knob that controls level of heat/ac from 1-5

2003 PONTIAC MONTANA
130,015 MILES • 3.6L • 6 CYL • FWD • AUTOMATIC
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CPOACHES
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  • 1 POST
blower won t turn off stuck on the high level which is 5
Apr 6, 2015 at 7:27 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Either the blower motor relay is bad or the resister in the blower motor box has come apart and shorted to power. Check both.
Apr 7, 2015 at 5:11 AM