Do you smoke in the car? In my case, the previous owner did.

My guess is that the brushes and commutator need to be cleaned. When my blower motor stopped working, I was able to spin the blades and it started to work again as well. But since I had the blower out, I cleaned the brushes and commutator with alcohol and lubed the bearings on either end of the shaft. Brushes were a little worn but I didn't replace them. Contact cleaner would have been better but I did not have any on hand.

With hindsight, my non working blower motor was causing a short whenever I tried to turn the climate control on. The ABS light would turn on. Battery checked out ok. OVP was good too. I was going the check the ABS sensors next. But I finally realized that whenever I turned the climate control on the ABS light would turn on shortly after. Now everything is working perfectly.

Hope this helps others on this board.