John, did you read this yet?
http://www.vanagain.com/troubleshoot-your-radiator-fan/

When you turn in your AC your low speed fan should come on.  I am thinking
the fan low speed isn't working (bad resistor) and the mid speed is what
you think is the low speed.  Do the tests i my write up and let us know
what you find.

Ken

On Tue, Jul 19, 2016 at 10:34 AM, John Rodgers <jrodgers113@gmail.com>
wrote:

> Finally got my Carat out of the shop, but there are problems. Low speed fan
> comes on as it should but the other two speeds don't work. Also, when the
> AC is turned on, with the ignition on, but not in the start position. The
> high speed fan should come on. But it does not.
>
> The fan switch has been replaced with new, but no joy for fan operation.
>
> Suggestions?
>
> Thanks,
>
> John
>

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com