2002 Cadillac Seville sts heater blower motor location?

The blower motor in a 2002 Cadillac Seville STS is located behind the glove box (dashboard). To access it, you'll need to remove the glove box. This involves removing screws and possibly some clips holding it in place. Consult a repair manual specific to your vehicle year and model for detailed instructions and diagrams. There are many online resources and repair manuals available that will walk you through the process step-by-step with pictures.