[The Other Harry]

but selling a car with an unknown problem when you're honest is an incredibly stressful proposition. If I knew what was causing that light--but I don't.

I'm warning you. It will almost certainly cost more to make that light go off than you will ever get for the Buick.

[tacticalogic]

I'm warning you. It will almost certainly cost more to make that light go off than you will ever get for the Buick.

I've always found drilling a hole in them to be quite economical. Use a really small bit.