Question about Chevrolet Silverado 1500

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Speeometer quit working on a 2003 chev silverado-suspect the power source as the speed indicator on the gps system works.

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  • belberg Mar 07, 2009

    where is the speed sensor located and how do I check it?

  • belberg Mar 07, 2009

    Very helpful as I was not sure if I should tackle the problem or not as I suspected a wire off of the sensor or something simpler.Thank you


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Go to Ebay and Search Escalade gauge cluster. You can pick up a brand new one for around $260 and most places are programming your mileage and hour meter before shipping. Add approx mileage, and you'll be good to go. It takes less than 10 minutes to install, and walah.. your done.

Posted on Mar 07, 2009

  • Sibananda Mar 07, 2009

    Here's the removal procedure for you then:

    Remove the trim bezel:

    1. Apply the parking brake to prevent the vehicle from moving.
    2. Move the shift lever all the way down to last gear.
    3. Tilt the steering wheel to the full down position.

    View Full Image

    4. Pull gently rearward on the corners of the bezel from the instrument panel (IP) assembly- it's held in place by metal clips.
    5. Remove the bezel.

    Removing the cluster:

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    1. Remove the screws that retain the I/P cluster to the I/P assembly.

    View Full Image

    2. Remove the I/P cluster (2) from the vehicle by tilting the bottom of the cluster outward.
    3. Disconnect the I/P cluster harness (1) from the I/P cluster.

    Install in reverse order.


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I don't think the GPS is connected to the speed sensor, GPS systems usually calculate speed on different way.

Check the speed sender, and the connector to the instrument panel.

Posted on Mar 07, 2009

  • Ginko
    Ginko Mar 07, 2009

    GPS calculates speed with his own resources,based on the coordinate system detection using satellite connection, and as far as I know GPS is not connected to the speed sensor, or does not extrapolate this data from the ECU (car computer).

    When the Speedo is behaving erratically it is usually the connection to the speed sensor, the speed sensor itself, or sometimes a faulty speedometer on instrument panel.

    If the speedometer only, and not other instruments, is losing power, then usually the speedometer is faulty and has a lose contact inside, as power to speedo is carried along with power to instruments by the same wiring harness.

    Before replacing the speedo , ensure that is not a problem with the speed sender, that is the most common.


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