My local dealer is convinced it's the old corroded resister issue at the bottom of the fan motor. I lost these functions after driving through a big rainstorm so he might be right. However, he wants like 1200 to do the job. I know the front clam has to come off, I did this job myself about 18 months ago. I'm tempted to do it again, and eliminate the fand speeds by just connecting the wires and bypassing rthe various transisters. I wish there was an easier way to access this stuff.
If all that work is done and nothing is fixed, it will mean a new SPM and a very cranky Jerry haha.