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Q: Blower motor goes off and on at will on 1994 GMC Safari

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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.
(2) Answers
check main fuse box in engine compartment make sure all fuses are tight,,,fuses are not snug tight pat down with hand
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