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Heater fan

Tiny
GDADKINS
  • MEMBER
  • 1995 BUICK PARK AVENUE
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 270,000 MILES
The heater fan will occasionally turn on with ignition switch in off position running the battery dead. Sometimes the fan will keep running when the ignition switch is turned off.
Saturday, May 2nd, 2020 AT 1:50 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

The most common cause for this issue is the blower motor resistor. It shorts to power and the blower will not stop running, even with the key off.

I attached the location and procedure for you along with a wiring diagram.

Roy
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Saturday, May 2nd, 2020 AT 3:31 PM

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