1997 Pontiac Grand Prix blower fan switch

150,000 MILES • 6 CYL • FWD • AUTOMATIC
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TOSOMONKEY
  • MEMBER
  • 1 POST
when you turn on the fan switch the headlights go out and the fan does not come on. Wait a few seconds and both come on. It will do this even while driving and not changing the fan speed. If heating/ cooling is off all is normal.
Nov 30, 2009 at 10:05 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Either a short in the switch or the blower motor resistor.
Dec 2, 2009 at 11:17 PM
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