check the fuse box under the hood it should be a 40 or 60 amp large yellow fuse, it will not be a fuse in the car under the dash, also check the owners manual it will have a diagram of exactly which fuse is for the Blower,
The blower is controlled by the blower switch, blower resistor, and relevant power relay.
A blower resistor can be replaced, in your 2002 Oldsmobile, by removing the resistor wiring. Remove the retaining screws. Reverse the process to install the new resistor.
A bad heater blower motor resistor would effect one or more blower speeds other than high.
If the blower only works on high the blower resistor is most likely the problem and should be replaced. On rare occasions if the car has blown the resistor more than once the blower motor shouuld be replaced.
heater blower resistor has to be replaced. you have to remove glove boxthe resistor is to the right of the heater blower moter
There is really no method to "check" the resistor, text by substitution.
blower motor resistor needs to be replaced
It is probably the resistor. I had the same problem with my 99 Cougar. It is located on the passenger side under dash. Check with Ford. I think that this part was recalled.
the heater blower resistor is located on the passenger side footwell near the firewall. a complete how-to replace the resistor, along with photos is available on newcougar.org http://www.newcougar.org/forums/how-tos/3732-fixing-heater-blower-resistor-install-photos.html
replace the blower motor switch
The front blower resistor on a 98 Dodge Caravan is replaced by removing the cover and disconnecting the wiring harness. The resistor can then be pulled and a new one put in its place.
Remove the glove box. The front blower motor and the resistor can be accessed from there.