[C6] Check Engine Light

[Lou G]

Three weeks ago I was on the road and saw the "Check Engine Light" on and a message on the dic "Check Gas Cap". I stopped, opened the gas cap, reset the message and went on but the check engine light stayed on.

Took the car to a Chevy dealer and was told that in fact it was the gas cap. Charged me $70 or so dollars and I was on my way.

Yesterday, the check engine light came on again, but no dic message.
I made an appoinment to bring the car in on Wednesday to see what's going on. By coincidence, both times, I have been low on fuel. I wonder if something more than the gas cap is creating a problem.

Anyone had this problem or heard anything about it?

Lou