Is it necessary to reset ECM?

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2004-2007 Cadillac CTS-V Performance Mods Discussion, Is it necessary to reset ECM? in Cadillac CTS-V Series Forum - 2004 - 2007; The odometer shows error, but the display everything works normally. Should I reset ECM? Where should I start looking?...
  1. #1
    Chandler12 is offline Cadillac Owners Member
    Automobile(s): xts 2000
    Join Date
    Jul 2012

    Is it necessary to reset ECM?

    The odometer shows error, but the display everything works normally. Should I reset ECM? Where should I start looking?

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  3. #2
    darkman's Avatar
    darkman is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V
    Join Date
    Nov 2005
    Spring, Texas

    Re: Is it necessary to reset ECM?

    According to the Service Manual


    The instrument panel cluster (IPC) displays the vehicle mileage and trip mileage as determined by the engine control module (ECM). The IPC calculates the vehicle mileage based on the speed pulses from the vehicle speed sensor (VSS) signal and calculating the mileage for odometer displays. The odometer will display Error if an internal IPC memory failure is detected and DTC B1009 is set.

    See attached.

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