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1997 Pontiac Grand Prix Heater only works on High

Tiny
TAGILMARTIN
  • MEMBER
  • 1997 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I just replaced the blower and just before if replaced it the heater fan only worked on high and after I replaced the blower it still only works on high. The blower was broken but now is working. I checked and changed the fuses but it still does not work. What can I look at next.
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Friday, January 15th, 2010 AT 11:12 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, my first thought is the blower resistor. High speed doesn't use a resistor. Any fuses you check, use a testlite on the fuse circuit, make sure there is voltage on the fuse circuit.
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Friday, January 15th, 2010 AT 12:05 PM

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