Where is the blower control module located on a 1992 98 Oldsmobile?

The blower motor control module (also called the blower motor resistor) on a 1992 Oldsmobile Cutlass Supreme (assuming that's the model of your 98 Oldsmobile) is typically located behind the glove box. However, it could also be located under the dash near the blower motor itself. You might need to remove the glove box to access it. A repair manual specific to your vehicle year and model would be the most reliable source to confirm the location.