Cadillac Repair: 1998 cadillac deville blower motor problems, cadillac deville, wire terminal

Question
like many other people, my blower motor works when it want to. got power down to it,changing settings, fan speeds, nothing seems to work, all winter car was fine, now spring and its not operating again, ive checked everything,any help would sure be appriciated, thanks, tom

Answer
Check the RED wire (terminal C) at the blower motor for battery voltage. Check the black wire (terminal A) for a ground.

If you have battery voltage in 80% of most cases the fault is the blower motor itself has failed and in 20 % the fault is the AC/Heater programmer (ACM).