Q. The “gas cap” light came on in the dashboard of my 2009 Mercury Milan. My local mechanic replaced the gas cap — it was very loose — and said the light would disappear after the car was driven for a ...

Picture this: you pull into your favorite gas station, the sun is shining, and you’re […] ...

What happens if my gas cap is left off? Why does it cause the check engine light to come on? Have I done some damage to the engine? These are very common questions, and luckily there’s an easy fix and ...

Dear Car Fix: Last December I bought a 2009 Pontiac G6. I have been having an ongoing problem with the "check gas cap" light coming on intermittently. I know the gas cap is on tight. I turn it four or ...

Question: I remember some time back you explained how a loose gas cap can cause a check engine light, and it was hard to understand why it wouldn’t go away after being tightened. Well, now my light is ...