so when the solenoid goes bad, those little balls in the valve body do wonky stuff like bounce around erratically. sure you could just replace the bad solenoid and depending how far, long, and hard you drove the vehicle after the light came on.. it might be a solution.
most likely you will need a replacement valve body like I did.
the shop turned around the repair in basically one day. I dropped it off at 9am; had the quote by 1:00pm; repair done the next day around 3:00pm.
good folks over at rebuildtrans.com, no bs, no upsale. They dealt with the Budbuilt skids [ budbuilt.com/Transmiss...p_526.html
] no issue and no labor upcharge.
back on the road and running great.