Speedometer Problems

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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Speedometer Problems in Cadillac Escalade Forums; I have an old (2003) Escalade ESV For probably 3 months, the speedometer registers higher than the actual speed. At ...
  1. #1
    Jagdad is offline Cadillac Owners Member
    Automobile(s): 2003 Escalade ESV
    Join Date
    Jun 2012

    Speedometer Problems

    I have an old (2003) Escalade ESV
    For probably 3 months, the speedometer registers higher than the actual speed. At first it was only a little. then gradually got worse. At highway speeds now, the speedometer pegs over 120MPH.
    For the experts, a couple of questions:
    1. Is this speedometer strictly electronic and the signal to the dash from a computer somewhere else.
    2. If it is, there must be a sending unit somewhere
    3. Can I check anything to determine whether which part is bad, ie., sending unit or dash unit?
    4. If it is the dash, can I use a junkyard replacement or is it locked some way to prevent mileage tampering?

    Thanks in advance for any help

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  3. #2
    flyingdutchman is offline Cadillac Owners Fanatic
    Join Date
    Oct 2004

    Re: Speedometer Problems

    Search for stepper motor click link


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