[cathyc]

Daughter has 1996 Grand Am, 4 cyl. Low mileage (2x,xxx).
Just had both CHECK ENGINE and ETS OFF lights go on. The button does not allow ETS to be turned back on.
Had Auto Zone and PEP Boys read code: both read P0440--said tighten cap. We tightened the gas cap, both lights came back on. We tried a new cap. Both lights came back on.

I see posts to go elsewhere for a better read of codes -- holiday weekend so we are stuck with all shops closed for 3 days.

Any more ideas? Thank you!