blower motor only works on highest setting?

Hello,

It sounds like you could have a faulty blower motor resistor. That's why it is blowing only in one setting.
The blower motor resistor is located on the lower passenger side dash (see diagram below).
It is a very straightforward replacement process.

Here is a helpful article:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

I have attached the diagrams for the blower motor as well as the resistor.

Please let me know of any questions.

Thank you.