engine code p440 will not turn off

What is your question?

engine light on , fogged from both ends, charcoal cannister replaced celenoids cleaned and still p440

Oct 12, 2013

Popular Answer

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2002 GMC Envoy. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

2002 GMC Envoy auto repair 2002 GMC Envoy estimates 2002 GMC Envoy questions 2002 GMC Envoy problems 2002 GMC Envoy recalls

What is your question?

Popular Answer

engine code p440 will not turn off

What is your question?

engine light on , fogged from both ends, charcoal cannister replaced celenoids cleaned and still p440

25centcdn in Ojibwa WI

Oct 12, 2013

1 Reply

Popular Answer

ProfessorGon Oct 12, 2013

Run evap test; Check for change in fuel tank pressure sensor. If no change and no leaks, possible bad sensor in fuel pump module.

Join the conversation!

Popular Answer

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2002 GMC Envoy. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.