Question about 2002 GMC Envoy

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Heater on 2002 gmc envoy does not turn on until you reach the setting 4 and then if you do that car dies, was told this is caused by resistance???

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  • GMC Master
  • 14,036 Answers

SOUND PROBLEM IN THE BLOWER RESISTOR.

Posted on May 16, 2010

  • smma78
    smma78 May 16, 2010

    thank you :)

  • Jonah Oneal May 16, 2010

    A BAD RESISTOR WILL CAUSE SPEED CONTROL PROBLEMS BUT HAVE VECHICLE SCANNED BECAUSE A FAULT IN HVAC CONTROL MODULE COULD CAUSE PROBLEM ITS ALSO CONTROLLED BY THE PCM.A SCANNER WILL PINPOINT PROBLEM TO KEEP FROM SPENDING TOO MUCH MONEY.

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  • Master
  • 432 Answers

Blower motor resister,but shouldn't kill the car.It is mounted under the dash on the passinger side next to the blower motor.All is incased in a plastic cover.You should only have to remove the front screws to get to it.Well good luck and hope this helps.

Posted on May 16, 2010

  • smma78
    smma78 May 16, 2010

    thank you :)

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1 Answer

2002 envoy heater dial only works on the #4


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1 Answer

2002 GMC Envoy


Sounds like the blower motor resister to me this piece controls the speeds of the blower motor it should be close to the blower motor on the passenger side it should have wires going to the blower motor very easy to replace.

Jan 08, 2009 | 2002 GMC Envoy

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