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  • avatar karjunkie 12/10/08 7:24 am PST

    This is a chronic problem with several 2003-6 Chevy models like yours.Chevy issued a recall on the 2003 and 2004 models but not the 2005\and 2006 models.The problem is with the stepper motor in the instrument cluster. The problem lies with the plastic material that holds the permanent magnet for the rotor of the stepper motor. This plastic that hold the magnet also comprises the main gear for the gear assembly that rotates the needle. Well, this plastic breaks and because of the break it bends and jams the gear which then can't rotate to the proper pulses from the computer. This gear assembly is part of the stepper motor so the whole motor has to be replaced, it is soldered in the main circuit board for the instrument cluster. The problem is so common, that replacement (Switec X25.168) motors are readily available on eBay. Here is one auction:

    http://cgi.ebay.com/ebaymotors/X25-168-
    Stepper-Motor-2008-Build-Updated-GM-GMC
    -Cluster_W0QQitemZ140274088167QQcmdZVie
    wItem


    Good luck!

Answers

  • karjunkie 12/10/08 7:24 am PST

    This is a chronic problem with several 2003-6 Chevy models like yours.Chevy issued a recall on the 2003 and 2004 models but not the 2005\and 2006 models.The problem is with the stepper motor in the instrument cluster. The problem lies with the plastic material that holds the permanent magnet for the rotor of the stepper motor. This plastic that hold the magnet also comprises the main gear for the gear assembly that rotates the needle. Well, this plastic breaks and because of the break it bends and jams the gear which then can't rotate to the proper pulses from the computer. This gear assembly is part of the stepper motor so the whole motor has to be replaced, it is soldered in the main circuit board for the instrument cluster. The problem is so common, that replacement (Switec X25.168) motors are readily available on eBay. Here is one auction:

    http://cgi.ebay.com/ebaymotors/X25-168-
    Stepper-Motor-2008-Build-Updated-GM-GMC
    -Cluster_W0QQitemZ140274088167QQcmdZVie
    wItem


    Good luck!

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