Question about 2003 Chevrolet Impala

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Air conditioner won't work unless you have it on 5 setting

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  • Master
  • 6,784 Answers

HI. The actual resistor switch at the control cluster will be the culprit, in your case. This particular circuit has become unstable. It will not be able o manipulate the current in this state.

Simply replacing the resistor switch will correct this problem. I would by an aftermarket switch, if possible.

Posted on May 15, 2010

  • 2 more comments 
  • rappmd_63 May 15, 2010

    how do I replace the fan blower resistor

  • rappmd_63 May 15, 2010

    where is the control cluster located

  • Michael Masters
    Michael Masters May 15, 2010

    One moment while i put together a guide for you....

  • Michael Masters
    Michael Masters May 15, 2010

    OK, The heater & A/C controls are in the center of the instrument panel, above the audio system. You will only need to replace the heater/AC controller. It is one whole piece, unfortunately. Follow the instructions below:



    A Disconnect the negative battery cable.

    B Remove the instrument cluster trim plate, as follows:

    1. Remove the retaining screws from the instrument panel accessory trim plate.

    2. Pull the instrument panel accessory trim plate rearward to release the retainers.

    3. Rotate the trim panel rearward and up to release the tabs at the top edge.




    C Remove the retaining screws from the heater & A/C control panels. Pull the control panel forward and unsnap the retainers at the ends. Detach the electrical connector(s) from the back of the panel. Some models may have a vacuum line connection that must also be removed.

    D Installation is the reverse of the removal process. Use care to make sure the retaining clips are properly seated and all screws are in place. This helps avoid rattles and squeaks later.


    I recommend purchasing the blower resistor switch kit for your car from an auto parts dealer, if possible.

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Air conditioner won't work


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