Question about 1997 GMC Safari

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97 GMC Safari speedo quit working (speedo/odometer/trip and cruz

Replaced speed sensor and still have the same problem

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  • e_sykes Apr 15, 2009

    That MNfisherman there is no cable on this van it is just a speed sensor I am going to try to chase the wires tomr but I was just hoping for a color of the wire or someone who has had this problem before

  • e_sykes Apr 15, 2009

    Traced all wires today and run up it up in the air (jack stands) pulled the dog house and pulled all connected to the vss and computer and jupered a wire from computer to Instument panel and from crus to computer and stiil the same thing. Nexted hooked up to a scaner and it will display the speed so i think it is the cluster I will replace that tomorrow and let you all know what I find. Thanks

  • e_sykes Apr 20, 2009

    No it was not the cluster any other ideas?

  • e_sykes Apr 21, 2009

    The tran shift good and all gages work except the speedo/odometer/trip and no cruz control. Replace the instrument cluster and after checking all the wiring with in reason. I will put a new ecm(computer) in on thrusday and try that. If you have any other ideas please feel free to let me know. Thanks for all your help

  • Anonymous Mar 21, 2014

    speedo gauges all over at dash



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Its your cluster

Posted on Apr 19, 2009

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If you replaced the sensor and still have same probllem. Then the problem is in the cable or display. You will have to trace all wires to see if there are any broken wires. You can use an ohmeter to test wires but not sure how you would do that while in motion. Is your check engine light on/

Posted on Apr 15, 2009

  • Nate Stansfield
    Nate Stansfield Apr 15, 2009

    I would agree it does sound like the cluster.

  • Nate Stansfield
    Nate Stansfield Apr 21, 2009

    If the trans shifts ok and the ck engine light does not come on then i
    would say the speed sensor is working and the problem is RELATED to the
    ins cluster or wiring. If the check engine light is on or the tranny shifts hard, than it is the sensor. If sensor, cluster, and wiring all turn out good, then the problem may be with the tranny signal itself. Check your fuses? If the other gauges are working, this probably still
    works. Your problem exists somewhere in between. Consider pulling out
    the gauge cluster and making sure all the connections are good? Perhaps
    part of the circuit board behind the gauge shorted out.



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