Had a shop scan it and it is showing a
'open circut" in the ABS module.
Speedo was not acting up when it was scanned.

Can the ABS module itself cause the transmission
to change shift points when speedo is bouncing?

It did it last night~7pm at a stop sign, I shifted manually
from 1st and it shifted fine.
It didn't act up when air temp cooled off so
the issue is definitly temperature related.