Question about 2003 GMC Envoy

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HVAC Blower Motor

I have a Climate Control type HVAC system in my 2003 Envoy. The AC and Heater and all the vents switch from floor to front to defrost as expected. The driver and passenger side temperature control knobs work normal also. It is just that the blower runs irratically, at different speeds on auto and the manual speed control light indicators go up and down in the display panel, but does not control the motor speed. I suspect it might be the Blower Motor Control Module. Is that a good deduction? And if it is, where is the Module located. If it is something else, please advise me. Thanks

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Do you have the manual.

Posted on Oct 07, 2008

  • 3 more comments 
  • mastermind10 Oct 07, 2008

    On the firewall to the right (when facing the firewall) of the blower motor

  • mastermind10 Oct 07, 2008

    If will be mounted right near the blower motor itself.... attached to the blower motor via a cable.... held in place in it's mounting by 2 screws.

  • mastermind10 Oct 07, 2008

    Blower motor assembly consists of the motor and impeller. It can provide the airflow when HVAC is turned on. In general, it locates in instrument pannel.

  • mastermind10 Oct 07, 2008

    should be on left side on firewall only 4 bolt 1 plugin if you buy used check size @ if it works

  • mastermind10 Oct 07, 2008

    rate the solution if excepted.and feel free for further queries.

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