the blower motor will be working, then stop. Or I might turn on the engine to find it isn't working. It may not work for days, or just minutes. Doesn't seem to matter if the switch is on or off when I start the engine. It was replaced about 2 years ago and always sounded awful. I always wondered if they really installed a new one. Couldn't go back to that mechanic to check it out, the shop closed.
Blower motor goes off and on at will on 1994 GMC Safari
by maurso in Sandston, VA on July 14, 2010
ANSWER by mastertech6371 , July 14, 2010
replace the motor and the cage assembly. Roy
ANSWER by Visitor , October 19, 2010
check main fuse box in engine compartment make sure all fuses are tight,,,fuses are not snug tight pat down with hand