Interesting. I'd be curious to see what the speed sensor data per wheel looks like normal and when this happens. With my scanner, I could just log a drive and capture the data.

Intermittent problems will be very hard to track down without that. I'll post the diagrams when I can though.

Easydiag 2.0 is what I use for diagnostics like this. I think I paid $70? It's well worth it