WHOOOAAA!! A blower? You mean fan, right? If you got a blower on a Grand Am, you'd be a REAL sleeper. Too bad they don't make blowers for 'em, just turbos. When the lights shut off like this, does the car die? What all, in detail, shuts down when this happens. Could be something as simple as a loose battery cable. Sounds dumb, but it happens. Hope your lucky and this is the fix.