check engine light is on. I get a message to check gas cap.

What is your question?

I replaced the gas cap but I am still getting the same message.

Mar 24, 2012

Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 2004 Pontiac Grand Prix. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

2004 Pontiac Grand Prix auto repair 2004 Pontiac Grand Prix estimates 2004 Pontiac Grand Prix questions 2004 Pontiac Grand Prix problems 2004 Pontiac Grand Prix recalls

What is your question?

Popular Answer

check engine light is on. I get a message to check gas cap.

What is your question?

I replaced the gas cap but I am still getting the same message.

akanni in St. Louis MO

Mar 24, 2012

1 Reply

Popular Answer

milesautoon Mar 24, 2012

If the lamp has not gone out after a few days you will need to have a service shop or dealer run a diagnostic test on the fuel evaporative system. The onboard fuel emmisions system test itself for possible evaporative leaks in the fuel tank and lines. It has turned the light on because a sensor indicates the system will not hold pressure. This is not a safety issue...and emmisions issue.

Join the conversation!

Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 2004 Pontiac Grand Prix. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.