HEATING OR DEFROST PROBLEMS

  • Tiny
  • AWesson
  • 2008 GMC Envoy
  • 6 CYL
  • 2WD
  • automatic
  • 440,000 miles

Why does the heat/defrost stay on sometimes in my 2008 GMC Envoy evn though the ignition is off and the keys are out?

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Tuesday, February 1st, 2011 AT 7:20 PM

1 Reply

  • Tiny
  • rasmataz
  • Member

You have a problem between this two: HVAC control module or the blower motor control module

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Tuesday, February 1st, 2011 AT 7:35 PM

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