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You changed the control resistor and you still dont have a speed 5 on heater fan checked fuse for Fan it is good. Is there another High setting 2001 Grand Am?

Yes, there are other possible causes for your heater fan not working on high speed. Here are a few things you can check:

1. Resistor: Make sure you replaced the control resistor correctly and that the new resistor is compatible with your Grand Am.

2. Wiring: Check the wiring going to the control resistor and the heater fan motor to make sure there are no loose or damaged connections.

3. Fan motor: The heater fan motor itself could be the problem. Check for power at the fan motor and make sure the motor is not seized or damaged.

4. Climate control module: The climate control module is responsible for controlling the heater fan speed. Check the module for loose or damaged connections, and make sure the module is receiving power.