allows it to run better then replace. Here are replacement instructions, let me know if you have more questions. thanks.