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ac/heat blower motor not working

A little more info would be nice. I'd check power to the switch. Also if it's a 90s truck the connection at the fan can get too hot and warp the connectors and make a no fan situation.
 
ak diesel driver said:
A little more info would be nice. I'd check power to the switch. Also if it's a 90s truck the connection at the fan can get too hot and warp the connectors and make a no fan situation.
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This^^^^. Do a search for posts on this subject.

As the blower wears with age, it develops resistance. It will melt the connections at the harness plug. I simple crimped together the wires with heat shrink butt connectors. Been great ever since.
 
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