What would cause the heater fan to stop working on my 2001 olds intrique g l s.?

The heater fan in your 2001 Oldsmobile Intrigue GLS may stop working due to several reasons, including a blown fuse, a faulty blower motor, or a malfunctioning blower motor resistor. Additionally, issues with the climate control switch or wiring connections could also be the culprit. It's advisable to check the fuse first before investigating the other components for any signs of failure.