2002 Gmc Sierra Hvac Fan Speed Control Switch Works Only On High 5 Rotary Type

195,000 MILES
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The HVAC fan speed control switch works only on high. It is a 5 speed fan and a rotary type.
What could be the problem?
Jan 17, 2013 at 12:23 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Burnt out blower resistor located in air plenum just left of blower
Jan 17, 2013 at 12:38 PM
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