Question about 1991 GMC Sonoma

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I HAVE A 1991 SPEEDOMETER AND ODOMETER DOES NOT WORK . WHAT COULD BE THE PROBLEM? DO I HAVE A CABLE OR SENSOR? ALSO MY HORN DOES NOT BLOW WHAT DO I NEED TO CHECK FOR? BOTH WERE EXISTING PROBLEMS WHEN I BOUGHT TRUCK.

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No cable. It has a vehicle speed sensor. Sounds like it is bad. Check for power at the horn with a test light when someone presses the horn pad. The horn might just be bad.

Posted on Oct 13, 2010

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Posted on Jan 02, 2017

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