Where is the blower resistor on a 2003 olds alero located?

The blower resistor on a 2003 Oldsmobile Alero is typically located behind the glove box. To access it, you'll likely need to remove the glove box itself. There's no single universally agreed upon location, so some slight variations may exist based on trim level, but the area behind the glove box is the most common place for it in this model year.